阅读说明：本技术 一种明挖法轨道交通车站工程预制装配式结构及施工方法 (Open cut method rail transit station engineering prefabricated assembly type structure and construction method ) 是由 贾永刚 程雯 于 2021-01-12 设计创作，主要内容包括：本发明公开一种明挖法轨道交通车站工程预制装配式结构及施工方法,底、顶板预制件两端通过与侧墙预制件连接,底、顶板预制件的两端均分别设置有第一榫接头,侧墙预制件的两端分别设置有第二榫接头,第一榫接头与第二榫接头插接配合预应力后张法预应力索(钢筋)构成预应力凹凸榫注浆接头结构。效果：采用整体无柱型式,释放轨道交通车站工程的建筑空间,设备用房布置灵活,乘客空间体验优越；底、顶板预制件采用纵向空腔结构,可铺设市政管线等设备管线、也可作通风空调风管使用,降低设备管线对地下空间占用,空腔满足日常后期运营维护要求；满足装配式接头刚度及传力要求；中板预制件为预制整体装配型式,轨顶风道预制件为卡槽式装配连接。(The invention discloses a prefabricated assembly type structure of an open cut method rail transit station project and a construction method. The effect is as follows: the integral column-free type is adopted, the building space of the rail transit station engineering is released, the equipment room is flexibly arranged, and the passenger space experience is superior; the bottom plate prefabricated member and the top plate prefabricated member adopt a longitudinal cavity structure, can be used for laying municipal pipelines and other equipment pipelines and can also be used as ventilation air-conditioning air pipes, the occupation of the equipment pipelines on underground space is reduced, and the cavity meets the requirement of daily later-stage operation and maintenance; the rigidity and force transmission requirements of the assembly type joint are met; the medium plate prefabricated part is a prefabricated integral assembly type, and the rail top air duct prefabricated part is in clamping groove type assembly connection.)

1. The utility model provides a prefabricated assembled structure of open cut method track traffic station engineering, a serial communication port, including bottom plate prefab (1), roof prefab (5) and side wall prefab (3), bottom plate prefab (1) interval sets up under roof prefab (5), bottom plate prefab (1) with the both ends of roof prefab (5) are passed through respectively side wall prefab (3) are connected, bottom plate prefab (1) with the both ends of roof prefab (5) are equallyd divide and are do not be provided with first tenon joint (11), the both ends of side wall prefab (3) are provided with second tenon joint (12) respectively, first tenon joint (11) with second tenon joint (12) are pegged graft and are cooperated after-tensioning method prestressing force cable constitution prestressing force unsmooth tenon slip casting joint structure.

2. The open cut method rail transit station engineering prefabricated structure as claimed in claim 1, further comprising a prestressed cable (4), wherein an end portion of the bottom plate prefabricated member (1), an end portion of the top plate prefabricated member (5) and an end portion of the side wall prefabricated member (3) are fixed on the prestressed mortise and tenon grouting joint.

3. The open cut method rail transit station engineering prefabricated structure as claimed in claim 1, further comprising a middle plate prefabricated member (2), wherein brackets (7) with first clamping grooves are arranged on inner side surfaces of the two side wall prefabricated members (3), and two ends of the middle plate prefabricated member (2) are correspondingly and respectively lapped on the two brackets (7) with the first clamping grooves.

4. The open cut method rail transit station engineering prefabricated assembly type structure of claim 3, further comprising a rail top air channel prefabricated member (6), wherein a second clamping groove (8) is further formed in the lower surface of the middle plate prefabricated member (2), the rail top air channel prefabricated member (6) is longitudinally inserted in a segmented mode and clamped between the bracket (7) with the first clamping groove and the second clamping groove (8), a slotting joint is sealed through a sealant or a cement-based crystalline material, and the rail top air channel prefabricated member (6) is of a hollow structure.

5. The open cut method rail transit station engineering prefabricated assembly type structure of claim 4, wherein a plurality of longitudinally extending first cavities (9) are formed in the bottom plate prefabricated member (1), and the plurality of first cavities (9) are distributed at equal intervals.

6. The open cut method rail transit station engineering prefabricated assembly type structure of claim 5, wherein a plurality of longitudinally extending second cavities (10) are formed in the top plate prefabricated member (5), and the plurality of second cavities (10) are distributed at equal intervals.

7. The open cut method rail transit station engineering prefabricated assembly type structure of claim 6, wherein a plurality of longitudinally extending third cavities (14) are formed in the middle plate prefabricated member (2), and the plurality of third cavities (14) are distributed at equal intervals.

