Supporting system of metro section contact channel

Abstract

The utility model discloses a supporting system of a metro section connecting channel. The supporting system comprises a stainless steel plate, a profile steel arch frame and a transverse support. The stainless steel plate is fixed to the outer side of a connecting channel second lining concrete layer, the profile steel arch frame is arranged below the stainless steel plate, and the wood plate is arranged between the profile steel arch frame and the stainless steel plate. The profile steel arch frame comprises vertical supports on the two sides and arc-shaped parts arranged on the vertical supports. A transverse support is arranged between the vertical supports on the two sides; battens are arranged between the vertical supports and the transverse supports; the transverse support comprises an initial positioning mechanism and a second positioning mechanism. A stable supporting system is formed by combining the stainless steel plates, the profile steel arch frames and the transverse supports, and the problems of a traditional full framing are solved. The whole system is convenient to build and not prone to deformation. Due to the fact that occupied space is small, follow-up construction is facilitated, and safety and quality of construction of the metro contact channel are guaranteed.

Description

Technical Field

[0001] The utility model relates to a support system for a subway section communication channel, in particular to a secondary lining template support system for a subway section communication channel combined with a "steel arch frame + stainless steel plate". Background Art

[0002] In my country's rail transit construction, shield construction is widely used in line sections. In order to ensure that fire evacuation needs are met, a communication channel must be set up between the two tunnels. In the secondary lining construction of the communication channel, the traditional formwork support system mainly relies on steel formwork combined with full-height brackets.

[0003] The patent with publication number CN206769927U discloses a tunnel portal lining full-height support formwork device, whose structure includes components such as portal support, formwork channel steel, steel arch frame, arched steel formwork and arched wooden formwork. In this device, the portal support is placed in the inner space of the steel formwork. The steel arch frame is composed of multiple units, which are arranged in sequence along the axial direction of the tunnel. The main function is to support the inner side of the steel formwork to ensure the stability and load-bearing capacity of the formwork. Through these settings, the device structure can be simplified to a certain extent and the work efficiency can be improved.

[0004] However, the traditional support system has obvious shortcomings, such as many joints and easy leakage. The opening process of casting holes and embedded parts is also quite difficult. In addition, the construction process of the full-chamber support is complicated and the vertical poles are densely set, which not only hinders the subsequent casting construction work, but also the rigidity of the entire support is insufficient and easy to deform. Therefore, these defects of the traditional secondary lining formwork support system of the subway communication channel have brought certain challenges and potential risks to the safety and quality control of the subway communication channel construction. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a secondary lining formwork support system for a subway section communication channel combining a steel arch frame and a stainless steel plate, thereby avoiding the use of a traditional full-chamber bracket structure and overcoming the technical problems caused by the full-chamber bracket.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A support system for a subway section communication channel, comprising a stainless steel plate, a steel arch frame and a transverse support; the stainless steel plate is fixed to the outer side of the secondary lining concrete layer of the communication channel, the steel arch frame is arranged below the stainless steel plate, and a wooden board is arranged between the steel arch frame and the stainless steel plate;

[0008] The steel arch frame includes vertical supports on both sides and arc-shaped parts arranged on the vertical supports; a transverse support is arranged between the vertical supports on both sides; and wooden squares are arranged between the vertical supports and the transverse supports;

[0009] The lateral support includes an initial positioning mechanism and a second positioning mechanism; the initial positioning mechanism includes a first positioning cylinder, a first adjustment rod and an elastic component, the first adjustment rod is arranged on both sides of the first positioning cylinder, and the elastic component is arranged in the first positioning cylinder; the second positioning mechanism is arranged next to the initial positioning mechanism, and the second positioning mechanism includes a second positioning cylinder and a second adjustment rod, and the second positioning cylinder and the second adjustment rod are threadedly connected. Through the combination of stainless steel plates, steel arch frames and lateral supports, a stable and reliable support system is provided, which can ensure the safety and stability of the communication channel and improve the construction quality and operation efficiency of the subway section.

[0010] As a preferred embodiment, the elastic component includes a spring, which is arranged between the first adjustment rods on both sides of the first positioning cylinder. The introduction of the spring enables the initial positioning mechanism to have elastic adjustment capability, and the spring can exert an outward force on the first adjustment rod, which is conducive to initial positioning.

