Multi-arch steel sheet pile supporting structure

Abstract

The utility model relates to a multi-ganged arch steel sheet pile supporting structure which comprises a plurality of different-direction ganged arch groove piles, same-direction ganged arch groove piles and arched steel sheet piles, and the arched steel sheet piles are embedded, fixed and spliced through the different-direction ganged arch groove piles and the same-direction ganged arch groove piles. The arched steel sheet pile comprises a fixed pile and an adjusting pile, the adjusting pile is slidably mounted in the fixed pile, notches are formed in the two sides of the adjusting pile, and convex teeth are fixedly mounted on the inner walls of the two notches. The multi-arch steel sheet pile supporting structure is formed by splicing large arches and small arches, the bending strength and the impact strength of the multi-arch steel sheet pile supporting structure can be improved by means of the multi-arch form of the multi-arch steel sheet pile supporting structure, and therefore the stability and the disturbance resistance of the supporting structure are improved; and in addition, the multi-arch steel sheet pile supporting structure has double water stopping and locking effects through the mode that the incongruous arch groove piles, the same-direction arch groove piles and the arch steel sheet piles are spliced in a matched mode.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit engineering, in particular to a multi - arch steel sheet pile support structure. Background Technique

[0002] With the acceleration of China's urbanization process, foundation pit operations are inevitably required in urban new construction and renovation projects. For foundation pit projects with a excavation depth exceeding 3m, a large plane size, and tight construction land, if retaining construction methods such as cement mixing piles and SMW method piles are used, although the safety and stability of the foundation pit can be ensured, the construction cost is relatively high, the construction machinery occupies too much land, and the construction period is relatively long; while the traditional construction technology of Larsen steel sheet piles has the functions of retaining soil and water isolation, and has a simple form, convenient operation, and is green and environmentally friendly.

[0003] However, due to its weak stiffness, lack of good bending resistance and impact resistance, it is often limited by the plane size of the foundation pit and the surrounding static and dynamic loads; therefore, how to further improve the steel sheet pile support structure system to make it have a wider application range and better bending and impact resistance performance will be particularly important, so a multi - arch steel sheet pile support structure is proposed to solve the above problems. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a multi - arch steel sheet pile support structure, which has the advantages of increasing its bending and impact strength, etc., and solves the problems that the traditional construction technology of Larsen steel sheet piles has weak stiffness, lack of good bending resistance and impact resistance, and is often limited by the plane size of the foundation pit and the surrounding static and dynamic loads.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: A multi - arch steel sheet pile support structure includes a number of differently - oriented arch - groove piles, same - oriented arch - groove piles and arched steel sheet piles, and the arched steel sheet piles are embedded and spliced through the differently - oriented arch - groove piles and the same - oriented arch - groove piles;

[0008] The arched steel sheet pile includes a fixed pile and an adjusting pile. The adjusting pile is slidably installed inside the fixed pile. Both sides of the adjusting pile are provided with slots, and convex teeth are fixedly installed on the inner walls of the two slots. Receiving grooves are provided on the inner walls of both sides of the same - oriented arch - groove pile, and support rods are fixedly installed on the inner walls of the two receiving grooves. Rotatingly installed on the outer surfaces of the two support rods are clamping rods adapted to the convex teeth, and springs are fixedly installed between the inner walls of the two receiving grooves and the side walls of the clamping rods.

[0009] Preferably: The arched steel sheet pile is in an outward - convex circular arc shape, and straight embedded feet are provided at both ends.

[0010] Preferably, the co-directional connected-arch groove pile includes a stiffening arc cap portion and a locking portion, and the stiffening arc cap portion and the locking portion are fully welded on both sides.

[0011] Preferably, the stiffening arc cap portion is convex outward, and the two side flanges are spliced and fitted with the outer edge of the arched steel sheet pile. The locking portion is provided with two grooves, and the sizes of the two grooves are slightly larger than the straight embedded feet of the arched steel sheet pile.

[0012] Preferably, the arc length of the stiffening arc cap portion is 0.5 times the arc length of the arched steel sheet pile.

[0013] Preferably, a plurality of locking holes are formed inside the adjusting pile, and a locking rod adapted to the locking holes is threadedly connected to the fixing pile.

