A double-row steel sheet pile enclosure structure

Abstract

The present application provides a double-row steel sheet pile enclosure structure, comprising a first steel sheet pile wall and a second steel sheet pile wall arranged in parallel, a first reinforcement device being provided on the first steel sheet pile wall, a second reinforcement device being provided on the second steel sheet pile wall, a tie rod device being provided between the first steel sheet pile wall and the second steel sheet pile wall, the first reinforcement device and the second reinforcement device being fixedly connected to the tie rod device respectively to form an I-shaped double-row steel sheet pile enclosure structure, the tie rod device comprising a tie rod and an adjustment assembly assembled with the tie rod, the tie rod device adjusting the axial force of the tie rod through the adjustment assembly to adjust the spacing between the first steel sheet pile wall and the second steel sheet pile wall. The present application connects the front and rear rows of steel sheet pile walls through the reinforcement device and the tie rod device, ensuring that the steel sheet pile walls jointly resist lateral soil pressure, enhancing the overall rigidity of the structure, accurately adjusting the spacing between the front and rear rows by adjusting the axial force of the tie rod, improving the synchronization of the double-row steel sheet pile walls, and enhancing the overall support effect.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit engineering, and in particular to a double-row steel sheet pile retaining structure. Background Art

[0002] As a common retaining structure, double-row steel sheet piles are widely used in many fields, such as river bank protection, wharf breakwaters, bridge foundation cofferdams and temporary support of foundation pits. They have been recognized by the engineering community for their excellent support effect, efficient and convenient construction, and green and pollution-free application. They have considerable application prospects and practical value.

[0003] Conventional double-row steel sheet pile enclosure structures require welded steel sections or cast concrete beams to ensure the strength and integrity of the double-row steel sheet pile wall. However, in actual operation, the use of steel sections can lead to joints that become dislocated and deviate, weakening the steel connection. This in turn leads to uncoordinated deformation of the front and rear rows of piles, resulting in excessive deformation and displacement of the front row piles, making it difficult for the rear row piles to fully utilize their support performance, significantly reducing the safety and stability of the overall structure. Furthermore, the use of concrete beams can easily render the steel sheet piles unrecyclable, which is uneconomical and environmentally unfavorable, limiting the application of double-row steel sheet piles.

[0004] Based on this, it is urgent to propose a double-row steel sheet pile retaining structure to solve the limitations of existing technology. Summary of the Invention

[0005] The purpose of the present application is to provide a double-row steel sheet pile enclosure structure that can be flexibly disassembled and can accurately adjust the distance between the front and rear rows of steel sheet pile walls.

[0006] To achieve the above-mentioned objectives, the present application is implemented through the following technical solutions: a double-row steel sheet pile enclosure structure, comprising a first steel sheet pile wall and a second steel sheet pile wall arranged in parallel, a first reinforcement device being provided on the first steel sheet pile wall, a second reinforcement device being provided on the second steel sheet pile wall, a tie rod device being provided between the first steel sheet pile wall and the second steel sheet pile wall, the first reinforcement device and the second reinforcement device being fixedly connected to the tie rod device respectively to form an I-shaped double-row steel sheet pile enclosure structure, the tie rod device comprising a tie rod and an adjustment assembly assembled with the tie rod, the tie rod device adjusting the axial force of the tie rod through the adjustment assembly to adjust the distance between the first steel sheet pile wall and the second steel sheet pile wall.

[0007] Furthermore, the adjustment assembly is a detachably assembled adjustment sleeve, and the pull rod device includes a first pull rod, an adjustment sleeve and a second pull rod that are detachably connected in sequence; the first end of the first pull rod is assembled and connected to the first reinforcement device, and the second end of the first pull rod is provided with a first external thread that is adapted to be assembled with the adjustment sleeve; the first end of the second pull rod is assembled and connected to the second reinforcement device, and the second end of the second pull rod is provided with a second external thread that is adapted to be assembled with the adjustment sleeve.

[0008] Furthermore, the adjusting sleeve includes a rotating sleeve and a fixed sleeve, an axial force gauge is provided in the fixed sleeve, the fixed sleeve and the rotating sleeve are detachably connected by a screw provided in the fixed sleeve, and the inner wall of the rotating sleeve is provided with a first internal thread adapted to the first external thread and a second internal thread adapted to the screw.