[0011] As a preferred embodiment, the elastic component further includes a plunger, and the plungers are fixedly arranged at both ends of the spring.

[0012] As a preferred embodiment, the elastic component further comprises an adjustment column, which is fixed at the end of the first adjustment rod and disposed in the first positioning cylinder;

[0013] An internal thread is arranged in the middle of the inner wall of the first positioning cylinder, and an external thread matching with the internal thread is arranged on the adjusting column.

[0014] As a preferred embodiment, second adjusting rods are provided on both sides of the second positioning tube, and ends of the second adjusting rods extend into the second positioning tube.

[0015] As a preferred embodiment, three initial positioning mechanisms and two second positioning mechanisms form a support group, and the initial positioning mechanisms and second positioning mechanisms in the support group are arranged at intervals. The combination of multiple initial positioning mechanisms and second positioning mechanisms forms a complete support system, which can provide better support and fixation, and improve the stability and safety of the communication channel.

[0016] As a preferred embodiment, the initial positioning mechanism further includes a first supporting member, and the first supporting member is fixed to the end of the first adjusting rod.

[0017] As a preferred embodiment, the first support includes a bottom plate and side plates, and the side plates are arranged on both sides of the bottom plate and are inclined. As a preferred embodiment, the second positioning mechanism also includes a second support, and the second support is arranged at the end of the second adjusting rod.

[0018] As a preferred embodiment, the second support includes a flat plate and an inclined plate, wherein the inclined plates are arranged on both sides of the flat plate and inclined outwards. The arrangement of the inclined plates prevents the second positioning mechanism from sliding or falling off during use.

[0019] The utility model has at least the following beneficial effects: by combining stainless steel plates, steel arch frames and lateral supports, a stable support system is formed, overcoming the problems of traditional full-chamber supports, such as the absence of many joints and easy leakage. The entire system is easy to build and not easy to deform. The utility model occupies less space, which is conducive to subsequent construction and ensures the safety and quality of subway connection channel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a structural diagram of the secondary lining formwork support system of the utility model subway section communication channel;

[0022] Figure 2 It is a schematic diagram of the longitudinal structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the lateral support;

[0024] Figure 4 It is a schematic diagram of the local structure of the lateral support;

[0025] Figure 5 It is a structural schematic diagram of the initial positioning mechanism;

[0026] Figure 6 is a structural schematic diagram of a second positioning mechanism;

[0027] In the figure, 1-primary supporting concrete layer of communication channel, 2-second lining concrete layer of communication channel, 3-steel arch frame, 4-stainless steel plate, 5-arch frame connecting piece, 6-wooden board, 7-lateral support, 7.1-primary positioning mechanism, 711-first positioning cylinder, 712-first adjusting rod, 713-first top support, 714-adjusting column, 715-spring, 716-plunger, 7.2-second positioning mechanism, 721-second positioning cylinder, 722-second adjusting rod, 723-second top support, 7.3-connecting assembly, 731-first connecting plate, 732-second connecting plate, 8-wooden square, 9-square steel pipe horizontal support. DETAILED DESCRIPTION

[0028] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0029] Hereinafter, different embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that the present disclosure is not limited to the specific form disclosed herein, but rather, the present disclosure should be interpreted as covering different changes, equivalents and / or replacements of the embodiments of the present disclosure. When describing the accompanying drawings, similar reference numerals may be used to indicate similar components.

[0030] The expressions used in different embodiments of the present disclosure, if there is "first", "second", "the first" or "the second" can modify different elements, regardless of order and / or importance, without limiting the corresponding elements. For example, a first user device and a second user device refer to different user devices, although both of them are user devices. For example, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element without departing from the scope of the present disclosure.

[0031] In the present disclosure, the terms are used to describe specific embodiments and do not limit the present disclosure. As used herein, the singular form is intended to also include the plural form, unless the content clearly indicates otherwise. In the specification, it should be understood that the term "including" or "having" represents the presence of a feature, number, step, operation, structural element, component or combination thereof, without excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, structural elements, components or combinations thereof.