[0014] Beneficial effects

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] 1. The multi-connected-arch steel sheet pile supporting structure is formed by splicing a "large arch + small arch". It can rely on its multi-connected-arch form to increase its bending resistance and impact resistance, thereby improving the stability and anti-disturbance ability of the supporting structure; and through the form of fitting and splicing between the opposite-connected-arch groove pile, the co-directional connected-arch groove pile and the arched steel sheet pile, the multi-connected-arch steel sheet pile supporting structure has a double water-stop and locking effect.

[0017] 2. The multi-connected-arch steel sheet pile supporting structure, by setting the arched steel sheet pile as a structure with adjustable height, can not only adjust the supporting height on-site according to the actual height of the foundation pit, but also this flexible adjustment method reduces the impact on the overall project progress. Description of the drawings

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic structural diagram of the opposite-connected-arch groove pile and the co-directional connected-arch groove pile of the present invention;

[0020] Figure 3 is a cross-sectional view of the arched steel sheet pile of the present invention;

[0021] Figure 4 is the present invention Figure 3 The enlarged view of the structure at A in.

[0022] In the figure: 1. Opposite-direction multi-arch grooved pile; 2. Same-direction multi-arch grooved pile; 21. Stiffening arc cap part; 22. Locking part; 3. Arch-shaped steel sheet pile; 301. Fixed pile; 302. Adjusting pile; 303. Groove opening; 304. Convex tooth; 305. Accommodating groove; 306. Support rod; 307. Locking rod; 308. Spring; 4. Locking hole; 5. Locking bar. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-4 , a multi-arch steel sheet pile support structure in this embodiment includes a plurality of opposite-direction multi-arch grooved piles 1, same-direction multi-arch grooved piles 2 and arch-shaped steel sheet piles 3, and the arch-shaped steel sheet piles 3 are fixedly spliced through the opposite-direction multi-arch grooved piles 1 and the same-direction multi-arch grooved piles 2.

[0025] Embodiment 1: The same-direction multi-arch grooved pile 2 includes a stiffening arc cap part 21 and a locking part 22. The stiffening arc cap part 21 and the locking part 22 are full-welded on both sides. The stiffening arc cap part 21 is convex, and the outer edges of both sides are spliced and fitted with the outer edge of the arch-shaped steel sheet pile 3. The locking part 22 is provided with two grooves, and the sizes of the two grooves are slightly larger than the straight fixing feet of the arch-shaped steel sheet pile 3.

[0026] During installation, follow the following assembly sequence: opposite-direction multi-arch grooved pile 1 → arch-shaped steel sheet pile 3 → same-direction multi-arch grooved pile 2 → arch-shaped steel sheet pile 3.

[0027] First, position and place the opposite-direction multi-arch grooved pile 1 at the predetermined position; then embed the arch-shaped steel sheet pile 3 into the double grooves of the opposite-direction multi-arch grooved pile 1, splice the same-direction multi-arch grooved pile 2 with the already installed arch-shaped steel sheet pile 3. The convex shape of the stiffening arc cap part 21 fits with the outer edge of the arch-shaped steel sheet pile 3, and the double grooves of the locking part 22 are used to fix the arch-shaped steel sheet pile 3 on the other side. According to the above operations, embed the arch-shaped steel sheet pile 3 into the grooves of the locking part 22 of the same-direction multi-arch grooved pile 2 again to complete the installation of the entire support structure.

[0028] It is assembled by "big arch + small arch", and can rely on its own multi-arch form to increase its bending resistance and impact resistance, thereby improving the stability and anti-disturbance of the support structure; and, through the form of fitting and splicing between the opposite-direction multi-arch grooved pile 1, the same-direction multi-arch grooved pile 2 and the arch-shaped steel sheet pile 3, the multi-arch steel sheet pile support structure has a double water-stop and locking effect.

[0029] After the structure construction in the foundation pit is completed, professional equipment is used to pull out and recycle the reverse-connected arch groove pile 1, the arched steel sheet pile 3, and the same-direction-connected arch groove pile 2 in sequence.

[0030] Embodiment 2: The arched steel sheet pile 3 includes a fixed pile 301 and an adjusting pile 302. The adjusting pile 302 is slidably installed inside the fixed pile 301. Both sides of the adjusting pile 302 are provided with notches 303, and convex teeth 304 are fixedly installed on the inner walls of the two notches 303. Accommodating grooves 305 are provided on the inner walls of both sides of the same-direction-connected arch groove pile 2, and support rods 306 are fixedly installed on the inner walls of the two accommodating grooves 305. Clamping rods 307 adapted to the convex teeth 304 are rotatably installed on the outer surfaces of the two support rods 306, and springs 308 are fixedly installed between the inner walls of the two accommodating grooves 305 and the side walls of the clamping rods 307.

