Assembly type double-enclosing-purlin system with adjustable supporting axial force and construction method of assembly type double-enclosing-purlin system

Abstract

The invention provides an assembly type double-enclosing-purlin system capable of adjusting supporting axial force and a construction method of the assembly type double-enclosing-purlin system. The assembly type double-enclosing-purlin system comprises steel double-enclosing-purlin unit modules, positioning supporting pieces, unit connecting pieces, supporting connecting pieces and supports. The positioning supporting piece is fixedly installed on the enclosure wall body, one end of each steel double-enclosing-purlin unit module is placed on the positioning supporting piece, and the multiple sets of steel double-enclosing-purlin unit modules are sequentially arranged in the length direction, opposite to the wall face, of the enclosure wall body through the positioning supporting piece; the other end of the steel double-enclosing-purlin unit module is detachably connected with the end part of the support through the support connecting piece, so that the support is supported between two opposite wall bodies of the enclosure wall body through the steel double-enclosing-purlin unit module; every two adjacent groups of steel enclosing purlin unit modules are detachably connected through unit connecting pieces to form an assembly type double-enclosing purlin system. The invention relates to the technical field of constructional engineering, and can solve the problem that in the prior art, a cast-in-place concrete enclosing purlin cannot quickly and effectively form an enclosing purlin force transfer system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, in particular to an adjustable support axial force assembly type double surrounding purlin system and a construction method thereof. BACKGROUND

[0002] With the continuous development of construction technology and the increasing tension of urban land space, the number and depth of foundation pits in current building engineering are generally increased. The problems that follow are also obvious, that is, the safety risk of the foundation pit and the increase of the construction period.

[0003] Deep foundation pits often use multi-line support construction, and some use adjustable support axial force technology. However, in the construction process of traditional construction support, especially concrete support, the surrounding purlin on the side of the retaining wall is often cast-in-place concrete surrounding purlin. This form of surrounding purlin construction is complex and time-consuming, and after pouring, maintenance is required to reach the predetermined strength, thereby forming a surrounding purlin force transmission system. During this period, the foundation pit is likely to have risks such as retaining deformation, soil disturbance sand flow, and pressure water gushing.

[0004] Therefore, it is necessary to provide an adjustable support axial force assembly type double surrounding purlin system and a construction method thereof, which can solve the problem that the cast-in-place concrete surrounding purlin in the prior art cannot quickly and effectively form a surrounding purlin force transmission system. SUMMARY

[0005] The purpose of the present application is to provide an adjustable support axial force assembly type double surrounding purlin system and a construction method thereof, which can solve the problem that the cast-in-place concrete surrounding purlin in the prior art cannot quickly and effectively form a surrounding purlin force transmission system.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0007] An adjustable support axial force assembly type double surrounding purlin system, comprising: a steel double surrounding purlin unit module, a positioning support, a unit connecting piece, a support connecting piece and a support; the positioning support is fixedly installed on the retaining wall body, one end of the steel double surrounding purlin unit module is placed on the positioning support, and a plurality of groups of steel double surrounding purlin unit modules are arranged in sequence along the length direction of the retaining wall body relative to the wall surface through the positioning support; the other end of the steel double surrounding purlin unit module is detachably connected with the end of the support through the support connecting piece, so that the support is supported between the two opposite wall bodies of the retaining wall body through the steel double surrounding purlin unit module; each adjacent two groups of steel surrounding purlin unit modules are detachably connected through the unit connecting piece, forming an assembly type double surrounding purlin system.

[0008] Each of the steel double-purlin unit modules comprises a first double-long-section steel assembly, a second double-long-section steel assembly, a first double-short-section steel assembly, a second double-short-section steel assembly, and a jack; the first double-long-section steel assembly, the first double-short-section steel assembly, the second double-long-section steel assembly, and the second double-short-section steel assembly are sequentially connected end to end to form a steel purlin frame; the jack is installed in the steel purlin frame, and the jack is in the same axial direction as the support; the first double-long-section steel assembly is placed on a positioning support, and the second double-long-section steel assembly is detachably connected to the end of the support through a support connecting piece.