[0009] Furthermore, at least two rotating rods are provided on the outer wall surface of the rotating sleeve and / or the fixed sleeve.

[0010] Furthermore, the axial force meter is fixed in the fixed sleeve by means of bolts, and a wire of the axial force meter passes through an opening on the fixed sleeve and extends out of the fixed sleeve.

[0011] Furthermore, the first reinforcement device is composed of a number of first purlins connected end to end, and the adjacent first purlins are fixed by first connecting channel steels inserted and overlapped therein through first bolts, and a first assembly hole is provided on the flange of the first purlin away from the first connecting channel steel, and the first pull rod is assembled with the first reinforcement device through the first assembly hole; the second reinforcement device is composed of a number of second purlins connected end to end, and the adjacent second purlins are fixed by second connecting channel steels inserted and overlapped therein through second bolts, and a second assembly hole is provided on the flange of the second purlin away from the second connecting channel steel, and the second pull rod is assembled with the second reinforcement device through the second assembly hole; the hole centers of the first assembly hole and the second assembly hole are located on the same straight line.

[0012] Furthermore, a plurality of first corbels are provided on the surface of the web of the first steel sheet pile wall to support the first reinforcement device, a plurality of second corbels are provided on the surface of the web of the second steel sheet pile wall to support the second reinforcement device, and a plurality of purlin support plates are provided at the first / second purlin gaps of the first reinforcement device and / or the second reinforcement device.

[0013] Furthermore, the distance between the first connecting channel steel of the first reinforcement device and / or the second connecting channel steel of the second reinforcement device and the nearest tie rod is 1 / 4 to 1 / 3 of the distance between adjacent tie rods located on both sides thereof.

[0014] Furthermore, the first pull rod passes through the first assembly hole and is assembled and fixed to the first reinforcement device through a first nut, and a first pad is provided between the first nut and the first assembly hole; the second pull rod passes through the second assembly hole and is assembled and fixed to the second reinforcement device through a second nut, and a second pad is provided between the second nut and the second assembly hole.

[0015] Furthermore, a first through hole for the first pull rod to pass through is provided at a position of the first steel sheet pile corresponding to the first assembly hole, and / or a second through hole for the second pull rod to pass through is provided at a position of the second steel sheet pile corresponding to the second assembly hole.

[0016] The present invention has the following beneficial technical effects: the double-row steel sheet pile wall and the reinforcement device are connected into a whole through a tie rod device, and the tie rod device adjusts the spacing between the double-row steel sheet pile walls by adjusting the axial force of the tie rod. The structure is simple and the support is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 A top view of an exemplary double-row pile enclosure structure of this application;

[0019] Figure 2 for Figure 1 A side view of the double-row pile enclosure structure shown;

[0020] Figure 3 for Figure 1 A front view of the assembly of the first steel sheet pile wall and the first reinforcement device is shown;

[0021] Figure 4 for Figure 1 A front view of the second steel sheet pile wall and the second reinforcement device assembled;

[0022] Figure 5 is a side view of an exemplary first perimeter purlin and first connecting channel steel / second perimeter purlin and second connecting channel steel;

[0023] Figure 6 A top view of an exemplary adjustment sleeve of the present application;

[0024] Figure 7 A side view of an exemplary adjustment sleeve of the present application;

[0025] Figure 8 A top view of another exemplary double-row pile enclosure structure of the present application;

[0026] Figure 9 This is a top view of another exemplary double-row pile enclosure structure of the present application.

[0027] Figure Number:

[0028] 100. Double-row steel sheet pile retaining structure

[0029] 1. First steel sheet pile wall 10, first steel sheet pile 11, first through hole

[0030] 2. First reinforcement device 20, first nut 21, first pad

[0031] 22. First external thread of the first pull rod 220

[0032] 23. First purlin

[0033] 231, first bolt 233, first fastening bolt

[0034] 234, first purlin support plate 235, first corbel

[0035] 24. First connecting channel steel 25. First assembly hole

[0036] 3. Second steel sheet pile wall 30, second steel sheet pile 31, second through hole

[0037] 4. Second reinforcement device 40, second nut 41, second pad

[0038] 42. Second pull rod 420. Second external thread

[0039] 43, second purlin 430, second connecting channel steel 431, second bolt

[0040] 432, second assembly hole 433, second fastening bolt

[0041] 434, second purlin support plate 435, second corbel 436, locking screw

[0042] 44. Adjusting sleeve 440, rotating sleeve 441 first rotating rod

[0043] 442, fixed sleeve 443, second rotating rod 444, screw

[0044] 445 axial force gauge 4451, bolt 4452, wire DETAILED DESCRIPTION

[0045] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present application.

