Ballastless track universal template system and construction method thereof
阅读说明:本技术 无砟轨道通用模板系统及其施工方法 (Ballastless track universal template system and construction method thereof ) 是由 杨星智 吴应明 仲维玲 任高峰 郭朋超 王平安 王建斌 周笔剑 郭尚坤 林峰 于 2020-08-18 设计创作,主要内容包括:本发明公开一种无砟轨道通用模板系统,涉及铁路无砟轨道施工设备技术领域,该系统包括:多个纵向模板;多个底座板横向模板,底座板横向模板的纵截面为直角梯形;多个道床板横向模板,道床板横向模板包括横向模板本体、左边板与右边板,左边板与右边板均活动连接于横向模板本体的前侧壁的两端;以及横向模板间定位装置。本发明还公开了一种采用无砟轨道通用模板系统的施工方法。该无砟轨道通用模板系统旨在解决现有技术中模具通用性较差的技术问题。(The invention discloses a ballastless track universal template system, which relates to the technical field of railway ballastless track construction equipment, and comprises the following components: a plurality of longitudinal formworks; the base plate transverse formworks have right trapezoid longitudinal sections; the track bed plate transverse formworks comprise transverse formwork bodies, left side plates and right side plates, and the left side plates and the right side plates are movably connected to two ends of the front side wall of each transverse formwork body; and a positioning device between the transverse formworks. The invention also discloses a construction method adopting the ballastless track universal template system. The ballastless track universal template system aims at solving the technical problem of poor mold universality in the prior art.)
1. The utility model provides a ballastless track universal formwork system which characterized in that includes:
a plurality of longitudinal formworks;
the base plate transverse formworks are of right-angled trapezoids in longitudinal sections;
the transverse formwork comprises a transverse formwork body, a left side plate and a right side plate, wherein the left side plate and the right side plate are movably connected to two ends of the front side wall of the transverse formwork body; and
a positioning device between the transverse formworks;
wherein at least 2 longitudinal formworks and at least 2 base plate transverse formworks can enclose to form a base plate mold structure, and two opposite base plate transverse formworks of the adjacent base plate mold structure are connected through the transverse formwork inter-plate positioning device; at least 2 longitudinal formworks and at least 2 horizontal formworks of the ballast bed slab can enclose into a ballast bed slab die structure, and two opposite horizontal formworks of the ballast bed slab die structure which are adjacent are connected through a positioning device between the horizontal formworks.
2. The ballastless track universal template system of claim 1, further comprising:
the first reinforcing pipe is fixedly arranged at the bottom of the outer side wall of the base plate transverse formwork; and
the first back rib plates are arranged on the outer side wall of the horizontal formwork of the base plate at intervals along the length direction of the horizontal formwork of the base plate.
3. The ballastless track universal formwork system of claim 2, wherein the plurality of back rib plates comprise a left back rib plate and a right back rib plate at two ends, and the left back rib plate and the right back rib plate are both angle steels;
and one outer side wall of each of the left back rib plate and the right back rib plate is coplanar with two end faces of the base plate in the length direction.
4. The ballastless track universal template system of claim 1, further comprising a retaining member located on one side of the left and right side plates;
and the left side plate and the right side plate are both constructed as rectangular plates having kidney-shaped holes arranged in the width direction of the rectangular plates;
positioning pieces are fixedly arranged at two ends of the front side wall along the length direction of the transverse formwork body, and the positioning pieces are movably arranged in the waist-shaped holes;
the positioning piece penetrates through the waist-shaped hole and is detachably connected to the locking piece so as to press the left side plate or the right side plate on the front side wall.
5. The ballastless track universal template system of claim 2, wherein the track bed slab transverse template further comprises:
the second reinforcing pipe is fixedly arranged at the bottom of the outer side wall of the transverse formwork body;
the positioning device between the transverse formworks comprises:
the positioning fixture comprises two parallel template positioning grooves, and is provided with adjusting holes penetrating through the positioning fixture along the depth direction of the template positioning grooves and positioned between the two template positioning grooves;
the height adjusting screw is in threaded connection with the adjusting hole and comprises a positioning end positioned on the side of the template positioning groove of the positioning fixture; and
the frustum is fixedly arranged at the positioning end;
the frustum is matched with the first reinforcing pipes of the two opposite base plate transverse formworks; or
The frustum is matched with the second reinforcing pipes of the two opposite transverse formworks of the ballast bed plate.