[0009] The first double-long-section steel assembly comprises a first section steel and a second section steel, and the second double-long-section steel assembly comprises a third section steel and a fourth section steel; the first section steel, the second section steel, the third section steel, and the fourth section steel are of the same length; the first section steel and the second section steel are welded along the length direction to form a double-section steel structure, and the third section steel and the fourth section steel are welded along the length direction to form a double-section steel structure; the first double-short-section steel assembly, the second double-short-section steel assembly, and the jack are connected between the second section steel and the third section steel, and the end of the support is connected to the fourth section steel through the support connecting piece; a unit connecting piece is connected between the section webs of the first section steel, the second section steel, the third section steel, and the fourth section steel of adjacent two steel double-purlin unit modules.

[0010] The first double-short-section steel assembly comprises a first short section steel and a second short section steel, and the second double-short-section steel assembly comprises a third short section steel and a fourth short section steel; the first short section steel, the second short section steel, the third short section steel, and the fourth short section steel are of the same length and are detachably connected vertically between the second section steel and the third section steel.

[0011] One end of the jack is detachably connected to the second section steel through a first end plate, and the other end of the jack is detachably connected to the third section steel through a second end plate.

[0012] The positioning support comprises a positioning plate and a corbel; the positioning plate is installed on the wall surface of the enclosure wall, and the corbel is installed on the positioning plate, and the first double-long-section steel assembly of the steel double-purlin unit module is placed on the corbel.

[0013] The first double-long-section steel assembly is provided with a first ear plate and a second ear plate, and the first ear plate and the second ear plate are connected to the enclosure wall through a steel wire rope; the first ear plate is located in the middle of the first double-long-section steel assembly, i.e., on the axial extension line of the support, and the second ear plate is located at the two end portions of the first double-long-section steel assembly.

[0014] When the support is a steel support, the support connecting piece comprises a support connecting plate and a bolt, the support connecting plate is welded to the fourth section steel, and the bolt is welded to the support connecting plate and connected to the steel support.

[0015] When the support is a reinforced concrete support, the support connecting piece comprises a support connecting plate and a bolt sleeve, the support connecting plate is welded on the fourth section steel, and the bolt sleeve is welded on the support connecting plate; the main reinforcement of the reinforced concrete support is connected with the bolt sleeve.

[0016] The unit connecting piece comprises connecting plates and connecting pieces; two connecting plates are respectively arranged on the end top surface and bottom surface of the section steel web of the first section steel of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates and the adjacent section steel web of the first section steel are connected and fixed through the connecting pieces; two connecting plates are respectively arranged on the end top surface and bottom surface of the section steel web of the second section steel of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates and the adjacent section steel web of the second section steel are connected and fixed through the connecting pieces; two connecting plates are respectively arranged on the end top surface and bottom surface of the section steel web of the third section steel of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates and the adjacent section steel web of the third section steel are connected and fixed through the connecting pieces; two connecting plates are respectively arranged on the end top surface and bottom surface of the section steel web of the fourth section steel of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates and the adjacent section steel web of the fourth section steel are connected and fixed through the connecting pieces.

[0017] A construction method of an assembled double enclosing purlin system with adjustable support axial force, comprising the following steps:

[0018] Step 1: installing a positioning support on a surrounding wall body;

[0019] Step 2: manufacturing a steel double enclosing purlin unit module;

[0020] Step 3: placing one end of the steel double enclosing purlin unit module on the positioning support and connecting the steel double enclosing purlin unit module with the surrounding wall body;

[0021] Step 4: connecting adjacent two groups of steel double enclosing purlin unit modules through a unit connecting piece;

[0022] Step 5: connecting the other end of the steel double enclosing purlin unit module with the end of a support through a support connecting piece.

[0023] The dismounting method of the steel double enclosing purlin unit module is as follows:

[0024] S1: connecting a hoisting steel wire rope to each steel double enclosing purlin unit module;

[0025] S2: dismounting the support;

[0026] S3: dismounting a unit connecting piece and releasing the connection between adjacent two groups of steel double enclosing purlin unit modules;

[0027] S4: untying the steel wire rope and hoisting the steel double enclosing purlin unit module through a hoisting device and transporting the steel double enclosing purlin unit module away.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] 1. The application has the modular steel double enclosing purlin unit module, the steel double enclosing purlin unit module is connected between the enclosing wall and the support end through the positioning support similar to the way of building blocks, can quickly form the enclosing purlin force transmission system of support, does not need to carry out the complex procedures such as binding steel bar, setting formwork, pouring concrete, curing of traditional reinforced concrete enclosing purlin, greatly shortens the construction period, and has the advantages of flexible arrangement, reusable, reduce resource waste, realize green cycle and sustainable.

