阅读说明：本技术 三连体筒仓滑模施工方法 (Three-connected silo slip form construction method ) 是由 冯诚 张永昌 娄战士 于 2020-06-29 设计创作，主要内容包括：本申请涉及一种三连体筒仓滑模施工方法,属于建筑施工技术领域。本申请提出一种三连体筒仓滑模施工方法,包括以下步骤：将提升门架安装于基础段筒壁处；将环形的操作平台安装于所述提升门架；将千斤顶安装于所述提升门架的横梁；将支承杆穿过所述千斤顶和所述提升门架,并抵接于基础段筒壁的顶端；将竖向钢筋定位装置安装于提升门架的横梁之上；将水平钢筋和竖向钢筋绑扎为一体；将钢模板支设于提升门架的下侧,并布置于待浇注筒壁的内外两侧；千斤顶爬升带动提升门架相对于支承杆向上滑升。该三连体筒仓滑模施工方法将操作平台布置为环形,能够减少平台用钢梁,减轻滑模施工系统的自重,加快施工进度,保障施工安全,降低施工成本。(The application relates to a slip-form construction method for a three-connected silo, and belongs to the technical field of building construction. The application provides a three-connected silo slip-form construction method which comprises the following steps: installing a lifting door frame at the cylinder wall of the basic section; mounting an annular operating platform to the lift gantry; mounting a jack to a cross beam of the lifting gantry; a supporting rod penetrates through the jack and the lifting door frame and abuts against the top end of the wall of the foundation section; mounting a vertical steel bar positioning device on a cross beam of the lifting portal frame; binding the horizontal steel bars and the vertical steel bars into a whole; erecting a steel template at the lower side of a lifting portal and arranging the steel template at the inner side and the outer side of the cylinder wall to be poured; the jack climbs to drive the lifting portal to slide upwards relative to the supporting rod. According to the three-connected-silo slip-form construction method, the operation platform is arranged in an annular shape, steel beams for the platform can be reduced, the self weight of a slip-form construction system is reduced, the construction progress is accelerated, the construction safety is guaranteed, and the construction cost is reduced.)

1. A three-connected silo slip-form construction method is characterized by comprising the following steps:

installing a lifting door frame at the wall of the basic section of the silo;

mounting an annular operating platform to the lift gantry;

mounting a jack to a cross beam of the lifting gantry;

a supporting rod penetrates through the jack and the lifting door frame and abuts against the top end of the wall of the base section;

mounting a vertical steel bar positioning device on a cross beam of the lifting portal frame;

binding the horizontal steel bars and the vertical steel bars into a whole;

erecting a steel template at the lower side of a lifting portal and arranging the steel template at the inner side and the outer side of the cylinder wall to be poured;

the jack climbs to drive the lifting portal to slide upwards relative to the supporting rod.

2. The triple-connected silo slip-form construction method according to claim 1, wherein the lifting gantry comprises two upright columns and a cross beam, the two upright columns are respectively installed at two ends of the cross beam, and the jack is installed on the cross beam.

3. The triple-connected silo slip-form construction method according to claim 2, characterized in that the cross beam is 0.4-0.6m higher than the operating platform.

4. The triple-connected silo slip-form construction method according to claim 2, characterized in that the operating platform comprises an inner ring platform and an outer ring platform, the inner ring platform is mounted on the upright column at the inner side of the lifting gantry, and the outer ring platform is mounted on the upright column at the outer side of the lifting gantry.

5. The three-connected silo slip-form construction method according to claim 1, characterized in that the vertical steel bar positioning device comprises a plurality of semicircular steel rings which are arranged on the horizontal annular steel bars at intervals.

6. The triple-connected silo slip-form construction method according to claim 5, characterized in that the radius of the semicircular steel ring is 2-3 times of the vertical steel bar where it is positioned.

7. The three-connected silo slip-form construction method according to claim 1, characterized in that the top of the steel formwork is closely attached to the edge of the operation platform.

8. The three-connected silo slip-form construction method according to claim 1, characterized in that a circular ring is coaxially arranged inside the silo, a plurality of radial tie bars are arranged on the circular ring, and the other end of each radial tie bar is connected with the lifting portal to control the radius size of the slip-form construction process.