8. The open cut method track traffic station engineering prefabricated structure according to claim 7, further comprising a support upright post (15), wherein the upper end of the support upright post (15) abuts against the middle of the lower surface of the middle plate prefabricated member (2), and the lower end of the support upright post (15) is detachably connected to the middle of the upper surface of the bottom plate prefabricated member (1).

9. The prefabricated structure for the open-cut method rail transit station project of claim 7, further comprising a first tensioning hole (16) and a second tensioning hole (17), wherein the bottom plate prefabricated member (1) and the top plate prefabricated member (2) are provided with a plurality of the first tensioning holes (16), and the prestressed cable (4) is provided with a plurality of the second tensioning holes (17).

10. A construction method of an open cut method rail transit station engineering prefabricated assembled structure is characterized by being used for constructing and forming the open cut method rail transit station engineering prefabricated assembled structure as claimed in any one of claims 1 to 9, and specifically comprising the following steps of:

s100, prefabricating required components of an assembly type structure in a factory or on site, wherein the components specifically comprise a bottom plate prefabricated member, a middle plate prefabricated member, a side wall prefabricated member, a prestressed cable, a top plate prefabricated member and a rail top air duct prefabricated member;

s200, carrying out open cut method foundation pit engineering construction;

step S300, sequentially assembling a bottom plate prefabricated member, a side wall prefabricated member, a middle plate prefabricated member, a prestressed cable, a top plate prefabricated member and a rail top air duct prefabricated member until the whole structure is assembled;

and S400, removing related construction facilities, and performing soil covering and backfilling.

Technical Field

The invention relates to the technical field of building construction, in particular to an open cut method track traffic station engineering prefabricated assembly type structure and a construction method of the open cut method track traffic station engineering prefabricated assembly type structure.

Background

The open cut method is characterized in that when underground structural engineering construction is carried out, the underground structural engineering is excavated from the ground downwards in a layered and segmented mode until the underground structural engineering reaches the size and the elevation required by the structure, then main structure construction and waterproof operation are carried out in a foundation pit, and finally the ground is backfilled and recovered.

The rail transit station engineering in the prior art needs to be firstly constructed by a supporting structure, then excavation of a foundation pit is carried out, then support is erected or a soil nail or an anchor cable is arranged for supporting, stability of the foundation pit is guaranteed, finally a layered cast-in-place underground structure is constructed to serve as a waterproof layer and the like. Meanwhile, the existing assembly type station needs to excavate a foundation pit firstly, then apply the anchor cable and assemble the station at last, and the application range is greatly limited because urban central areas of cities do not have the condition of applying the anchor cable for many times.

A prefabricated assembly type structure of open cut method rail transit station engineering and a construction method thereof which adopt a prefabricating method to replace a cast-in-place method are lacked.

Disclosure of Invention

Therefore, the invention provides a prefabricated structure for an open cut method rail transit station project, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

according to a first aspect of the invention, the prefabricated structure of the open cut method rail transit station engineering comprises a bottom plate prefabricated part, a top plate prefabricated part and a side wall prefabricated part, wherein the bottom plate prefabricated part is arranged under the top plate prefabricated part at intervals, two ends of the bottom plate prefabricated part and two ends of the top plate prefabricated part are respectively connected through the side wall prefabricated part, two ends of the bottom plate prefabricated part and two ends of the top plate prefabricated part are respectively provided with a first tenon joint, two ends of the side wall prefabricated part are respectively provided with a second tenon joint, and the first tenon joint and the second tenon joints are in inserted connection and matched with a prestress post-tensioning method prestress cable to form a prestress concave-convex tenon grouting joint structure.

The prestressed tenon grouting joint comprises a bottom plate prefabricated member, a top plate prefabricated member and a side wall prefabricated member, wherein the bottom plate prefabricated member is fixedly connected with the side wall prefabricated member through a prestressed cable.

Further, still include the medium plate prefab, two the medial surface of side wall prefab all is provided with the bracket of taking first draw-in groove, the overlap joint that the both ends of medium plate prefab correspond respectively is two on the bracket of taking first draw-in groove.

Further, still include rail top wind channel prefab, the lower surface of medium plate prefab still sets up the second draw-in groove, rail top wind channel prefab segmentation vertically inserts the joint and is in take the bracket of first draw-in groove with between the second draw-in groove, fluting seam crossing adopts sealed glue or cement base crystalline material etc. sealed, rail top wind channel prefab is hollow structure.