[0030] 2. The steel double enclosing purlin unit module is sequentially arranged along the enclosing wall relative to the wall surface, so that the support point load is dispersed as the enclosing purlin linear load acting on the enclosing wall, and the deformation and torsion of the enclosing wall are reduced.

[0031] 3. Each group of steel double enclosing purlin unit modules in the application comprises an independent jack and is separately connected to a support, the jack can be controlled by a servo system to accurately control the axial force of each support, thereby achieving the purpose of actively controlling the deformation of the enclosing wall. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings in which like reference characters designate the same elements throughout the attached drawings.

[0033] Figure 1 is a construction plan view of the assembled double enclosing purlin system with adjustable support axial force of the application;

[0034] Figure 2 is Figure 1 A-A section view of

[0035] Figure 3 is Figure 1 B-B section view of

[0036] In the drawings, enclosing wall 1, positioning plate 2, corbel 3, first steel 41, second steel 42, third steel 43, fourth steel 44, first ear plate 51, second ear plate 52, steel web 61, connecting plate 62, connecting piece 63, first short steel 71, second short steel 72, third short steel 73, fourth short steel 74, jack 8, first end plate 81, second end plate 82, support connecting plate 91, bolt sleeve 92, steel wire rope 10, support 11, first group of steel double enclosing purlin unit modules 01, second group of steel double enclosing purlin unit modules 02, third group of steel double enclosing purlin unit modules 03. DETAILED DESCRIPTION

[0037] The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the application will be more apparent according to the following description and claims. It should be noted that the drawings are very simplified and all use non-precise proportions, only for the purpose of facilitating and clarifying the description of the embodiments of the application.

[0038] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 3 A kind of adjustable support axial force assembly type double encloses purlin system, including steel double encloses purlin unit module, positioning support, unit connecting piece, support connecting piece and support 11;Positioning support is fixedly installed on the enclosure wall 1, one end of steel double encloses purlin unit module rests on positioning support, and several groups of steel double encloses purlin unit module are sequentially arranged along the length direction of the enclosure wall 1 relative to wall by positioning support;The other end of steel double encloses purlin unit module is detachably connected with the end of support 11 by support connecting piece, so that support 11 is supported between the two opposite walls of the enclosure wall 1 by steel double encloses purlin unit module;Each adjacent two groups of steel encloses purlin unit module are detachably connected by unit connecting piece, forming assembly type double encloses purlin system.

[0039] The two ends of each support 11 can be connected to the enclosure wall 1 by steel double encloses purlin unit module, and the support purlin force transmission system is quickly formed in a manner similar to building blocks, without the need for complex processes such as traditional steel binding, formwork setting, concrete pouring and curing to construct the purlin force transmission system, thereby optimizing the traditional purlin construction process, speeding up the formation of the purlin force transmission system, and effectively shortening the construction period to solve the problems of long construction time and high construction risk in the prior art.

[0040] The positioning support is used for the resting installation of steel double encloses purlin unit module on the enclosure wall 1, and is convenient and fast to disassemble and assemble, which can meet the demand of green environmental protection and reusability;The support connecting piece is used for the detachable connection of the end of support 11 and steel double encloses purlin unit module, and is convenient and fast to disassemble and assemble. The unit connecting piece is used for connecting adjacent two groups of steel double encloses purlin unit module, connecting the steel double encloses purlin unit modules of each group assembled in a manner similar to building blocks into a whole, and quickly forming a reliable purlin force transmission system.

[0041] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 3Each of the steel double-surrounding-purlin unit modules comprises a first double-long-section steel component, a second double-long-section steel component, a first double-short-section steel component, a second double-short-section steel component, and a jack 8; the first double-long-section steel component, the first double-short-section steel component, the second double-long-section steel component, and the second double-short-section steel component are sequentially connected in a head-to-tail manner to form a steel surrounding-purlin frame; the jack 8 is installed in the steel surrounding-purlin frame, and the jacking direction of the jack 8 is consistent with the axial direction of the support 11; the first double-long-section steel component is placed on the positioning support, and the second double-long-section steel component is detachably connected with the end of the support 11 through a support connecting piece.