9. The three-connected silo slip-form construction method according to claim 1, characterized in that when steel bars are bound, thin lead wires are used for tightening the junctions of the vertical steel bars and the horizontal steel bars.

10. The triple silo slip-form construction method according to claim 1, wherein the step of driving the lifting gantry to slide upwards relative to the support rod by climbing the jack comprises the steps of:

the jack climbs to drive the lifting portal to slide upwards by a unit height;

checking the demolding strength of the concrete molded by casting in the previous link;

checking a spool, elevation and radius of the sliding mode platform system;

pouring concrete into the pouring space;

binding the horizontal steel bars and the vertical steel bars into a whole;

the upper end of the original supporting rod is connected with a long supporting rod;

and when the strength of the poured concrete after curing meets the requirements of sliding and demoulding, the jack climbs to drive the lifting portal to slide upwards for one unit height again.

Technical Field

The application relates to the technical field of building construction, in particular to a slip-form construction method for a three-connected silo.

Background

The slip-form construction is a construction method for using a hydraulic lifting device to lift a template in a sliding way to pour a vertical concrete structure.

The slip form construction speed is high, and the slip form construction method is not only frequently adopted in civil buildings, high-rise buildings, hydraulic dam engineering and traffic pier engineering, but also used for industrial building silo, chimney, granulation tower construction and other engineering. In industrial building engineering, a hydraulic jack is often used as a lifting device to realize slip form construction; in the water conservancy dam facing project, a winch is often adopted as traction force to carry out slip form construction.

However, the existing slip form construction method is high in cost, low in assembling and disassembling speed and poor in safety guarantee.

Disclosure of Invention

Therefore, the three-connected silo slip-form construction method can reduce steel beams for platforms, reduce the dead weight of a slip-form construction system, accelerate the assembly and disassembly of the platform system, improve the construction progress, guarantee the construction safety and reduce the construction cost.

The embodiment of the application provides a slip-form construction method for a three-connected silo, which comprises the following steps: installing a lifting door frame at the cylinder wall of the basic section; mounting an annular operating platform to the lift gantry; mounting a jack to a cross beam of the lifting gantry; a supporting rod penetrates through the jack and the lifting door frame and abuts against the top end of the wall of the foundation section; mounting a vertical steel bar positioning device on a cross beam of the lifting portal frame; binding the horizontal steel bars and the vertical steel bars into a whole; erecting a steel template at the lower side of a lifting portal and arranging the steel template at the inner side and the outer side of the cylinder wall to be poured; the jack climbs to drive the lifting portal to slide upwards relative to the supporting rod.

According to the slip-form construction method of the three-connected silo, the operation platform is arranged in an annular shape, steel beams for the platform can be reduced, the dead weight of a slip-form construction system is reduced, the assembly and disassembly of the platform are accelerated, the construction progress is improved, the construction safety is guaranteed, and the construction cost is reduced.

In addition, the three-connected silo slip-form construction method according to the embodiment of the application also has the following additional technical characteristics:

according to some embodiments of the application, the lifting mast comprises two uprights mounted respectively at the two ends of the cross beam and a cross beam on which the jack is mounted. For traditional "open" font portal, the promotion portal simple structure in this application embodiment, intensity satisfies the requirement, has still reduced the dead weight of promoting the portal, installs and removes convenient and fast.

According to some embodiments of the application, the crossbeam is higher than the operation platform by 0.4-0.6m to provide an operation space for operators to bind steel bars, so that the operation safety of the operators is improved, and the construction efficiency is also improved.

According to some embodiments of the application, the operation platform comprises an inner ring platform mounted to the column on the inner side of the lifting gantry and an outer ring platform mounted to the column on the outer side of the lifting gantry. This kind of arrangement form can reduce the girder steel for the platform, alleviates slipform construction system's dead weight, installs and removes convenient and fast more for the construction progress, guarantee construction safety reduces construction cost.