6. The ballastless track universal template system of claim 5, wherein the transverse inter-template positioning device further comprises:
the sleeve is fixedly arranged at one end, back to the template positioning groove, of the heightening screw rod, and the axis of the sleeve is perpendicular to that of the heightening screw rod; and
the crowbar is sleeved in the sleeve.
7. The ballastless track universal template system of claim 1, further comprising a longitudinal template support structure, wherein the longitudinal template support structure comprises:
the first inner end of the first outer supporting rod is hinged to the upper part of the outer side wall of the longitudinal formwork;
the second inner end of the second outer support rod is hinged to the lower part of the outer side wall of the longitudinal formwork; and
the triangular seat is fixedly connected with the ground, the second outer end of the first outer supporting rod and the second outer end of the second outer supporting rod are hinged to the triangular seat, and the first outer end and a first hinge axis of the triangular seat are collinear with the second outer end and a second hinge axis of the triangular seat.
8. A construction method using the ballastless track universal formwork system of any one of claims 1 to 7, characterized in that the method comprises the following steps:
axially lofting a bed plate sideline of the ballastless track line, and then performing transverse formwork installation position line snapping;
installing longitudinal templates, moving at least 2 base plate transverse templates into the slab joints, installing a transverse template positioning device, respectively inserting the adjacent base plate transverse templates into two template positioning grooves of the transverse template positioning device, and rotating the heightening screw to enable the frustum to be inserted between first reinforcing pipes of the adjacent base plate transverse templates;
rotating the heightening screw to enable the frustum to prop open the lower parts of the adjacent base plate transverse formworks so that the adjacent base plate transverse formworks are aligned to corresponding transverse formwork installation positions elastic lines respectively;
fastening the longitudinal template and the base plate transverse template to construct a base plate mold structure;
pouring concrete to form a base plate;
at least 2 transverse formworks of the ballast bed plate are moved into the slab joints of the base plate, and longitudinal formworks are installed;
lifting the transverse formworks of the ballast bed plate to a preset height higher than the longitudinal formworks, and then installing a transverse formwork positioning device, so that the adjacent transverse formworks of the ballast bed plate are respectively inserted into two formwork positioning grooves of the transverse formwork positioning device;
rotating the height-adjusting screw rod to enable the frustum to tightly support the lower part of the transverse formwork of the track bed plate;
fastening a longitudinal template and the transverse template of the ballast bed plate to construct a ballast bed plate mold structure;
and pouring concrete to form the ballast bed plate.
9. The construction method according to claim 8, wherein before the step of installing the longitudinal formworks, the method further comprises:
planting ribs at the elastic line positions of the installation positions of the transverse templates in the base plate unit structure; and
after the step of rotating the height-adjusting screw to make the frustum prop open the lower parts of the adjacent base plate transverse formworks so that the adjacent base plate transverse formworks are respectively aligned with the elastic lines of the corresponding transverse formwork installation positions, the method further comprises the following steps:
correcting the verticality of the transverse template of the base plate, and adding a concrete protective layer cushion block between the transverse template of the base plate and the embedded steel bars after the verticality meets the requirement;
and the distance between the embedded bars and the elastic lines at the mounting positions of the transverse formworks is smaller than the thickness of the concrete protective layer cushion block.
10. The method of claim 8, wherein the step of casting concrete to form a foundation slab is preceded by the step of casting concrete to form a ballast bed slab, and the method further comprises:
the slab joints are covered by the thick geotextile, round holes are formed in the corresponding positions of the heightening screws on the thick geotextile, and then the thick geotextile and the bed plate transverse formwork or the bed plate transverse formwork are clamped tightly by the fishtail clamps.