[0042] The steel surrounding-purlin frame is made of section steel, which is easy to obtain and manufacture, and is convenient to install and detach, and can be recycled and used repeatedly, has high structural strength, and can quickly and reliably connect the enclosure wall 1 and the support 11. Meanwhile, through the setting of the jack 8 and the adjustment of the jacking force, the adjustment of the axial force can be supported.

[0043] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 3 The first double-long-section steel component comprises a first section steel 41 and a second section steel 42, and the second double-long-section steel component comprises a third section steel 43 and a fourth section steel 44; the lengths of the first section steel 41, the second section steel 42, the third section steel 43, and the fourth section steel 44 are consistent; the first section steel 41 and the second section steel 42 are welded along the length direction to form a double-section steel structure, and the third section steel 43 and the fourth section steel 44 are welded along the length direction to form a double-section steel structure; the first double-short-section steel component, the second double-short-section steel component, and the jack 8 are connected between the second section steel 42 and the third section steel 43, and the end of the support 11 is connected with the fourth section steel 44 through a support connecting piece; a unit connecting piece is connected between the section steel webs 61 of the first section steel 41, the second section steel 42, the third section steel 43, and the fourth section steel 44 of the adjacent two groups of steel double-surrounding-purlin unit modules.

[0044] Preferably, the first section steel 41, the second section steel 42, the third section steel 43, and the fourth section steel 44 can adopt I-beams, and the specifications and lengths of the I-beams can be adaptively selected according to the actual construction conditions. The first section steel 41 and the second section steel 42 are connected through the welding of the flanges thereof, and the third section steel 43 and the fourth section steel 44 are connected through the welding of the flanges thereof.

[0045] The ends of the first section steels 41 of the adjacent two groups of steel double-surrounding-purlin unit modules are aligned and connected through a unit connecting piece, the ends of the second section steels 42 of the adjacent two groups of steel double-surrounding-purlin unit modules are aligned and connected through a unit connecting piece, the ends of the third section steels 43 of the adjacent two groups of steel double-surrounding-purlin unit modules are aligned and connected through a unit connecting piece, and the ends of the fourth section steels 44 of the adjacent two groups of steel double-surrounding-purlin unit modules are aligned and connected through a unit connecting piece, so as to connect each of the adjacent two groups of steel double-surrounding-purlin unit modules together, and all the steel double-surrounding-purlin unit modules are connected to form a whole.

[0046] Please see the attached Figure 1 and the attached Figure 3 , the first double short steel assembly includes the first short steel 71 and the second short steel 72, the second double short steel assembly includes the third short steel 73 and the fourth short steel 74; the first short steel 71, the second short steel 72, the third short steel 73 and the fourth short steel 74 have the same length and are vertically connected between the second steel 42 and the third steel 43 by bolts.

[0047] Preferably, the first short steel 71, the second short steel 72, the third short steel 73 and the fourth short steel 74 can adopt I-beams, and the specifications of the I-beams can be adaptively selected according to actual construction conditions. The first short steel 71, the second short steel 72, the third short steel 73 and the fourth short steel 74 with appropriate lengths can be adaptively selected according to the extension length of the jacking end of the jack 8 to ensure the support axial force adjustment function.

[0048] One end of the first short steel 71, the second short steel 72, the third short steel 73 and the fourth short steel 74 is connected to the second steel 42 by bolts, and the other end of the first short steel 71, the second short steel 72, the third short steel 73 and the fourth short steel 74 is connected to the third steel 43 by bolts, which is convenient, fast and reliable, and ensures the effective transmission of the support axial force.

[0049] Please see the attached Figure 2 , one end of the jack 8 is connected to the second steel 42 by the first end plate 81 through bolts, and the other end of the jack 8 is connected to the third steel 43 by the second end plate 82 through bolts.

[0050] One end (fixed end) of the jack 8 is provided with the first end plate 81 and is installed on the wing plate of the second steel 42 by bolts, which facilitates the installation, fixation and disassembly of the jack 8. The other end (extension end) of the jack 8 is provided with the second end plate 82 and is installed on the wing plate of the third steel 43 by bolts, which facilitates the extension of the jack 8 and the adjustment of the support axial force.