According to some embodiments of the application, vertical steel bar positioning device includes a plurality of semicircle steel rings, a plurality of semicircle steel ring intervals set up on horizontal annular reinforcing bar to the interval value of location vertical reinforcing bar can also guarantee the thickness of reinforcing bar protective layer simultaneously.

According to some embodiments of the application, the semi-circular steel ring has a radius 2-3 times larger than the vertical rebar it is positioned. The arrangement form can save consumables and has better positioning accuracy.

According to some embodiments of the application, the top of the steel form is snug against the edge of the work platform to prevent concrete from leaking out.

According to some embodiments of the application, a ring is coaxially arranged inside the silo, a plurality of radial tie bars are arranged on the ring, and the other end of each radial tie bar is connected with the lifting portal frame to control the radius size of the slip form construction process and the silo radius size of the slip form construction process.

According to some embodiments of the application, when the reinforcing steel bars are bound, the intersections of the vertical reinforcing steel bars and the horizontal reinforcing steel bars are fastened by using thin lead wires. The tightening method is simple and effective, and the construction efficiency is higher.

According to some embodiments of the present application, the jack climbing bringing the lifting mast up-slide relative to the support bar comprises the steps of: the jack climbs to drive the lifting portal to slide upwards by a unit height; checking the demolding strength of the concrete molded by casting in the previous link; checking a spool, elevation and radius of the sliding mode platform system; pouring concrete into the pouring space; binding the horizontal steel bars and the vertical steel bars into a whole; the upper end of the original supporting rod is connected with a long supporting rod; and when the strength of the poured concrete after curing meets the requirement of the demolding strength, the jack climbs to drive the lifting portal to slide upwards for one unit height again.

By the method, multiple sliding lifts can be carried out, so that the pouring operation of the three-connected silo is realized.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a slipform construction apparatus provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a lifting gantry in the sliding mode setting device provided in the embodiment of the present application (a connection part between an operation platform and the lifting gantry);

fig. 3 is a schematic structural view of a lifting gantry in the sliding mode setting device provided in the embodiment of the present application (where an operation platform is not connected to the lifting gantry);

fig. 4 is a schematic structural diagram of a radius control device in a sliding mode forming device according to an embodiment of the present application;

fig. 5 is a schematic structural view of a vertical steel bar positioning device in the sliding form applying device according to the embodiment of the present application;

fig. 6 is a schematic position diagram of reinforcing steel bars of a triple silo applied to the slip-form construction method of the triple silo according to the embodiment of the present application;

fig. 7 is a schematic plan view of a triplex silo to which the slipform construction apparatus according to the embodiment of the present application is applied.

Icon: 100-slip form construction system; 10-lifting the gantry; 11-a first upright; 12-a second upright; 13-a cross beam; 14-a first diagonal brace; 15-a second diagonal support; 20-a jack; 30-a support bar; 40-a steel template; 41-supporting the outer steel template; 42-supporting the inner steel template; 43-a casting space; 44-steel form top; 45-lower horizontal support enclosure; 46-upper horizontal support enclosure; 47-concrete poured in the pouring space; 50-an operating platform; 51-an inner ring platform; 52-outer ring platform; 53-platform upper edge; 54-an operating space; 55-a fence; 60-radius control means; 61-circular ring; 62-radial lacing wire; 70-vertical steel bar positioning device; 71-semicircular steel rings; 72-inner circle semi-circle steel bar positioning steel ring; 73-outer ring semi-circular steel bar positioning steel ring; 200-three connected silos; 210-a first silo; 211-a first cartridge wall; 2111-outside of first cartridge wall; 2112-inside of first cartridge wall; 220-a second silo; 230-a third silo; 300-reinforcing steel bars; 310-vertical rebars; 320-horizontal steel bars; 330-positioning horizontal steel bars; 331-outside positioning horizontal bars; 332-positioning horizontal bars inside.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electric welding connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 7, in the description of the present application, a triple silo 200 refers to three silos, i.e., a first silo 210, a second silo 220, and a third silo 230, which are adjacently disposed.

The three-connected silo slip-form construction method in the embodiment of the application is used for pouring construction operation of the three-connected silo 200. In other embodiments, the three-connected silo slip-form construction method can be applied to the pouring construction operation of a single silo, and can also be applied to the pouring construction operation of a multi-connected silo larger than three connected.