[0046] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, the technical or scientific terms used in this application should have the usual meaning understood by people with ordinary skills in the field to which the invention belongs. The words "one" or "an" and the like used in this specification and claims do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "include" or "comprises" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "connected" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0047] As used in this specification and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0048] See also Figures 1 to 9 As shown, a double-row steel sheet pile enclosure structure 100 comprises a first steel sheet pile wall 1 and a second steel sheet pile wall 3 arranged in parallel. A first reinforcement device 2 is installed on the first steel sheet pile wall 1, and a second reinforcement device 4 is installed on the second steel sheet pile wall 3. A tie rod assembly is provided between the first and second steel sheet pile walls 1 and 3. The first and second reinforcement devices 2 and 4 are each fixedly connected to the tie rod assembly to form an I-shaped double-row steel sheet pile enclosure structure 100. The tie rod assembly includes tie rods and an adjustment assembly assembled with the tie rods. The tie rod assembly adjusts the axial force of the tie rods to adjust the spacing between the first and second steel sheet pile walls 1 and 3. In this way, the first and second steel sheet pile walls 1 and 3, along with the soil between the piles, form a portal-type enclosure structure with greater overall rigidity, effectively resisting lateral earth pressure and improving support effectiveness. The first steel sheet pile wall 1 of the present application is formed by assembling a plurality of first steel sheet piles 10 joined end to end, and the second steel sheet pile wall 3 is formed by assembling a plurality of second steel sheet piles 30 joined end to end. In the embodiment of the present application, the steel sheet piles used in the same steel sheet pile wall are made of a single integrally formed Larsen steel sheet pile.

[0049] Please refer to Figure 1 and Figure 8Specifically, the first reinforcement device 2 is secured to the web surface of the first steel sheet pile 10 via several groups of two first fastening bolts 233. The second reinforcement device 4 is secured to the web surface of the second steel sheet pile via several groups of two second fastening bolts 433. When the first and second reinforcement devices are located inside the first and second steel sheet pile walls, the outermost corresponding steel sheet piles are not only connected to the perimeter purlin via fastening bolts, but are also secured with locking screws 436, thereby enhancing the overall support effectiveness of the first and second reinforcement devices.

[0050] The adjustment assembly is a detachably assembled adjustment sleeve 44. The pull rod assembly comprises a first pull rod 22, an adjustment sleeve 44, and a second pull rod 42, which are sequentially detachably connected. The first end of the first pull rod 22 is assembled and connected to the first reinforcement device 2. The second end of the first pull rod 22 is provided with a first external thread 220, which is adapted for assembly with the adjustment sleeve 44. The first end of the second pull rod 42 is assembled and connected to the second reinforcement device 4, and the second end of the second pull rod 42 is provided with a second external thread 420, which is adapted for assembly with the adjustment sleeve 44.

[0051] The adjustment sleeve 44 includes a rotating sleeve 440 and a fixed sleeve 442. The fixed sleeve 442 houses an axial force gauge 445. The fixed sleeve 442 and the rotating sleeve 440 are detachably connected via a threaded screw 444 disposed within the fixed sleeve 442. The inner wall of the rotating sleeve 440 is provided with a first internal thread that mates with the first external thread 220 and a second internal thread that mates with the screw 444.