[0051] Preferably, the jack 8 is installed between the middle parts of the second steel 42 and the third steel 43 and is located on the same straight line as the support 11, thereby ensuring the stable stress of the surrounding purlin force transmission system.

[0052] Please see the attached Figure 2 and the attached Figure 3 , the positioning support includes the positioning plate 2 and the corbel 3; the positioning plate 2 is installed on the wall surface of the enclosure wall 1, the corbel 3 is installed on the positioning plate 2, and the first double long steel assembly of the steel double surrounding purlin unit module is placed on the corbel 3.

[0053] Preferably, the positioning plate 2 is made of steel plate and is embedded and installed on the wall surface of the enclosure wall 1 through a pre-embedded part. The corbel 3 is made of steel corbel and is welded on the positioning plate 2. The number and size of the corbel 3 can be adjusted adaptively according to the load and the size of the first double-long steel assembly, and are used for supporting the first steel 41 and the second steel 42.

[0054] Please refer to the attached Figure 2 and the attached Figure 3 , the first double-long steel assembly is welded and installed with the first ear plate 51 and the second ear plate 52, and the first ear plate 51 and the second ear plate 52 are connected with the enclosure wall 1 through the steel wire rope 10; the first ear plate 51 is located at the middle part of the first double-long steel assembly, that is, on the axial extension line of the support 11, and the second ear plate 52 is located at the two end parts of the first double-long steel assembly.

[0055] Preferably, the first ear plate 51 and the second ear plate 52 can be welded on the top of the wing plate of the welded connection of the first steel 41 and the second steel 42. The first ear plate 51 is provided with one plate and is located at the middle part of the first steel 41 and the second steel 42, and the second ear plate 52 is provided with two plates and is located at the two end parts of the first steel 41 and the second steel 42.

[0056] Preferably, the connecting ring and other structures for binding and connecting the steel wire rope 10 can be provided on the enclosure wall 1, the first ear plate 51 and the second ear plate 52, so as to facilitate the installation and connection of the steel wire rope 10. Through the setting of the steel wire rope 10, the stability of the first double-long steel assembly supported on the corbel 3 and the reliability of the connection between the first double-long steel assembly and the enclosure wall 1 are ensured, so as to ensure the stable force transmission of the enclosure purlin force transmission system.

[0057] Please refer to the attached Figure 2 , when the support 11 is a steel support, the support connecting part includes a support connecting plate 91 and a bolt (not shown in the figure), the support connecting plate 91 is welded on the fourth steel 44, and the bolt is welded on the support connecting plate 91 and is connected with the steel support.

[0058] Please refer to the attached Figure 2 , when the support 11 is a reinforced concrete support, the support connecting part includes a support connecting plate 91 and a bolt sleeve 92, the support connecting plate 91 is welded on the fourth steel 44, and the bolt sleeve 92 is welded on the support connecting plate 91; the main reinforcement of the reinforced concrete support is connected with the bolt sleeve 92.

[0059] Through the setting of the bolt or the bolt sleeve 92, the connection mode can be flexibly adjusted according to the type of the specific support 11, and good adaptability is achieved.

[0060] Please refer to the attached Figure 3The unit connecting member includes connecting plates 62 and connecting members 63; two connecting plates 62 are respectively arranged on the top surface and the bottom surface of the end portion of the steel web plate 61 of the first section steel 41 of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates 62 and the steel web plate 61 of the adjacent first section steel 41 are connected and fixed through the connecting member 63; two connecting plates 62 are respectively arranged on the top surface and the bottom surface of the end portion of the steel web plate 61 of the second section steel 42 of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates 62 and the steel web plate 61 of the adjacent second section steel 42 are connected and fixed through the connecting member 63; two connecting plates 62 are respectively arranged on the top surface and the bottom surface of the end portion of the steel web plate 61 of the third section steel 43 of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates 62 and the steel web plate 61 of the adjacent third section steel 43 are connected and fixed through the connecting member 63; two connecting plates 62 are respectively arranged on the top surface and the bottom surface of the end portion of the steel web plate 61 of the fourth section steel 44 of the adjacent two groups of steel double enclosing purlin unit modules, and the two connecting plates 62 and the steel web plate 61 of the adjacent fourth section steel 44 are connected and fixed through the connecting member 63.

[0061] Preferably, the connecting member 63 can adopt a high-strength bolt and nut set, and the connecting plate 62 can adopt a steel plate.