Furthermore, a plurality of longitudinally extending first cavities are formed in the bottom plate prefabricated member and are distributed at equal intervals.

Furthermore, a plurality of longitudinally extending second cavities are formed in the top plate prefabricated member and are distributed at equal intervals.

Furthermore, a plurality of longitudinally extending third cavities are formed in the middle plate prefabricated member and are distributed at equal intervals.

Further, the prefabricated part comprises a support upright post, the upper end of the support upright post abuts against the middle part of the lower surface of the middle plate prefabricated part, and the lower end of the support upright post is detachably connected to the middle part of the upper surface of the bottom plate prefabricated part.

Further, the cross section of the first cavity, the second cavity and the third cavity is polygonal, circular or elliptical.

The pre-fabricated part of the bottom plate and the pre-fabricated part of the top plate are provided with a plurality of first tensioning holes, and the pre-stressed cable is provided with a plurality of second tensioning holes.

According to a first aspect of the present invention, a construction method for an open cut method rail transit station engineering prefabricated assembled structure is used for constructing and forming the open cut method rail transit station engineering prefabricated assembled structure according to any one of the first aspect of the present invention, and specifically includes the following steps:

s100, prefabricating required assembled structural components in a factory or on site, wherein the prefabricated components specifically comprise a bottom plate prefabricated component, a middle plate prefabricated component, a side wall prefabricated component, a prestressed cable, a top plate prefabricated component and a rail top air duct prefabricated component;

s200, carrying out open cut method foundation pit engineering construction;

step S300, sequentially assembling a bottom plate prefabricated member, a side wall prefabricated member, a middle plate prefabricated member, a prestressed cable, a top plate prefabricated member and a rail top air duct prefabricated member until the whole structure is assembled;

and S400, removing related construction facilities, and performing soil covering and backfilling.

The invention has the following advantages: by adopting the open cut method rail transit station engineering prefabricated assembly type structure and the construction method, an integral column-free type is adopted, the building space of the rail transit station engineering is released to the greatest extent, meanwhile, the equipment room arrangement is more flexible, and the passenger space experience is more excellent; the bottom plate prefabricated member and the top plate prefabricated member both adopt longitudinal cavity structures, municipal pipelines and other related internal equipment pipelines can be laid in the cavities, and the cavities can also be used as air pipes of ventilation air conditioners, so that the occupation of various equipment pipelines on underground spaces is reduced to the maximum extent, and meanwhile, the cavity size meets the requirement of daily later-stage operation and maintenance; the joint type of the bottom plate prefabricated member, the top plate prefabricated member and the side wall prefabricated member adopts a prestressed tenon-mortise grouting joint, so that the rigidity and force transmission requirements of an assembly type joint are met, the construction is convenient, and the joint is durable and reliable; the middle plate prefabricated part adopts a prefabricated integral assembly type, the rail top air channel prefabricated part adopts clamping groove type assembly connection, safety and reliability are realized, construction is convenient, and a green construction technology of open cut method rail transit station engineering is realized.

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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

Fig. 1 is a structural diagram of a prefabricated structure of an open cut method rail transit station engineering according to some embodiments of the present invention.

Fig. 2 is a structural diagram of a prefabricated structure of an open cut method rail transit station engineering according to some embodiments of the present invention.

Fig. 3 is a sectional hoisting structure diagram of a prefabricated structure of an open cut method rail transit station engineering according to some embodiments of the present invention.

Fig. 4 is a flowchart of a construction method of a prefabricated structure for an open cut method rail transit station project according to some embodiments of the present invention.

In the figure: 1. the prefabricated member of bottom plate, 2, the medium plate prefabricated member, 3, the side wall prefabricated member, 4, the prestressed cable, 5, the roof prefabricated member, 6, the rail top wind channel prefabricated member, 7, take the bracket of first draw-in groove, 8, the second draw-in groove, 9, first cavity, 10, the second cavity, 11, first joggle joint, 12, the second joggle joint, 13, fender pile, 14, the third cavity, 15, support post, 16, first stretch-draw hole, 17, the second stretch-draw hole, 18, hoisting system, 19, pre-buried slip casting pipe.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.