[0032] It should be understood that certain details are provided in the following description to facilitate a complete understanding of the example embodiments. However, one of ordinary skill in the art should understand that the example embodiments can be implemented without these specific details. For example, the system can be shown in a block diagram to avoid obscuring the example with unnecessary details. In other examples, well-known processes, structures, and techniques may not be shown in unnecessary details to avoid obscuring the example.

[0033] like Figure 1 As shown, a support system for a subway section communication channel includes a stainless steel plate 4 (a plate made of stainless steel, the use of the stainless steel plate 4 enhances the corrosion resistance of the structure and improves the service life), a steel arch frame 3 (an arch frame made of steel profiles) and a transverse support 7; the stainless steel plate 4 is fixed to the outside of the second lining concrete layer 2 of the communication channel, the steel arch frame 3 is arranged below the stainless steel plate 4, and a wooden board 6 is filled between the steel arch frame 3 and the stainless steel plate 4.

[0034] The steel arch frame 3 includes vertical supports on both sides and arc-shaped parts arranged on the vertical supports; a transverse support 7 is arranged between the vertical supports on both sides; a wooden plank 8 is arranged between the vertical support and the transverse support 7; the combination of the steel arch frame 3 and the transverse support 7 provides a stable and reliable support structure for the communication channel.

[0035] like Figure 3 As shown, the lateral support 7 includes an initial positioning mechanism 7.1 and a second positioning mechanism 7.2; the initial positioning mechanism 7.1 includes a first positioning cylinder 711, a first adjusting rod 712 and an elastic component, the first positioning cylinder 711 is provided with a first adjusting rod 712 on both sides, and the elastic component is provided in the first positioning cylinder 711; the second positioning mechanism 7.2 is provided beside the initial positioning mechanism 7.1, and the second positioning mechanism 7.2 includes a second positioning cylinder 721 and a second adjusting rod 722, and the second positioning cylinder 721 and the second adjusting rod 722 are threadedly connected. The utility model first performs preliminary positioning through the initial positioning mechanism 7.1 to fix the wood 8, and then strengthens it through the second positioning mechanism 7.2. Through the cooperation of the two positioning mechanisms, the wood 8 and the steel arch frame 3 are firmly positioned. Generally, a steel arch frame 3 is erected every 0.5m.

[0036] In a preferred embodiment, the elastic component includes a spring 715, and the spring 715 is arranged between the first adjustment rods 712 on both sides of the first positioning tube 711. The utility model pushes the first adjustment rod 712 outward through the action of the spring 715 (compression spring), thereby achieving a preliminary fixing effect.

[0037] In a preferred embodiment, the elastic component further includes a plunger 716, and the plungers 716 are fixedly arranged at both ends of the spring 715. The purpose of arranging the plunger 716 is to increase the stability of the elastic force squeezing the first adjustment rod 712. The shape of the plunger 716 is consistent with the shape of the inner cavity of the first positioning cylinder 711, such as a round or cylindrical shape, and the size of the plunger 716 is slightly smaller than the size of the inner cavity of the first positioning cylinder 711, for example, the distance between the outer side of the plunger 716 and the inner wall of the first positioning cylinder 711 is 1-3 mm.

[0038] In a preferred embodiment, see Figure 5 , the elastic component further includes an adjustment column 714, which is fixed to the end of the first adjustment rod 712 and disposed in the first positioning cylinder 711;

[0039] The middle part of the inner wall of the first positioning cylinder 711 is provided with an internal thread, and the adjusting column 714 is provided with an external thread matching the internal thread. Generally, the cooperation between the spring 715 and the plunger 716 can realize the function of preliminary positioning, but if the position of the spring 715 is not restricted, the spring 715 is easy to swing left and right. Therefore, when not in use, the adjusting column 714 is screwed into the first positioning cylinder 711 to prevent the spring 715 from detaching from the first positioning cylinder 711.