Technical Field
The invention relates to the technical field of railway ballastless track construction equipment, in particular to a universal template system for ballastless track construction and a construction method thereof.
Background
The ballastless track is a common high-speed railway track structure type at present, is widely applied to a plurality of high-speed railways or passenger dedicated lines, and is generally provided with a unit plate type ballastless track at a bridge section, a short-circuit foundation or a pile plate structure section, a tunnel portal section or a settlement joint in order to reduce the problems of bridge creep, subgrade settlement, tunnel inverted arch uplift and the like. In the construction process of a ballastless track bed plate in China, a simple bed plate mold and a bed plate mold are respectively designed into different structural forms aiming at the construction section characteristics of a roadbed and a bridge bed plate, the different structural forms are required to be adopted for a straight line section and a curve section, and the mold universality is poor.
Disclosure of Invention
The invention mainly aims to provide a ballastless track universal template system and a construction method thereof, and aims to solve the technical problem of poor mold universality in the prior art.
In order to achieve the above object, the present invention provides a ballastless track general template system, which includes:
a plurality of longitudinal formworks;
the base plate transverse formworks are of right-angled trapezoids in longitudinal sections;
the transverse formwork comprises a transverse formwork body, a left side plate and a right side plate, wherein the left side plate and the right side plate are movably connected to two ends of the front side wall of the transverse formwork body; and
a positioning device between the transverse formworks;
wherein at least 2 longitudinal formworks and at least 2 base plate transverse formworks can enclose to form a base plate mold structure, and two opposite base plate transverse formworks of the adjacent base plate mold structure are connected through the transverse formwork inter-plate positioning device; at least 2 longitudinal formworks and at least 2 horizontal formworks of the ballast bed slab can enclose into a ballast bed slab die structure, and two opposite horizontal formworks of the ballast bed slab die structure which are adjacent are connected through a positioning device between the horizontal formworks.
Optionally, the method further includes:
the first reinforcing pipe is fixedly arranged at the bottom of the outer side wall of the base plate transverse formwork; and
the first back rib plates are arranged on the outer side wall of the horizontal formwork of the base plate at intervals along the length direction of the horizontal formwork of the base plate.
Optionally, the plurality of first back rib plates include a left back rib plate and a right back rib plate at two ends, and the left back rib plate and the right back rib plate are both angle steels;
and one outer side wall of each of the left back rib plate and the right back rib plate is coplanar with two end faces of the base plate in the length direction.
Optionally, the locking device is arranged on one side of the left side plate and one side of the right side plate;
and the left side plate and the right side plate are both constructed as rectangular plates having kidney-shaped holes arranged in the width direction of the rectangular plates;
positioning pieces are fixedly arranged at two ends of the front side wall along the length direction of the transverse formwork body, and the positioning pieces are movably arranged in the waist-shaped holes;
the positioning piece penetrates through the waist-shaped hole and is detachably connected to the locking piece so as to press the left side plate or the right side plate on the front side wall.
Optionally, the horizontal template of railway roadbed still includes:
the second reinforcing pipe is fixedly arranged at the bottom of the outer side wall of the transverse formwork body;
the positioning device between the transverse formworks comprises:
the positioning fixture comprises two parallel template positioning grooves, and is provided with adjusting holes penetrating through the positioning fixture along the depth direction of the template positioning grooves and positioned between the two template positioning grooves;
the height adjusting screw is in threaded connection with the adjusting hole and comprises a positioning end positioned on the side of the template positioning groove of the positioning fixture; and
the frustum is fixedly arranged at the positioning end;
the frustum is matched with the first reinforcing pipes of the two opposite base plate transverse formworks; or
The frustum is matched with the second reinforcing pipes of the two opposite transverse formworks of the ballast bed plate.
Optionally, the positioning device between the transverse formworks further includes:
the sleeve is fixedly arranged at one end, back to the template positioning groove, of the heightening screw rod, and the axis of the sleeve is perpendicular to that of the heightening screw rod; and
the crowbar is sleeved in the sleeve.