Example 1

As shown in fig. 1, the prefabricated structure of the open cut method rail transit station engineering in this embodiment includes a bottom plate prefabricated member 1, a top plate prefabricated member 5 and a side wall prefabricated member 3, the bottom plate prefabricated member 1 is disposed under the top plate prefabricated member 5 at intervals, two ends of the bottom plate prefabricated member 1 and the top plate prefabricated member 5 are connected through the side wall prefabricated member 3 respectively, two ends of the bottom plate prefabricated member 1 and the top plate prefabricated member 5 are equally provided with a first tenon joint 11 respectively, two ends of the side wall prefabricated member 3 are provided with a second tenon joint 12 respectively, the first tenon joint 11 and the second tenon joint 12 are inserted and matched with a prestressed post-tensioning method prestressed cable to form a prestressed concavo-convex tenon grouting joint structure.

Specifically, first tenon joint 11 is provided with the rectangular shape arch of a plurality of parallels, second tenon joint 12 set up with first tenon joint 11 on the rectangular shape recess that the rectangular shape arch corresponds, the rectangular shape arch is inlayed and is established in the rectangular shape recess, thereby form unsmooth tenon slip casting joint structure, in addition, first tenon joint 11 on the rectangular shape arch be the circular arc transition with the junction of rectangular shape recess, second tenon joint 12 on the rectangular shape arch be the circular arc transition with the junction of rectangular shape recess, thereby stress concentration has been reduced.

The technical effect that this embodiment reaches does: by adopting the prefabricated assembly type structure of the open cut method rail transit station engineering, an integral non-column type is adopted, the building space of the rail transit station engineering is released to the greatest extent, meanwhile, the equipment room arrangement is more flexible, and the passenger space experience is more excellent; the bottom plate prefabricated member and the top plate prefabricated member both adopt longitudinal cavity structures, municipal pipelines and other related internal equipment pipelines can be laid in the cavities, and the cavities can also be used as air pipes of ventilation air conditioners, so that the occupation of various equipment pipelines on underground spaces is reduced to the maximum extent, and meanwhile, the cavity size meets the requirement of daily later-stage operation and maintenance; the joint type of the bottom plate prefabricated member, the top plate prefabricated member and the side wall prefabricated member adopts a prestressed tenon-mortise grouting joint, so that the rigidity and force transmission requirements of an assembly type joint are met, the construction is convenient, and the joint is durable and reliable; the middle plate prefabricated part adopts a prefabricated integral assembly type, the rail top air channel prefabricated part adopts clamping groove type assembly connection, safety and reliability are realized, construction is convenient, and a green construction technology of open cut method rail transit station engineering is realized.

Example 2

As shown in fig. 1 and fig. 3, the prefabricated structure of the open cut method rail transit station engineering in this embodiment includes all the technical features of embodiment 1, and in addition, includes a prestressed cable 4 (steel bar), the end of the bottom plate prefabricated member 1, the end of the top plate prefabricated member 5, and the end of the side wall prefabricated member 3 are fixed on the prestressed mortise and tenon grouting joint, specifically, a tensioning hole is formed in the prestressed cable 4 (steel bar), and correspondingly, holes matched and connected with the tensioning hole are formed in the end of the bottom plate prefabricated member 1, the end of the top plate prefabricated member 5, and the end of the side wall prefabricated member 3.

Optionally, still include medium plate prefab 2, the medial surface of two side wall prefabs 3 all is provided with bracket 7 of taking first draw-in groove, and the overlap joint that corresponds respectively at the both ends of medium plate prefab 2 has strengthened the intensity of whole open cut method track traffic station engineering prefabricated assembly structure on two brackets 7 of taking first draw-in groove through setting up medium plate prefab 2.

Optionally, still include rail top wind channel prefab 6, the lower surface of medium plate prefab 2 still sets up second draw-in groove 8, rail top wind channel prefab 6 segmentation vertically inserts the joint between bracket 7 and the second draw-in groove 8 of taking first draw-in groove, fluting seam crossing adopts sealed glue or cement base crystalline material etc. sealed, rail top wind channel prefab 6 is hollow structure, through setting up rail top wind channel prefab 6, has realized the requirement of ventilating, divide equally on two vertical sides of rail top wind channel prefab 6 respectively be provided with the joint arch of the mutual adaptation of bracket 7 of taking first draw-in groove and second draw-in groove 8.

Example 3

As shown in fig. 1, the prefabricated structure of the open cut method rail transit station engineering in the present embodiment includes all the technical features of embodiment 2, in addition, a plurality of longitudinally extending first cavities 9 are formed in the bottom plate prefabricated member 1, and the plurality of first cavities 9 are distributed at equal intervals.

Optionally, a plurality of longitudinally extending second cavities 10 are formed in the top plate preform 5, and the plurality of second cavities 10 are distributed at equal intervals.