[0062] Taking the connection of the steel web plate 61 of the first section steel 41 of the adjacent two groups of steel double enclosing purlin unit modules as an example, one end of one connecting plate 62 is overlapped on the top surface of the end portion of the steel web plate 61 of the first section steel 41 of one group of steel double enclosing purlin unit modules, and the other end is overlapped on the top surface of the end portion of the steel web plate 61 of the first section steel 41 of the other group of steel double enclosing purlin unit modules; one end of the other connecting plate 62 is overlapped on the bottom surface of the end portion of the steel web plate 61 of the first section steel 41 of one group of steel double enclosing purlin unit modules, and the other end is overlapped on the bottom surface of the end portion of the steel web plate 61 of the first section steel 41 of the other group of steel double enclosing purlin unit modules; the two connecting plates 62 are connected and fixed with the two steel web plates 61 through the plurality of connecting members 63, so that the first section steels 41 of the two groups of steel double enclosing purlin unit modules are connected into one whole.

[0063] The connection modes of the second section steel 42, the third section steel 43 and the fourth section steel 44 of the adjacent two groups of steel double enclosing purlin unit modules are the same, and details are not repeated here, which ensures that the connection of the adjacent two groups of steel double enclosing purlin unit modules is reliable and convenient to disassemble.

[0064] Please refer to the accompanying drawings Figure 1 A construction method of an assembled double enclosing purlin system with adjustable support axial force, comprising the following steps:

[0065] Step 1: installing a positioning support on the enclosing wall body 1.

[0066] Specifically, a positioning steel plate 2 is installed on the enclosing wall body 1, and a corbel 3 is welded on the positioning steel plate 2.

[0067] Step 2: Make a steel double-surrounding purlin unit module.

[0068] Specifically, the first profiled steel 41 and the second profiled steel 42, the third profiled steel 43 and the fourth profiled steel 44 are connected by welding, and the first short profiled steel 71, the second short profiled steel 72, the third short profiled steel 73, the fourth short profiled steel 74, the second profiled steel 42 and the third profiled steel 43 are connected by bolting; the first end plate 81 and the second end plate 82 at both ends of the jack 8 are respectively connected with the second profiled steel 42 and the third profiled steel 43 by bolting, forming a group of steel double-surrounding purlin unit modules.

[0069] Attached Figure 1 Three groups of steel double-surrounding purlin unit modules are shown, which are the first group of steel double-surrounding purlin unit modules 01, the second group of steel double-surrounding purlin unit modules 02 and the third group of steel double-surrounding purlin unit modules 03.

[0070] Step 3: Place one end of the steel double-surrounding purlin unit module on the positioning support and connect it with the enclosure wall 1.

[0071] Specifically, the first profiled steel 41 and the second profiled steel 42 of the steel double-surrounding purlin unit module are placed on the corbel 3, and the first lug plate 51 and the second lug plate 52 are welded on the wing plate at the connection between the first profiled steel 41 and the second profiled steel 42, the first lug plate 51 is located in the middle of the first profiled steel 41 and the second profiled steel 42, and the two second lug plates 52 are respectively located at both ends of the first profiled steel 41 and the second profiled steel 42, and the steel wire rope 10 is tensioned and connected between the first lug plate 51 and the second lug plate 52 and the enclosure wall 1.

[0072] Step 4: Connect the adjacent two groups of steel double-surrounding purlin unit modules through unit connecting elements.

[0073] Specifically, the two connecting plates 62 are placed on the top surface and the bottom surface of the profiled web 61 of the first profiled steel 41 of the first group of steel double-surrounding purlin unit modules 01 and the profiled web 61 of the first profiled steel 41 of the second group of steel double-surrounding purlin unit modules 02, and the two connecting plates 62 are connected and fixed with the profiled web 61 of the first profiled steel 41 of the first group of steel double-surrounding purlin unit modules 01 and the profiled web 61 of the first profiled steel 41 of the second group of steel double-surrounding purlin unit modules 02 through multiple connecting elements 63.