[0040] In a preferred embodiment, if Figure 6As shown, the second positioning cylinder 721 is provided with a second adjustment rod 722 on both sides, and the end of the second adjustment rod 722 extends into the second positioning cylinder 721. When in use, the relative position of the second adjustment rod 722 and the second positioning cylinder 721 is preliminarily adjusted. When the end of the second adjustment rod 722 abuts against the wooden square 8, the second positioning cylinder 721 is rotated, and the second adjustment rod 722 moves outward at the same time by setting the thread rotation direction on both sides of the second positioning cylinder 721 until it abuts against the wooden square 8. When not in use, the second positioning cylinder 721 is rotated to make the second adjustment rod 722 move inward at the same time, and the second adjustment rod 722 releases the wooden square 8.

[0041] In a preferred embodiment, three initial positioning mechanisms 7.1 and two second positioning mechanisms 7.2 form a support group, and the initial positioning mechanisms 7.1 and the second positioning mechanisms 7.2 in the support group are arranged at intervals. The support group is provided for easy installation or disassembly.

[0042] In a preferred embodiment, if Figure 3 and Figure 4 As shown, the cross-sectional diameters of the first positioning cylinder 711 and the second adjusting rod 722 are consistent, and a connecting assembly 7.3 is arranged on the first positioning cylinder 711 and the second adjusting rod 722. The connecting assembly 7.3 includes a first connecting plate 731 and a second connecting plate 732. The first connecting plate 731 and the second connecting plate 732 are assembled by a bolt assembly to form a through hole for accommodating the first positioning cylinder 711 or the second adjusting rod 722 after assembly.

[0043] In a preferred embodiment, the initial positioning mechanism 7 . 1 further includes a first lifting support 713 , and the first lifting support 713 is fixed to the end of the first adjusting rod 712 .

[0044] In a preferred embodiment, the first supporting member 713 includes a bottom plate and side plates, and the side plates are arranged on both sides of the bottom plate and are inclined.

[0045] In a preferred embodiment, the second positioning mechanism 7 . 2 further includes a second lifting support 723 , and the second lifting support 723 is arranged at the end of the second adjusting rod 722 .

[0046] In a preferred embodiment, the second support 723 includes a flat plate and an inclined plate, and the inclined plates are arranged on both sides of the flat plate and inclined outward. The utility model can press against the wooden square 8 through the first support 713 and / or the second support 723, which is convenient for installation or removal.

[0047] In a preferred embodiment, the support system includes a formwork part (thin stainless steel plate 4 + wooden board 6) and a support part (square steel tube steel arch frame 3 + horizontal support + steel tube horizontal support). After the second lining steel bars of the communication channel are tied, the thin stainless steel plate 4 is first fixed to the outside of the second lining steel bar skeleton to form the inner membrane of the formwork, and a steel arch frame is erected every 0.5m. Then, the wooden board 6 is used as the formwork skeleton to fill the space between the thin stainless steel plate 4 and the steel arch frame, and finally the connecting bolts are tightened again and the horizontal support is reinforced to form a complete formwork support system.

[0048] Preferably, the thin stainless steel plate 4 of the utility model is a 2b smooth 304 stainless steel plate 4 with a thickness of 1 mm and an optional size of 1000*2000 mm. The surface is required to be smooth and the specific size can be cut according to actual needs.

[0049] Preferably, the wooden board 6 has a thickness of 50 mm, a width of 150 mm, and a length of 2000 mm. The inner side of the template is chamfered in the arch portion according to the curvature of the communication channel to eliminate the template joints.

[0050] Preferably, the square steel tube steel arch frame 3 is composed of 4 pieces spliced ​​together, and the arch frame connector 5 is used to connect them. The arch frame connector 5 includes a welded enlarged connecting plate and a bolt. The connecting plate is 10mm thick and welded to the end of the steel arch frame 3. The bolt specification is M12 bolts to fix the adjacent connecting plates. The steel adopts a square steel tube with a cross-sectional size of 100mm*100mm and a thickness of 8mm. The length of each steel arch frame 3 is calculated according to the design size of the communication channel, and the two pieces of the arch top are processed with arcs according to the design size of the communication channel.

[0051] The utility model is further described below.