[0052] At least two rotating rods are provided on the outer wall surface of the rotating sleeve 440 and / or the fixed sleeve 442. The axial force gauge 445 is fixed in the fixed sleeve 442 by a bolt 4451, and the wire 4452 of the axial force gauge passes through the opening on the fixed sleeve and extends out of the fixed sleeve to communicate with the outside world. Specifically, the axial force gauge 445 is arranged inside the fixed sleeve 442 at one end near the second external thread 420. In an exemplary embodiment of the present application, four first rotating rods 441 are arranged at equal intervals on the outer wall surface of the rotating sleeve 440, and four second rotating rods 443 are arranged at equal intervals on the outer wall surface of the fixed sleeve 442. By sleeve-fitting the rod member on the second rotating rod 443 and rotating the fixed sleeve 442 to tighten it with the second pull rod 42, it is ensured that the end of the second external thread 420 of the second pull rod is in close contact with the axial force gauge 445. By rotating the rotating sleeve 440 by attaching a rod to the first rotating rod 441, the distance between the fixed sleeve 442 and the first tie rod 22 can be adjusted. In this way, while the rotating sleeve can flexibly adjust the spacing between the front and rear rows of piles, the axial force of the tie rod can be measured in real time using an axial force meter, allowing for more precise quantitative adjustment of the force applied to the tie rod, so that the tie rod tightens and connects the first and second steel sheet piles, transferring load and effectively controlling the deformation and displacement of the first and second steel sheet piles. Simultaneously, the adjusting sleeve first secures the end of the tie rod of the second steel sheet pile by tightening the fixed sleeve. Therefore, during actual construction, it is only necessary to directly rotate the rotating sleeve to connect it to the tie rod of the first steel sheet pile. This allows for adjustment of the spacing between the front and rear rows of piles while ensuring the reliability of the tie rod connection, facilitating flexible and simple construction and improving construction efficiency. Conventionally, the first steel sheet piles are located in the front row, and the second steel sheet piles are located in the back row.

[0053] The first reinforcement device 2 is composed of a number of first purlins 23 connected end to end, and the adjacent first purlins 23 are connected and fixed by first connecting channel steels 24 embedded and overlapped therein through first bolts 231. A first assembly hole 25 is provided on the flange of the part of the first purlin 23 away from the first connecting channel steel 24, and the first pull rod 22 is assembled with the first reinforcement device 2 through the first assembly hole 25; the second reinforcement device 4 is composed of a number of second purlins 43 connected end to end, and the adjacent second purlins 43 are connected and fixed by second connecting channel steels 430 embedded and overlapped therein through second bolts 431. A second assembly hole 432 is provided on the flange of the part of the second purlin 43 away from the second connecting channel steel 430, and the second pull rod 42 is assembled with the second reinforcement device 4 through the second assembly hole 432; the hole centers of the first assembly hole 25 and the second assembly hole 432 are located on the same straight line. As previously described, the plurality of tie rods of the double-row steel sheet pile enclosure structure 100 of the present application are spaced and arranged parallel to each other along the first steel sheet pile wall 1 and the second steel sheet pile wall 3. This ensures that the load of the steel sheet pile wall can be effectively transferred to the tie rods through the purlins, avoiding the direct connection of the tie rods to the steel sheet piles, which may cause local stress concentration and damage to the steel sheet piles.

[0054] Specifically, the first purlin and the first connecting channel steel used in the first reinforcement device and the second reinforcement device are channel steels of different specifications, and the cross-sectional size of the channel steel used in the first purlin is larger than the cross-sectional size of the channel steel of the first connecting channel steel. Each connecting channel steel of the first reinforcement device 2 is fixed to the web surface of the end of the adjacent first purlin 23 channel steel by a first bolt 231, thereby connecting two adjacent first purlins. The number of the first bolts used is adjusted according to different construction requirements. In this way, a purlin with a strong connection and high stability is formed, which can more effectively transfer the load borne by the steel sheet pile wall. In the embodiment of the present application, the second reinforcement device has the same assembly method and structure as the first reinforcement, which will not be repeated here.

[0055] The surface of the web of the first steel sheet pile is provided with a plurality of first corbels 235 to support the first reinforcement device 2. The gaps of the first purlin 23 of the first reinforcement device 2 are provided with a plurality of first purlin support plates 234. The first purlin support plates 234 can bear part of the deadweight of the first reinforcement device 2 to prevent the channel steel from crushing the tie rod. By providing the first corbels 235, when the first tie rod 22 is subjected to force to squeeze the first purlin 23 channel steel, the connection bolts can be used to limit the displacement of the first purlin 23 channel steel to a certain extent, thereby reducing the stability of the purlin. In addition, the first reinforcement device 2 allows the first steel sheet piles that are interlocked and connected to each other to be firmly locked into a whole, further improving the integrity of the first steel sheet pile wall 1. When the first steel sheet pile wall 1 is subjected to lateral soil pressure, the deformation and displacement of the first steel sheet piles are effectively coordinated, and the first steel sheet piles are kept in the same straight line to bear the force together.