[0031] When adjusting the height of the arched steel sheet pile 3, first pull up the adjusting pile 302. During the upward movement of the adjusting pile 302, the convex teeth 304 on both sides are driven to move upward. During the upward movement of the convex teeth 304, the clamping rods 307 are squeezed, so that the clamping rods 307 rotate on the support rods 306 in the direction close to the springs 308. At this time, the springs 308 are compressed, and the clamping rods 307 leave the convex teeth 304 to release the limit on the adjusting pile 302. Until the arched steel sheet pile 3 is adjusted to the appropriate position, stop pulling the adjusting pile 302, and the springs 308 expand to drive the clamping rods 307 to engage with the convex teeth 304 to limit the adjusting pile 302.

[0032] The adjustment is flexible and convenient, reducing the time consumed during adjustment and improving the project progress.

[0033] Embodiment 3: A plurality of locking holes 4 are provided inside the adjusting pile 302, and a locking rod 5 adapted to the locking holes 4 is threadedly connected to the fixed pile 301.

[0034] With the cooperation of the locking holes 4 and the locking rods 5, the locking rods 5 are screwed into the corresponding locking holes 4 to further limit the height of the adjusting pile 302, ensuring that the adjusting pile 302 will not move in position after being adjusted to the required height, and improving the stability during support.

[0035] In summary, it is formed by splicing "large arch + small arch", and can rely on its multi-connected arch form to increase its bending resistance and impact resistance, thereby improving the stability and anti-disturbance ability of the support structure; and through the form of fitting and splicing between the reverse-connected arch groove pile 1, the same-direction-connected arch groove pile 2 and the arched steel sheet pile 3, the multi-connected arch steel sheet pile support structure has a dual water-stop and locking effect.

[0036] Furthermore, by setting the arched steel sheet pile 3 as a height-adjustable structure, not only can the support height be adjusted on-site according to the actual height of the foundation pit, but also this flexible adjustment method reduces the impact on the overall project progress.

[0037] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-connected arch steel sheet pile retaining structure, characterized in that: It includes a number of reverse-connected arch groove piles (1), forward-connected arch groove piles (2) and arched steel sheet piles (3), and the arched steel sheet piles (3) are embedded and spliced through the reverse-connected arch groove piles (1) and forward-connected arch groove piles (2). The arched steel sheet pile (3) includes a fixed pile (301) and an adjusting pile (302). The adjusting pile (302) is slidably installed inside the fixed pile (301). Grooves (303) are opened on both sides of the adjusting pile (302). Convex teeth (304) are fixedly installed on the inner walls of the two grooves (303). Receiving grooves (305) are opened on the inner walls of both sides of the forward-connected arch groove pile (2). Support rods (306) are fixedly installed on the inner walls of the two receiving grooves (305). Clamping rods (307) adapted to the convex teeth (304) are rotatably installed on the outer surfaces of the two support rods (306). Springs (308) are fixedly installed between the inner walls of the two receiving grooves (305) and the side walls of the clamping rods (307).

2. The multi-connected arch steel sheet pile retaining structure according to claim 1, wherein: The arched steel sheet pile (3) is in the shape of an outwardly convex circular arc, and straight embedded feet are provided at both ends.

3. The multi-connected arch steel sheet pile support structure according to claim 2, characterized in that: The forward-connected arch groove pile (2) includes a stiffening arc cap part (21) and a locking part (22), and the stiffening arc cap part (21) and the locking part (22) are full-welded bilaterally.

4. A multi-connected arch steel sheet pile retaining structure according to claim 3, characterized in that: The stiffening arc cap part (21) is outwardly convex, and the wing edges on both sides are spliced and fitted with the outer edge of the arched steel sheet pile (3). The locking part (22) is provided with two grooves, and the sizes of the two grooves are slightly larger than the straight embedded feet of the arched steel sheet pile (3).

5. A multi - arch steel sheet pile support structure according to claim 4, characterized in that: The arc length of the stiffening arc cap part (21) is 0.5 times the arc length of the arched steel sheet pile (3).

6. The multi - connected arch steel sheet pile retaining structure according to claim 1, characterized in that: A plurality of locking holes (4) are opened inside the adjusting pile (302), and a locking rod (5) adapted to the locking holes (4) is threadedly connected to the fixed pile (301).

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