The beneficial effects in this embodiment are: through setting up first cavity 9 in bottom plate prefab 1 and setting up second cavity 10 in roof prefab 5, realized laying of equipment pipeline, reduced the damage that the equipment pipeline exposes the production, still can provide maintenance repair personnel to the maintenance and the maintenance of whole open cut method track traffic station engineering prefabricated assembly structure, in addition, first cavity 9 and second cavity 10 can also play the ventilation effect.

Example 4

As shown in fig. 2, the prefabricated structure of the open cut method rail transit station engineering in the present embodiment includes all the technical features of embodiment 3, in addition, a plurality of longitudinally extending third cavities 14 are formed in the middle plate prefabricated member 2, the plurality of third cavities 14 are distributed at equal intervals, and by providing the third cavities 14, the laying of equipment pipelines is facilitated, ventilation can be facilitated, in addition, the weight of the middle plate prefabricated member 2 can be significantly reduced, and the middle part of the middle plate prefabricated member 2 is prevented from being pressed and bent.

Optionally, still include support post 15, support post 15's upper end butt is at the lower surface middle part of medium plate prefabricated part 2, and the connection can be dismantled in the upper surface middle part of bottom plate prefabricated part 1 to support post 15's lower extreme, and when medium plate prefabricated part 2 was longer, can set up at least one support post 15 and support.

Alternatively, the cross-sections of the first, second, and third cavities 9, 10, and 14 may be polygonal, circular, or elliptical, and the cross-sections of the first, second, and third cavities 9, 10, and 14 are not limited to the above-described shapes.

Optionally, the prestressed reinforcement structure further comprises a first tensioning hole 16 and a second tensioning hole 17, the bottom plate prefabricated member 1 and the top plate prefabricated member 2 are provided with a plurality of first tensioning holes 16, and the prestressed cable 4 is provided with a plurality of second tensioning holes 17.

Example 5

As shown in fig. 1, the prefabricated structure of the open cut method rail transit station engineering in the embodiment includes all the technical features of embodiment 4, and in addition, further includes embedded grouting pipes 19, and the embedded grouting pipes 19 are respectively disposed on the inner sides of the top plate prefabricated member 5 and the side wall prefabricated member 3.

Example 6

As shown in fig. 4, the construction method of the prefabricated structure for the open cut method rail transit station engineering in this embodiment is used for constructing and forming the prefabricated structure for the open cut method rail transit station engineering in any one of embodiments 1 to 5, and specifically includes the following steps:

s100, prefabricating required assembled structural components in a factory or on site, wherein the required assembled structural components specifically comprise a bottom plate prefabricated member, a middle plate prefabricated member, a side wall prefabricated member, a prestressed cable (steel bar), a top plate prefabricated member and a rail top air duct prefabricated member;

s200, carrying out open cut method foundation pit engineering construction;

step S300, sequentially assembling a bottom plate prefabricated member, a side wall prefabricated member, a middle plate prefabricated member, a prestressed cable (steel bar), a top plate prefabricated member and a rail top air duct prefabricated member until the whole structure is assembled;

and S400, removing related construction facilities, and performing soil covering and backfilling.

In the construction process, each prefabricated part is hoisted by adopting a hoisting system 18, and the outside of the side wall prefabricated part 3 is provided with a fender post 13.

The beneficial effects in this embodiment are: by the construction method of the prefabricated structure of the open cut method rail transit station engineering, the whole column-free type is adopted, the building space of the rail transit station engineering is released to the greatest extent, meanwhile, the equipment room arrangement is more flexible, and the passenger space experience is more excellent; the bottom plate prefabricated member and the top plate prefabricated member both adopt longitudinal cavity structures, municipal pipelines and other related internal equipment pipelines can be laid in the cavities, and the cavities can also be used as air pipes of ventilation air conditioners, so that the occupation of various equipment pipelines on underground spaces is reduced to the maximum extent, and meanwhile, the cavity size meets the requirement of daily later-stage operation and maintenance; the joint type of the bottom plate prefabricated member, the top plate prefabricated member and the side wall prefabricated member adopts a prestressed tenon-mortise grouting joint, so that the rigidity and force transmission requirements of an assembly type joint are met, the construction is convenient, and the joint is durable and reliable; the middle plate prefabricated part adopts a prefabricated integral assembly type, the rail top air channel prefabricated part adopts clamping groove type assembly connection, safety and reliability are realized, construction is convenient, and a green construction technology of open cut method rail transit station engineering is realized.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.