[0056] The web surface of the second steel sheet pile 30 is provided with a plurality of second corbels 435 to support the second reinforcement device 4, and the gaps of the second purlin 43 of the second reinforcement device 4 are provided with a plurality of second purlin 43 support plates. By providing the second corbels 435 and the second purlin 43 support plates, part of the deadweight of the second reinforcement device 4 can be borne, preventing the channel steel from crushing the second tie rod 42. When the second steel sheet pile wall 3 is subjected to lateral soil pressure and the load transmitted by the tie rod, the deformation displacement of the second steel sheet pile 30 is effectively coordinated, and the second steel sheet pile 30 is kept in the same straight line to bear the force together, thereby improving the support performance; at the same time, the additional fastening bolts can ensure that the purlin and the steel sheet pile wall do not separate, ensuring that the load can be completely transmitted to the steel sheet pile wall through the purlin, thereby enhancing the integrity of the double-row steel sheet pile enclosure structure.

[0057] The distance between the first connecting channel of the first reinforcement device and / or the second connecting channel of the second reinforcement device and the nearest tie rod is 1 / 4 to 1 / 3 of the spacing between adjacent tie rods located on either side. The first / second connecting channel is positioned closest to the minimum bending moment of the purlin to ensure the safety and stability of its connection to adjacent purlin channels.

[0058] The first tie rod 22 passes through the first assembly hole 25 and is assembled and fixed to the first reinforcement device 2 using a first nut 20. A first pad 21 is provided between the first nut 20 and the first assembly hole 25. The second tie rod 42 passes through the second assembly hole 432 and is assembled and fixed to the second reinforcement device 4 using a second nut 40. A second pad 41 is provided between the second nut 40 and the second assembly hole 432. The provision of the first and second pads eliminates the need for additional fixing bolts at the contact point between the purlin and the steel sheet piles, ensuring that the load of the steel sheet pile wall can be effectively transferred to the tie rods through the purlins. This reduces damage caused by fixing bolts and steel sheet pile holes, and prevents damage to the steel sheet piles caused by local stress concentration due to direct connection of the tie rods to the steel sheet piles.

[0059] In an exemplary embodiment, Figure 9 As shown, the first steel sheet pile 10 has a first through-hole 11 for the first tie rod 22 to pass through at a position corresponding to the first assembly hole 25, and / or the second steel sheet pile 30 has a second through-hole 31 for the second tie rod 42 to pass through at a position corresponding to the second assembly hole 432. In actual construction applications, the first reinforcement device 2 and the second reinforcement device 4 will be installed on different sides of the first steel sheet pile wall 1 and the second steel sheet pile wall 3 to form different support structures.

[0060] See also Figure 8As shown, as an exemplary embodiment, a double-row steel sheet pile enclosure structure 100 includes a first steel sheet pile wall 1, a first reinforcement device 2 assembled with the first steel sheet pile wall 1, a second steel sheet pile wall 3, and a second reinforcement device 4 assembled with the second steel sheet pile wall 3. Specifically, the first reinforcement device is positioned behind the first steel sheet pile wall, i.e., between the first and second steel sheet pile walls; the second reinforcement device is positioned in front of the second steel sheet pile wall. Thus, the construction space for both the first and second reinforcement devices is located between the steel sheet pile walls. Only a portion of the soil between the piles needs to be excavated to complete the installation and removal of the reinforcement devices. This saves construction space within the foundation pit and helps protect the first reinforcement device from structural damage caused by construction within the pit.

[0061] See also Figure 9 As shown in the figure, as an exemplary embodiment, the first steel sheet pile wall 1, first reinforcement device 2, second steel sheet pile wall 3, and second reinforcement device 4 in this embodiment have the same structural arrangement as the previous embodiment and will not be repeated here. The difference in this embodiment is that the first reinforcement device 2 is located in front of the first steel sheet pile wall 1, and the second reinforcement device 4 is located behind the second steel sheet pile wall 3. As a result, when the first steel sheet pile resists lateral earth pressure and transfers the load to the second steel sheet pile via the first tie rod, the second reinforcement device is compressed by the second nut, second pad, and second tie rod. Therefore, no fixing bolts are required at the contact point between the second reinforcement device and the second steel sheet pile wall, which reduces steel sheet pile opening loss and improves economic efficiency.

[0062] This application is illustrated by several specific embodiments. It should be understood by those skilled in the art that various modifications and equivalent substitutions may be made to this application without departing from the scope of this application. In addition, various modifications may be made to this application for specific circumstances or specific conditions without departing from the scope of this application. Therefore, this application is not limited to the specific embodiments disclosed, but should include all implementation methods falling within the scope of the claims of this application.