Referring to fig. 1 and 2, the three-connected silo slip-form construction method according to the embodiment of the present application includes the following steps:

installing the lifting portal 10 at the base section cylinder wall;

mounting the annular operating platform 50 to the lifting mast 10;

referring to fig. 2 and 3, the jack 20 is mounted to the beam 13 of the lifting mast 10;

the supporting rod 30 passes through the jack 20 and the lifting portal frame 10 and abuts against the top end of the wall of the foundation section;

installing a vertical reinforcement positioning device 70 (please refer to fig. 5) on the beam 13 of the lifting gantry 10;

referring to fig. 6, the horizontal steel bars 320 and the vertical steel bars 310 are bound into a whole;

erecting a steel template 40 at the lower side of the lifting portal 10, and arranging the steel template at the inner side and the outer side of the cylinder wall to be poured;

the jacks 20 climb up to bring the lifting mast 10 to slide upwards with respect to the support bars 30.

In the description of the present application, "foundation section wall" refers to the wall of an already cast silo section; the "cylinder wall to be poured" refers to a cylinder wall to be poured on the upper side of the "cylinder wall of the foundation section", i.e., concrete 47 poured in a pouring space described below.

Compared with the existing three-connected silo slip-form construction method, the three-connected silo slip-form construction method in the embodiment of the application arranges the operation platform 50 in an annular shape, can reduce steel beams for the platform, reduces the dead weight of a slip-form construction system, is convenient and quick to assemble and disassemble, accelerates the construction progress, ensures the construction safety and reduces the construction cost.

Referring to fig. 1, 2, 4 and 5, for convenience of description, a slip form construction system 100 is provided in an embodiment of the present application, which includes lifting a plurality of lifting gantries 10, jacks 20, support rods 30, a steel form 40, an operating platform 50, a radius control device 60 and a vertical rebar positioning device 70.

Referring to fig. 7, a plurality of lifting gantries 10 are disposed on a first wall 211 of a first silo 210, a second wall (not shown) of a second silo 220, and a third wall (not shown) of a third silo 230.

Referring to fig. 3, taking an example of a lifting gantry 10 disposed on a first cylinder wall 211, the lifting gantry 10 includes a first upright 11, a second upright 12 and a cross beam 13, the cross beam 13 spans the first cylinder wall 211, and the first upright 11 and the second upright 12 are respectively supported at two ends of the cross beam 13 to form a portal frame.

Wherein the first post 11 is disposed on the first cylinder wall exterior side 2111 and the second post 12 is disposed on the first cylinder wall interior side 2112.

The operator platform 50 includes an inner ring platform 51 and an outer ring platform 52, the inner ring platform 51 being disposed on the first cylinder wall inner side 2112 and mounted to the second column 12, and the outer ring platform 52 being disposed on the first cylinder wall outer side 2111 and mounted to the first column 11.

Referring to fig. 1, the inner ring platform 51 is mounted to the second column 12 by screws, and the outer ring platform 52 is mounted to the first column 11 by screws.

Referring to fig. 2, where the lifting gantry 10 is not disposed, the ends of the inner ring platform 51 and the outer ring platform 52 of the operating platform 50 are more than two columns and are adjacent to the steel form 40.

In the conventional slip-form construction system, the operation platform 50 is installed on the entire inner surface of the first silo 210, and a drum needs to be installed in the middle. The operation platform 50 in the embodiment of the application is annular, steel beams for the platform can be reduced, the dead weight of the slip form construction system is reduced, the assembly and disassembly are convenient and fast, the construction progress is accelerated, the construction safety is guaranteed, and the construction cost is reduced.

In some embodiments of the present application, an operator may perform reinforcement lashing operations on the inner and outer annular platforms 51, 52.

Optionally, a first diagonal support 14 is arranged between the first column 11 and the outer ring platform 52, and a second diagonal support 15 is arranged between the second column 12 and the inner ring platform 51, so as to increase the strength of the operation platform 50.