Still include vertical template bearing structure, wherein vertical template bearing structure includes:
the first inner end of the first outer stay bar is hinged to the upper part of the outer side wall of the longitudinal formwork;
the second inner end of the second outer support is hinged to the lower part of the outer side wall of the longitudinal template; and
the triangular seat is fixedly connected with the ground, the second outer end of the first outer supporting rod and the second outer end of the second outer supporting rod are hinged to the triangular seat, and the first hinge axis of the first outer end and the first hinge axis of the triangular seat are collinear with the second hinge axis of the second outer end and the second hinge axis of the triangular seat.
In a second aspect, the invention further provides a construction method using the ballastless track general template system, and the method includes the following steps:
axially lofting a bed plate sideline of the ballastless track line, and then performing transverse formwork installation position line snapping;
installing longitudinal templates, moving at least 2 base plate transverse templates into the slab joints, installing a transverse template positioning device, respectively inserting the adjacent base plate transverse templates into two template positioning grooves of the transverse template positioning device, and rotating the heightening screw to enable the frustum to be inserted between reinforcing pipes of the adjacent base plate transverse templates;
rotating the heightening screw to enable the frustum to prop open the lower parts of the adjacent base plate transverse formworks so that the adjacent base plate transverse formworks are aligned to corresponding transverse formwork installation positions elastic lines respectively;
fastening the longitudinal template and the base plate transverse template to construct a base plate mold structure;
pouring concrete to form a base plate;
at least 2 transverse formworks of the ballast bed plate are moved into the slab joints of the base plate, and longitudinal formworks are installed;
lifting the transverse formworks of the ballast bed plate to a preset height higher than the longitudinal formworks, and then installing a transverse formwork positioning device, so that the adjacent transverse formworks of the ballast bed plate are respectively inserted into two formwork positioning grooves of the transverse formwork positioning device;
rotating the height-adjusting screw rod to enable the frustum to tightly support the lower part of the transverse formwork of the track bed plate;
fastening a longitudinal template and the transverse template of the ballast bed plate to construct a ballast bed plate mold structure;
and pouring concrete to form the ballast bed plate.
Optionally, before the step of installing the longitudinal formwork, the method further includes:
planting ribs at the elastic line positions of the installation positions of the transverse templates in the base plate unit structure; and
after the step of rotating the height-adjusting screw to make the frustum prop open the lower parts of the adjacent base plate transverse formworks so that the adjacent base plate transverse formworks are respectively aligned with the elastic lines of the corresponding transverse formwork installation positions, the method further comprises the following steps:
correcting the verticality of the transverse template of the base plate, and adding a concrete protective layer cushion block between the transverse template of the base plate and the embedded steel bars after the verticality meets the requirement;
and the distance between the embedded bars and the elastic lines at the mounting positions of the transverse formworks is smaller than the thickness of the concrete protective layer cushion block.
Optionally, before the step of pouring concrete to form the bed plate and the step of pouring concrete to form the ballast bed plate, the method further includes:
the slab joints are covered by the thick geotextile, round holes are formed in the corresponding positions of the heightening screws on the thick geotextile, and then the thick geotextile and the bed plate transverse formwork or the bed plate transverse formwork are clamped tightly by the fishtail clamps.
In the general template system for the ballastless track provided by the embodiment of the invention, the longitudinal section of the transverse template of the bed plate is in a right-angled trapezoid shape, so that the universal template system can be used for casting concrete on a straight section of the ballastless track and can also be used for casting concrete on a curved section.
And the horizontal template of railway roadbed board includes swing joint's left board and right board, thereby both ends face and the longitudinal form board that can replace horizontal template body through swing joint's the left board and the right board cooperate, thereby can adjust the interval between two longitudinal form boards and the angle of longitudinal form board and bed plate, thereby make the horizontal template of railway roadbed board can enclose the railway roadbed board mould structure of synthesizing different longitudinal section shapes with longitudinal form board, for example, rectangle railway roadbed board mould structure, or parallelogram's railway roadbed board template structure, thereby be general in the railway roadbed board construction of ballastless track's straightway and curve section.