[0074] The first section steel double enclosing purlin unit module 01 first section steel 41 and the third section steel double enclosing purlin unit module 03 first section steel 41, the first section steel double enclosing purlin unit module 01 second section steel 42 and the second section steel double enclosing purlin unit module 02 second section steel 42 and the third section steel double enclosing purlin unit module 03 second section steel 42, the first section steel double enclosing purlin unit module 01 third section steel 43 and the second section steel double enclosing purlin unit module 02 third section steel 43 and the third section steel double enclosing purlin unit module 03 third section steel 43, the first section steel double enclosing purlin unit module 01 fourth section steel 44 and the second section steel double enclosing purlin unit module 02 fourth section steel 44 and the third section steel double enclosing purlin unit module 03 fourth section steel 44 are all connected by unit connecting piece in the same way, which will not be repeated here.

[0075] Step 5: the other end of the steel double enclosing purlin unit module is connected with the end of the support 11 through the support connecting piece.

[0076] Specifically, the support connecting plate 91 is welded on the fourth section steel 44 of the steel double enclosing purlin unit module. When the support 11 is a reinforced concrete support, the main reinforcement of the concrete support can be connected by welding bolt sleeves 92 on the support connecting plate 91. When the support 11 is a steel support, the steel support can be connected by welding bolts on the support connecting plate 91.

[0077] Both ends of the support 11 are connected with the enclosure wall 1 by the steel double enclosing purlin unit module in the same way, which will not be repeated here.

[0078] During the foundation pit construction process, when the support 11 needs to be removed, the steel double enclosing purlin unit module removal method is:

[0079] S1: connect the hoisting steel wire rope to each steel double enclosing purlin unit module, so that the hoisting equipment can hoist the steel double enclosing purlin unit module through the hoisting steel wire rope.

[0080] S2: remove the support 11.

[0081] Specifically, the connection between the bolt or bolt sleeve 92 and the support 11 is released to remove the support 11.

[0082] S3: remove the unit connecting piece to release the connection between the adjacent two groups of steel double enclosing purlin unit modules.

[0083] Specifically, the connecting piece 63 is loosened, and the connecting plate 62 is disassembled to release the connection between the adjacent two groups of steel double enclosing purlin unit modules.

[0084] S4: unbuckle the steel wire rope 10, and the steel double enclosing purlin unit module can be lifted and removed by the hoisting equipment.

[0085] The above description is only the description of the preferred embodiments of the present application, and is not any limitation on the scope of the present application. Any change and modification made by the person skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. A prefabricated double waler system with adjustable support axial force, characterized in that, include: The steel double waler unit module, positioning support, unit connector, support connector and support (11); the positioning support is fixedly installed on the enclosure wall (1), one end of the steel double waler unit module rests on the positioning support, and several sets of steel double waler unit modules are arranged sequentially along the length of the enclosure wall (1) relative to the wall surface through the positioning support; the other end of the steel double waler unit module is detachably connected to the end of the support (11) through the support connector, so that the support (11) is supported between the two opposite walls of the enclosure wall (1) through the steel double waler unit module; each two adjacent sets of steel waler unit modules are detachably connected through the unit connector to form a prefabricated double waler system.

2. The assembled double waler system with adjustable support axial force as described in claim 1, characterized in that, Each of the steel double waler unit modules includes a first double long steel component, a second double long steel component, a first double short steel component, a second double short steel component, and a jack (8); the first double long steel component, the first double short steel component, the second double long steel component, and the second double short steel component are connected end to end to form a steel waler frame; the jack (8) is installed inside the steel waler frame, and the jacking direction of the jack (8) is consistent with the axial direction of the support (11); the first double long steel component is placed on the positioning support, and the second double long steel component is detachably connected to the end of the support (11) through the support connector.

3. The assembled double waler system with adjustable support axial force as described in claim 2, characterized in that, The first double-long steel component includes a first steel section (41) and a second steel section (42), and the second double-long steel component includes a third steel section (43) and a fourth steel section (44); the first steel section (41), the second steel section (42), the third steel section (43) and the fourth steel section (44) have the same length; the first steel section (41) and the second steel section (42) are welded along the length direction to form a double steel structure, and the third steel section (43) and the fourth steel section (44) are welded along the length direction to form a double steel structure; the first double-short steel component, the second double-short steel component and the jack (8) are connected between the second steel section (42) and the third steel section (43), and the end of the support (11) is connected to the fourth steel section (44) through the support connector; the unit connector is connected between the steel web plates (61) of the first steel section (41), the second steel section (42), the third steel section (43) and the fourth steel section (44) of the two adjacent sets of steel double waler unit modules.