Referring to fig. 1, optionally, a batten plate is laid on the operation platform 50, and the end portions of the inner ring platform 51 and the outer ring platform 52 are provided with a fence 55 to increase the safety of the operation platform 50.

Further, the operation platform 50 has a platform upper edge 53, the cross beam 13 is higher than the platform upper edge 53 by 0.4-0.6m, and an operation space 54 is formed for an operator to perform reinforcement binding operation.

Preferably, the cross beam 13 is 0.6m higher than the upper edge 53 of the platform, which is both suitable for operation and makes reasonable use of space.

In the conventional slip form construction system, a hanger is generally disposed below the operation platform 50, and an operator performs a reinforcement work in the hanger. The operation space 54 in the embodiment of the present application is located on the operation platform 50, which can improve the operation safety and the construction efficiency.

Optionally, the steel form top 44 is snug against the platform upper edge 53 to prevent concrete from leaking out.

As an example, the gap between the steel form top 44 and the platform upper edge 53 has a value Δ 1-2 cm.

In some embodiments of the present application, the lifting gantry 10 is provided with a jack 20, and the jack 20 is mounted in a central position of the beam 13 for moving the lifting gantry 10 upward.

The supporting rod 30 is installed on the jack 20, the bottom end of the supporting rod 30 abuts against the top end of the wall of the foundation section, and the jack 20 moves upward in a climbing manner relative to the supporting rod 30 to drive the operation platform 50 and the steel form 40 to slide upward.

The steel form 40 includes a supporting outer steel form 41 and a supporting inner steel form 42. The supporting inner steel formwork 42 is mounted on the second upright 12, the supporting outer steel formwork 41 is mounted on the first upright 11, and the supporting outer steel formwork 41 and the supporting inner steel formwork 42 are oppositely arranged to form a casting space 43. The supporting outer steel form 41 and the supporting inner steel form 42 are mounted to the lifting mast 10 by means of two sets of upper and lower horizontal supporting enclosures, respectively a lower horizontal supporting enclosure 45 and an upper horizontal supporting enclosure 46.

Referring to fig. 4, the radius control device 60 is used for controlling the radius value of the triple silo 200 constructed by the sliding formwork construction system 100.

Referring to fig. 4, taking the first silo 210 as an example, the radius control device 60 includes a circular ring 61 and a plurality of radial tie bars 62, the circular ring 61 is located inside the first silo 210 and is coaxially arranged with the first silo 210, one end of the radial tie bar 62 is connected to the circular ring 61, and the other end is connected to the second column 12 of the lifting gantry 10.

Through the arrangement form, the radius size of the slip form construction process can be controlled.

Referring to fig. 5, the vertical reinforcing bar positioning device 70 is used for positioning the spacing and the position of the vertical reinforcing bars 310.

Referring to fig. 6, in the description of the present application, the reinforcing bars 300 include a plurality of vertical reinforcing bars 310, a plurality of horizontal reinforcing bars 320, and a positioning horizontal reinforcing bar 330. Wherein, the positioning horizontal reinforcing steel bars 330 are provided with vertical reinforcing steel bar positioning devices 70 for positioning a plurality of vertical reinforcing steel bars 310.

Referring to fig. 5, in some embodiments of the present application, the vertical reinforcing bar positioning device 70 includes a plurality of semicircular steel rings 71, the semicircular steel rings 71 are spaced apart from each other on the positioning horizontal reinforcing bars 330, and one semicircular steel ring 71 is used for positioning one vertical reinforcing bar 310. Wherein, the plurality of semicircular steel rings 71 comprise a plurality of inner ring semicircular steel bar positioning steel rings 72 and a plurality of outer ring semicircular steel bar positioning steel rings 73. A plurality of inner circle semicircle reinforcing steel bar location steel ring 72 arrange in inboard location horizontal reinforcement 332, and a plurality of outer lane semicircle reinforcing steel bar location steel ring 73 arrange in outside location horizontal reinforcement 331, and inner circle semicircle reinforcing steel bar location steel ring 72 and a plurality of outer lane semicircle reinforcing steel bar location steel ring 73 set up relatively.

As an example form, the radius D of the semicircular steel ring 71 is 2-3 times the radius D of the vertical rebar 310 it is positioned, i.e. D is 2-3D.