The construction method provided by the invention adopts the ballastless track general template system, and has the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a base plate of a ballastless track universal template system according to an embodiment of the invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural diagram of a track bed slab of the ballastless track general template system according to an embodiment of the invention;
FIG. 4 is a left side view of FIG. 3;
fig. 5 is a schematic structural diagram of a left side plate (right side plate) of the ballastless track universal template system according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a positioning device between transverse formworks in an embodiment of the ballastless track general formwork system of the invention;
FIG. 7 is a schematic view of one end of a base plate mold structure of the ballastless track universal template system embodiment of the invention;
fig. 8 is a schematic installation diagram of a positioning device between transverse formworks of an embodiment of the ballastless track universal formwork system of the invention on a bed plate mold structure;
fig. 9 is a schematic view of one end of a track bed slab mold structure of an embodiment of the ballastless track universal template system of the invention;
fig. 10 is an enlarged view at B of fig. 9;
fig. 11 is a schematic view of an installation of a positioning device between transverse formworks on a track bed slab mold structure according to an embodiment of the ballastless track universal formwork system of the invention;
fig. 12 is a schematic installation diagram of a longitudinal formwork support structure supporting a longitudinal formwork of a track bed slab mold structure according to an embodiment of the ballastless track universal formwork system of the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The ballastless track is a common high-speed railway track structure at present, is widely applied to a plurality of high-speed railways or passenger dedicated lines, and is generally provided with a unit plate type ballastless track at a bridge section, a short-circuit foundation or a pile plate structure section, a tunnel portal section or a settlement joint in order to reduce the problems of bridge creep, subgrade settlement, tunnel inverted arch uplift and the like. In the construction process of a ballastless track bed plate in China, a simple bed plate mold and a bed plate mold are respectively designed into different structural forms aiming at the construction section characteristics of a roadbed and a bridge bed plate, the different structural forms are required to be adopted for a straight line section and a curve section, and the mold universality is poor.
In order to solve the technical problems, the invention provides a ballastless track general template system and a construction method thereof. And the horizontal template of railway roadbed board includes swing joint's left board and right board, thereby both ends face and the longitudinal form board that can replace horizontal template body through swing joint's the left board and the right board cooperate, thereby can adjust the interval between two longitudinal form boards and the angle of longitudinal form board and bed plate, thereby make the horizontal template of railway roadbed board can enclose the railway roadbed board mould structure of synthesizing different longitudinal section shapes with longitudinal form board, for example, rectangle railway roadbed board mould structure, or parallelogram's railway roadbed board template structure, thereby be general in the railway roadbed board construction of ballastless track's straightway and curve section.
The inventive concepts of the present application are further described below in conjunction with the following figures and the detailed description.
Referring to fig. 1 to 5, in an embodiment of the present invention, a ballastless track general template system includes:
a plurality of
the base plate
a plurality of
a transverse
wherein at least 2
The
Specifically, the longitudinal section of the base plate
It is easy to understand that, the existing ballastless track construction process uses various types of transverse formworks, and different formworks are needed to be used in a straight section and a curved section to construct different base plates. In the embodiment, the base plate mold formed by the base plate in the shape of the right trapezoid and the
Wherein, the preceding lateral wall of
Specifically, the track
Wherein the transverse inter-bed plate positioning means 40 are used for connecting two opposite bed plate
In some embodiments, the ballastless track universal formwork system further includes a
Wherein the first reinforcing
Specifically, the
Alternatively, the
Meanwhile, in order to improve the structural strength of the
Alternatively, the first
As an option of this embodiment, referring to fig. 1, the length of the
Optionally, in an embodiment, the plurality of first
Wherein, an outer side wall of the left back rib plate and the right back rib plate is coplanar with two end faces of the base plate
Specifically, the left back rib plate and the right back rib plate may be made of angle steel, in this case, the left back rib plate and the right back rib plate are disposed opposite to each other, that is, one outer sidewall of the angle steel is welded to the front sidewall of the
It is worth mentioning that the left back rib plate and the right back rib plate can also adopt other structural forms such as channel steel, I-steel, and the application is not limited to this.