Claims

1. A double-row steel sheet pile enclosure structure, comprising a first steel sheet pile wall and a second steel sheet pile wall arranged in parallel, characterized in that: A first reinforcement device is provided on the first steel sheet pile wall, a second reinforcement device is provided on the second steel sheet pile wall, a pull rod device is provided between the first steel sheet pile wall and the second steel sheet pile wall, the first reinforcement device and the second reinforcement device are respectively fixedly connected to the pull rod device to form an I-shaped double-row steel sheet pile enclosure structure, the pull rod device includes a pull rod and an adjustment component assembled with the pull rod, the pull rod device adjusts the axial force of the pull rod through the adjustment component to adjust the distance between the first steel sheet pile wall and the second steel sheet pile wall, the adjustment component is a detachable assembled adjustment sleeve, the pull rod device includes a first pull rod, an adjustment component that are detachably connected in sequence Sleeve and second pull rod; the first end of the first pull rod is assembled and connected with the first reinforcement device, and the second end of the first pull rod is provided with a first external thread adapted to be assembled with the adjustment sleeve; the first end of the second pull rod is assembled with the second reinforcement device, and the second end of the second pull rod is provided with a second external thread adapted to be assembled with the adjustment sleeve, the adjustment sleeve includes a rotating sleeve and a fixed sleeve, an axial force gauge is provided in the fixed sleeve, the fixed sleeve and the rotating sleeve are detachably connected by a screw provided in the fixed sleeve, and the inner wall of the rotating sleeve is provided with a first internal thread adapted to the first external thread and a second internal thread adapted to the screw.

2. The double-row steel sheet pile enclosure structure according to claim 1 is characterized in that: At least two rotating rods are provided on the outer wall surface of the rotating sleeve and / or the fixed sleeve.

3. The double-row steel sheet pile enclosure structure according to claim 2, characterized in that: The axial force meter is fixed in the fixing sleeve by means of bolts, and a wire of the axial force meter passes through an opening on the fixing sleeve and extends out of the fixing sleeve.

4. The double-row steel sheet pile enclosure structure according to any one of claims 1 to 3, characterized in that: The first reinforcement device is composed of a number of first purlins connected end to end, and the adjacent first purlins are fixed by first connecting channel steels that are embedded and overlapped therein through first bolts. A first assembly hole is provided on the flange of the first purlin away from the first connecting channel steel, and the first pull rod is assembled with the first reinforcement device through the first assembly hole; the second reinforcement device is composed of a number of second purlins connected end to end, and the adjacent second purlins are fixed by second connecting channel steels that are embedded and overlapped therein through second bolts. A second assembly hole is provided on the flange of the second purlin away from the second connecting channel steel, and the second pull rod is assembled with the second reinforcement device through the second assembly hole; the hole centers of the first assembly hole and the second assembly hole are located on the same straight line.

5. The double-row steel sheet pile enclosure structure according to claim 4 is characterized in that: Several first corbels are provided on the surface of the web of the first steel sheet pile wall to support the first reinforcement device, and several second corbels are provided on the surface of the web of the second steel sheet pile wall to support the second reinforcement device. Several purlin support plates are provided in the first / second purlin gaps of the first reinforcement device and / or the second reinforcement device.

6. The double-row steel sheet pile enclosure structure according to claim 5, characterized in that: The distance between the first connecting channel steel of the first reinforcement device and / or the second connecting channel steel of the second reinforcement device and the nearest tie rod is 1 / 4 to 1 / 3 of the spacing between adjacent tie rods located on both sides thereof.

7. The double-row steel sheet pile enclosure structure according to claim 5, characterized in that: The first pull rod passes through the first assembly hole and is assembled and fixed to the first reinforcement device through a first nut, and a first pad is provided between the first nut and the first assembly hole; the second pull rod passes through the second assembly hole and is assembled and fixed to the second reinforcement device through a second nut, and a second pad is provided between the second nut and the second assembly hole.

8. The double-row steel sheet pile enclosure structure according to any one of claims 5 to 7, characterized in that: A first through hole for the first tie rod to pass through is provided at a position of the first steel sheet pile corresponding to the first assembly hole, and / or a second through hole for the second tie rod to pass through is provided at a position of the second steel sheet pile corresponding to the second assembly hole.

Images