[0052] like Figure 1 , Figure 2 As shown, the utility model describes a secondary lining formwork support system for a subway section communication channel combined with a steel arch frame 3 and a thin stainless steel plate 4, and its implementation steps (the protection scope is not limited to the steps provided by the utility model) are as follows:

[0053] a. The secondary lining concrete layer 2 of the communication channel needs to be poured under the primary support concrete layer 1 of the communication channel. After the secondary lining steel bars of the communication channel are tied, the stainless steel plate 4 is temporarily fixed on the outside of the secondary lining steel bar skeleton to form the inner membrane of the template. The position of the thin stainless steel plate 4 is accurate according to the thickness of the protective layer of the secondary lining structure.

[0054] b. Assemble the prefabricated steel arch frame 3 into blocks, fix the connecting plate of the arch frame connector 5 with bolts, and erect one every 0.5m along the length direction of the communication channel;

[0055] c. After the steel arch frame 3 is erected, the wooden board 6 is filled between the stainless steel plate 4 and the steel arch frame 3 to form a template skeleton. The wooden board 6 is required to be tightly spliced ​​to ensure that it can effectively transfer the secondary lining concrete construction load to the steel arch frame 3.

[0056] d. After the wooden board 6 is filled, the connecting bolts of the steel arch frame 3 are tightened again.

[0057] e. Install horizontal supports and square timbers to make the horizontal supports press against the steel arch frame 3. Preferably, a square steel pipe horizontal support 9 is also provided at the bottom of the steel arch frame 3 to further enhance the connection stability of the steel arch frame 3.

[0058] Although the preferred embodiments of the utility model have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A support system for a subway section communication channel, characterized in that: It includes a stainless steel plate, a steel arch frame and a transverse support; the stainless steel plate is fixed on the outer side of the second lining concrete layer of the communication channel, the steel arch frame is arranged below the stainless steel plate, and a wooden board is arranged between the steel arch frame and the stainless steel plate; The steel arch frame includes vertical supports on both sides and arc-shaped parts arranged on the vertical supports; a transverse support is arranged between the vertical supports on both sides; and wooden squares are arranged between the vertical supports and the transverse supports; The lateral support includes an initial positioning mechanism and a second positioning mechanism; the initial positioning mechanism includes a first positioning cylinder, a first adjusting rod and an elastic component, first adjusting rods are arranged on both sides of the first positioning cylinder, and the elastic component is arranged in the first positioning cylinder; the second positioning mechanism is arranged next to the initial positioning mechanism, the second positioning mechanism includes a second positioning cylinder and a second adjusting rod, and the second positioning cylinder and the second adjusting rod are threadedly connected.

2. A support system for a subway section communication channel according to claim 1, characterized in that: The elastic component comprises a spring, and the spring is arranged between the first adjusting rods on both sides of the first positioning cylinder.

3. The support system for a subway section communication channel according to claim 2, characterized in that: The elastic component also includes a plunger, and the plungers are fixedly arranged at both ends of the spring.

4. The support system for a subway section communication channel according to claim 3, characterized in that: The elastic component also includes an adjustment column, which is fixed to the end of the first adjustment rod and is arranged in the first positioning cylinder; An internal thread is arranged in the middle of the inner wall of the first positioning cylinder, and an external thread matching with the internal thread is arranged on the adjusting column.

5. The support system for a subway section communication channel according to claim 1, characterized in that: Second adjusting rods are arranged on both sides of the second positioning cylinder, and the ends of the second adjusting rods extend into the second positioning cylinder.

6. The supporting system for a subway section communication channel according to claim 1, characterized in that: Three initial positioning mechanisms and two second positioning mechanisms form a support group, and the initial positioning mechanism and the second positioning mechanism in the support group are arranged at intervals.

7. The support system for a subway section communication channel according to claim 1, characterized in that: The initial positioning mechanism also includes a first support, which is fixed to the end of the first adjusting rod.

8. The support system for a subway section communication channel according to claim 7, characterized in that: The first supporting member comprises a bottom plate and side plates, wherein the side plates are arranged on both sides of the bottom plate and are inclined.

9. The support system for a subway section communication channel according to claim 1, characterized in that: The second positioning mechanism also includes a second supporting member, which is arranged at the end of the second adjusting rod.

10. A support system for a subway section communication channel according to claim 9, characterized in that: The second supporting member comprises a flat plate and an inclined plate, wherein the inclined plates are arranged on both sides of the flat plate and are inclined outwards.

Images