In addition, the outer side walls of the left back rib plate and the right back rib plate are respectively coplanar with two end surfaces of the base plate
In one embodiment, referring to fig. 3 and 4, the
Referring to fig. 5, the left and
The two ends of the front side wall along the length direction of the
Wherein the
The positioning
The positioning
As can be easily understood, after the
In this embodiment, the waist-shaped hole penetrates through the rectangular plate, so that the positioning
It is worth mentioning that, referring to fig. 3 and 4, the track slab
Meanwhile, in order to improve the structural strength of the track slab
Optionally, the second
As an alternative to this embodiment, referring to fig. 3 and 4, the
In one embodiment, referring to fig. 6-11, the lateral
the bottom wall of the positioning fixture comprises two parallel template positioning grooves A, the positioning fixture is provided with adjusting holes penetrating through the positioning fixture along the depth direction of the template positioning grooves A, and the adjusting holes are located between the two template positioning grooves A.
Heightening
the
The positioning clamps can be arranged at the upper parts of two adjacent transverse templates, and the upper ends of the two transverse templates are clamped into the template positioning grooves A, so that the upper parts of the transverse templates can be positioned. The positioning fixture can be arranged horizontally, at the moment, the adjusting holes of the positioning fixture are arranged in the vertical direction, and the adjusting holes are located between the two template positioning grooves A. I.e. the elevation screws 43 are arranged in the vertical direction and between adjacent transverse formworks. The end of the heightening
The
Specifically, referring to fig. 6, in a direction from the adjustment end to the positioning end, i.e., in a vertically downward direction, the outer side wall of the
It should be noted that the transverse formwork of the present embodiment may be a
This embodiment connects and secures the upper ends of adjacent transverse formworks by means of locating fixtures. The height-adjusting
Referring to fig. 6, in order to facilitate the rotation of the height-adjusting
and the
the crowbar is sleeved in the
Wherein the
It is easily understood that the present embodiment rotates the height-adjusting
Referring to fig. 6, in one embodiment, the positioning fixture includes:
the
the
Wherein, the clearance between the two side walls of the
Specifically, the
It is easy to understand, two fixed plates are directly welded in the existing
In one embodiment, in order to clamp the upper end of the transverse template in the template positioning groove a, a locking structure is further arranged on the positioning fixture, and the locking structure comprises:
and the threaded hole is formed in the outer side wall of one side of the
And the adjusting
And the adjusting
Wherein the optional threaded hole may be arranged in a direction perpendicular to the axis of the heightening bolt. For example, when the height-adjusting bolt is vertically arranged, the threaded hole is horizontally arranged.
In this embodiment, still can stretch into adjusting
The traditional longitudinal formwork on one side is supported by a single outer support rod, so that the unstable supporting condition is easy to occur, or the traditional longitudinal formwork on one side is supported by a plurality of outer support rods, the outer support rods are respectively fixed on facilities of ballastless tracks such as a base, and the problems of large quantity of parts and complicated reinforcing process exist at the moment. To this end, and referring to fig. 12, in one embodiment, a longitudinal form support structure is further included, wherein the longitudinal form support structure includes:
a first
the second inner end of the second outer support rod 8 is hinged to the lower part of the outer side wall of the
the triangular seat 9, the triangular seat 9 and ground fixed connection, and the second outer end of first
Wherein, the triangle seat 9 can be formed by many steel sheet welding, and the hinge hole has been seted up to the level on the triangle seat 9, inserts an articulated shaft on the hinge hole, and the both ends of articulated shaft are located to first outer end and the second outer end cover respectively. Still can vertically set up one on the trigonometry and plant the muscle hole, conveniently through planting muscle earth anchor with trigonometry 9 fixed connection to the base face to with ground fixed connection, reduce the base face and destroy. It is easy to understand that the aforementioned triangle seat 9 can be fixedly connected to the ground, such that the triangle seat 9 is connected to the base surface, or the triangle seat 9 is connected to the protective wall on the bridge floor and the cable duct wall of the tunnel ditch.