It will be readily appreciated that the plurality of vertical rebars 310 and the plurality of horizontal rebars 320 are criss-crossed and cast into concrete to position the rebars to control the rebar tying quality. The positioning horizontal steel bar 330 is located at the upper end of the cross beam 13 of the lifting portal 10, the positioning horizontal steel bar 330 slides up along with the lifting portal 10, and the vertical steel bar of the casting operation of the next link is positioned.

Wherein, the distance between the inner positioning horizontal steel bar 332 and the supporting inner steel template 42 is L₁The space between the outer positioning horizontal steel bar 331 and the supporting outer steel form 41 is L₂The arrangement can ensure the thickness of the protective layer in the pouring process.

The concrete steps of the three-connected silo slip-form construction method according to the embodiment of the present application are described below with reference to the slip-form construction system 100.

S1: and assembling the sliding mode platform.

And (3) constructing a foundation with the positive and negative values below zero: completing the project below the positive and negative zero reference surface of the three-connected silo 200;

backfilling earthwork: backfilling earthwork of the project below the positive and negative zero reference surfaces;

paying off and erecting a scaffold: arranging the spud, setting up a scaffold to prepare for installing the lifting gantry 10 and the operation platform 50;

installing the lifting door frame 10: disposing a first post 11 on a first cylinder wall exterior side 2111 and a second post 12 on a first cylinder wall interior side 2112;

installing the jack 20: mounting the jack 20 to the beam 13;

installing the supporting rod 30, and enabling the supporting rod 30 to pass through the jack 20 and the cross beam 13 and abut against the top end of the barrel wall of the foundation section:

mounting the vertical reinforcement positioning device 70 on the cross beam 13;

binding steel bars: tightening the junction of the vertical steel bar 310 and the horizontal steel bar 320 by using a thin lead wire;

erecting a steel template: installing the supporting outer steel formwork 41 on the first upright post 11, and installing the supporting inner steel formwork 42 on the second vertical beam 12;

checking and accepting: checking whether the positions of the lifting portal frame 10, the jack 20, the supporting rod 30, the steel template 40, the operating platform 50, the radius control device 60 and the vertical steel bar positioning device 70 meet the requirements or not;

and (3) initial slip test: the sliding of the lifting mast 10 is tried and the lifting mast 10 is brought by the jacks 20 to slide upwards with respect to the support bars 30.

S2: and (5) sliding mode lifting operation.

Slipform lifting S2 is performed after slipform platform assembly S1, and the specific steps of slipform lifting S2 are described below.

The jack 20 climbs to drive the lifting portal frame 10 to slide upwards by a unit height;

checking the demolding strength of the concrete molded by casting in the previous link, wherein the demolding strength is 0.2-0.4 MPa:

checking a bobbin, an elevation and a radius: drawing a red paint mark on the axis of the operation platform 50 and the silo, arranging fixed observation points outside the periphery of the construction building, periodically detecting the observation points on the extension line of the axis by using a theodolite, and if the slip form construction system deviates to cause that the straightness of the silo exceeds the standard, performing slip form deviation adjustment and increasing the detection times until the axes are overlapped;

pouring concrete, namely pouring concrete into the pouring space 43;

binding steel bars: binding the staggered vertical steel bars 310 and the horizontal steel bars 320;

extension support rod 30: on the basis of the original supporting rod 30, a section of supporting rod 30 is connected upwards for the next sliding;

when the strength of the poured concrete after curing meets the sliding lifting requirement, the jack 20 drives the lifting portal frame 10 to slide upwards for one unit height again.

According to the slip-form construction method for the three-connected silo in the embodiment of the application, the operation platform 50 is annular, the lifting portal frame 10 is provided with the cross beam 13, the operation space 54 is located on the operation platform 50, and the vertical steel bar positioning step is also adopted, so that steel beams for the platform can be reduced, the self weight of the slip-form platform is reduced, the assembly and disassembly are convenient and fast, the construction progress is accelerated, the construction safety is guaranteed, the construction cost is reduced, and the safety of the construction process is improved.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.