4. The assembled double waler system with adjustable support axial force as described in claim 3, characterized in that, The first double short steel assembly includes a first short steel (71) and a second short steel (72), and the second double short steel assembly includes a third short steel (73) and a fourth short steel (74); the first short steel (71), the second short steel (72), the third short steel (73) and the fourth short steel (74) have the same length and are detachably vertically connected between the second steel (42) and the third steel (43); One end of the jack (8) is detachably connected to the second steel section (42) via a first end plate (81), and the other end of the jack (8) is detachably connected to the third steel section (43) via a second end plate (82).

5. The assembled double waler system with adjustable support axial force as described in claim 2 or 3, characterized in that, The positioning support includes a positioning plate (2) and a corbel (3); the positioning plate (2) is installed on the wall surface of the enclosure wall (1), the corbel (3) is installed on the positioning plate (2), and the first double long steel component of the steel double waler unit module is placed on the corbel (3).

6. The assembled double waler system with adjustable support axial force as described in claim 2 or 3, characterized in that, The first double-long steel component is welded with a first ear plate (51) and a second ear plate (52). The first ear plate (51) and the second ear plate (52) are connected to the enclosure wall (1) by a steel wire rope (10). The first ear plate (51) is located in the middle of the first double-long steel component, that is, on the axial extension line of the support (11), and the second ear plate (52) is located at both ends of the first double-long steel component.

7. The assembled double waler system with adjustable support axial force as described in claim 3, characterized in that, When the support (11) is a steel support, the support connector includes a support connecting plate (91) and bolts. The support connecting plate (91) is welded to the fourth type of steel (44), and the bolts are welded to the support connecting plate (91) and connected to the steel support. When the support (11) is a reinforced concrete support, the support connector includes a support connecting plate (91) and a bolt sleeve (92). The support connecting plate (91) is welded to the fourth type steel (44), and the bolt sleeve (92) is welded to the support connecting plate (91). The main reinforcement of the reinforced concrete support is connected to the bolt sleeve (92).

8. The assembled double waler system with adjustable support axial force as described in claim 3, characterized in that, The unit connector includes a connecting plate (62) and a connector (63); two connecting plates (62) are respectively set on the top and bottom surfaces of the end of the steel web plate (61) of the first steel section (41) of the two adjacent sets of steel double waler unit modules, and the two connecting plates (62) and the steel web plate (61) of the adjacent first steel section (41) are connected and fixed by the connector (63); two connecting plates (62) are respectively set on the top and bottom surfaces of the end of the steel web plate (61) of the second steel section (42) of the two adjacent sets of steel double waler unit modules, and the two connecting plates (62) and the steel web plate (61) of the adjacent second steel section (42) are connected and fixed by the connector (63); The two connecting plates (62) are respectively set on the top and bottom surfaces of the end of the web plate (61) of the third steel (43) of the two adjacent steel double waler unit modules. The two connecting plates (62) and the web plate (61) of the adjacent third steel (43) are connected and fixed by the connecting plate (63). The two connecting plates (62) are respectively set on the top and bottom surfaces of the end of the web plate (61) of the fourth steel (44) of the two adjacent steel double waler unit modules. The two connecting plates (62) and the web plate (61) of the adjacent fourth steel (44) are connected and fixed by the connecting plate (63).

9. A construction method for a prefabricated double waler system with adjustable support axial force as described in claim 1, characterized in that, Includes the following steps: Step 1: Install positioning supports on the enclosure wall (1); Step 2: Fabricate the steel double waler unit modules; Step 3: Place one end of the steel double waler unit module on the positioning support and connect it to the enclosure wall (1); Step 4: Connect two adjacent sets of steel double waler unit modules using unit connectors; Step 5: Connect the other end of the steel double waler unit module to the end of the support (11) through the support connector.

10. The construction method as described in claim 9, characterized in that, The method for dismantling the aforementioned steel double waler unit module is as follows: S1: Connect the hoisting wire rope to each steel double waler unit module; S2: Remove the support (11); S3: Remove the unit connectors and disconnect the connection between two adjacent sets of steel double waler unit modules; S4: Untie the steel wire rope (10) and lift and transport the steel double waler unit module away using hoisting equipment.

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