Compared with the existing
The ballastless track is a common high-speed railway track structure type at present, is widely applied to a plurality of high-speed railways or passenger dedicated lines, and is generally provided with a unit plate type ballastless track at a bridge section, a short-circuit foundation or a pile plate structure section, a tunnel portal section or a settlement joint in order to reduce the problems of bridge creep, subgrade settlement, tunnel inverted arch uplift and the like. However, no matter which plate structure is adopted, the base plate cast-in-place process and the cast-in-place slab process are omitted, and independent broken joints are arranged between unit plates by utilizing transverse formworks. The number of transverse broken joints of a ballastless track line is large, and the following problems are easily caused due to low level of transverse template positioning and reinforcing technology: 1) the transverse formwork is not firmly reinforced, and the phenomena of concrete bottom slurry leakage, and overlarge or undersize plate seams are caused by formwork running and displacement. 2) The template is not positioned strictly in the positioning stage, and the phenomenon of template inclination occurs. 3) The end or top overhanging ear portions of the transverse forms are welded to the
With reference to fig. 7 to fig. 11, for this purpose, an embodiment of the present invention further provides a construction method using a ballastless track general template system, where the method includes the following steps:
(a) axial lofting is conducted on a base plate sideline of a ballastless track line, then lengths of structures such as a roadbed and a bridge and beam joint sizes are measured actually, plate lengths of the transverse
(b) After the base surface contacted by the base plate is roughened and the reinforcing mesh is installed, the reinforcing bars are planted on the elastic line side of the
(c) Installing the
It will be readily appreciated that the
It is worth mentioning that, referring to fig. 12, the
It is easy to understand that, compared with the existing longitudinal formwork supported by a single outer brace or a plurality of outer braces which support the longitudinal formwork up and down, in this embodiment, since the outer ends of the first outer brace and the second outer brace are hinged together, the
(d) Rotating the raising screws 43 causes the
(e) Meanwhile, the vertical level ruler is utilized to correct the verticality of the base plate
Wherein, the clear distance between the embedded bar 1 and the elastic line of the template mounting position is smaller than the thickness of the concrete protective layer cushion block.
(f) The skid is used for rotating the adjusting
(g) For preventing to reveal among the concrete placement process or pollute the slab joint, use thick type geotechnological cloth to cover the slab joint to the round hole is seted up to the
Specifically, the hole formed in the thick geotextile at the position corresponding to the height-adjusting
(h) And pouring concrete to form the
(i) After the base plate is installed and the back track panel is installed, 2 track bed board transverse
It will be readily appreciated that the longitudinal form may still be supported by the aforementioned longitudinal form support structure and will not be described in detail herein.
(j) The track bed plate
It will be readily appreciated that in other embodiments, the track bed slab
(k) The raising
(l) Then, the track bed plate
(m) for preventing concrete placement in-process from revealing or polluting the board seam, use thick type geotechnological cloth to cover the board seam to the round hole is seted up to the
And (n) pouring concrete to form the track bed slab.
Since the construction method adopts all technical solutions of all the system embodiments, all the beneficial effects brought by the technical solutions of the embodiments are at least achieved, and are not repeated herein.
In addition, according to the construction method provided by the invention, the concrete protective layer cushion block is added to the embedded steel bars at the bottom of the base plate
According to the construction method provided by the invention, the C-shaped
The construction method provided by the invention can be used for increasing the
According to the construction method provided by the invention, the thick geotextile is provided with the round holes or the holes such as the U-shaped holes, on one hand, the geotextile is light in weight, and more isolation layer leftovers can be used for practicality, the cost is low, and on the other hand, the situations that the shield of plate seams is not tight, the geotextile is difficult to install or the geotextile is easy to scrape off in windy weather are avoided.
According to the construction method provided by the invention, the
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
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