Light sheet pile enclosure structure
Through the light sheet pile enclosure structure, the crown beam is used to connect anti-sliding piles and prestressed anchor cables, the problems of low construction efficiency, poor stability and insufficient economics of the existing anti-sliding pile structure are solved, and the effect of rapid installation and disassembly is achieved.
Patent Information
- Application Number
- CN202422098647.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing anti-slip pile structures have shortcomings in construction efficiency, stability and economy, especially the problems of long construction period of rectangular anti-slip piles, weak anti-slip piles, and high requirements for anchoring conditions for prestressed cables.
The lightweight sheet pile enclosure structure is adopted, including anti-sliding piles, crown beams, baffles and prestressed anchor cables. Anti-sliding piles are installed by crawler lifting and vibrating hammers. The anti-sliding piles are connected by crown beams. The prestressed anchor cables are anchored in the soil. The baffle can be detached and installed, with a simple structure and can be quickly disassembled.
It improves the stability and anti-slip capacity of the enclosure structure, has fast construction speed and good economicality, meets the requirements of quick installation and dismantling, and adapts to different soil quality conditions.
Smart Images
Figure CN223074755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of retaining and protecting structures, and particularly relates to a light sheet pile retaining structure. Background Technique
[0002] In the treatment of landslides, anti-slide piles are widely used. The common types of anti-slide pile structural forms are mainly as follows:
[0003] One is a rectangular anti-slide pile, which has a good anti-slide effect. However, in actual construction, due to its large size, the rectangular anti-slide pile often can only be constructed by manual excavation, which leads to a long construction period; the construction method of manual excavation makes the construction conditions of the rectangular anti-slide pile relatively poor, with not only a large workload but also the need to face complex underground geological conditions, increasing the construction difficulty and risk.
[0004] One is a circular anti-slide pile, which uses a mechanical drilling machine for excavation and hole formation, greatly improving the hole formation efficiency and ensuring the construction safety. However, under the same conditions, compared with the rectangular anti-slide pile, the circular anti-slide pile has a smaller self-weight and is prone to slip in the soil mass, so its anti-slide property is weak; the cross-sectional shape of the circular anti-slide pile results in a poor soil arch effect, and the soil between the piles is easy to extrude and peel off, leading to a decrease in the stability of the soil around the pile, and further affecting the stability of the entire anti-slide pile structure; the circular anti-slide pile has a poor supporting effect on the baffle, and additional structures need to be taken to reinforce the baffle, resulting in poor economy.
[0005] One is a prestressed cable anti-slide pile, which improves the landslide stability by applying prestress, changing the stress state of the cantilever and the thrust mechanism of simply relying on the lateral foundation reaction force of the pile to resist the landslide thrust. However, the cable anchorage section of the prestressed cable anti-slide pile must be anchored in relatively dense soil mass or relatively intact rock mass. Therefore, certain anchorage conditions of the rock and soil body are required, and often a relatively deep anchorage length is needed. For landslide bodies that do not have these conditions, the prestressed cable anti-slide pile may not be applicable. Content of the Utility Model
[0006] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the utility model is to provide a light sheet pile retaining structure, which can improve the stability of the entire retaining structure, enhance the anti-slide ability, and has a simple structure, convenient installation and disassembly.
[0007] In order to achieve the above purpose, the utility model is realized by the following technical solutions: A light sheet pile retaining structure, comprising:
[0008] Anti-slide piles, including a placement end inserted into the soil body and an exposed end outside the soil body, and multiple groups of the anti-slide piles are arranged at intervals in a straight line;
[0009] A capping beam for connecting the exposed ends of the anti-slide piles on the same straight line into one body;
[0010] A baffle detachably installed between the exposed ends of two adjacent anti-slide piles; and
[0011] A prestressed anchor cable, with one end connected to the exposed end and the other end anchored in the soil body.
[0012] Furthermore, the top end of the anti-slide pile is exposed outside the capping beam.
[0013] Furthermore, the anti-slide pile is a round steel column or an I-shaped steel column, and two groups of rib plates are arranged pairwise opposite on the left and right side walls of the anti-slide pile, and a limiting groove is formed between the two rib plates on the same side.
[0014] Furthermore, the prestressed anchor cable includes a cable and a steel pipe with holes, an installation hole is provided in the exposed end, the head end of the cable can be anchored with the installation hole, the steel pipe with holes is sleeved on the tail end of the cable, the steel pipe with holes is divided into a tensioning section and a grouting and anchoring section, the tensioning section is located on the side close to the anti-slide pile, and a plurality of grouting holes communicating with its inner cavity are provided on the grouting and anchoring section, and the grouting injected into the steel pipe with holes can flow out through the grouting holes.
[0015] Furthermore, the installation hole penetrates through the round steel column along the radial direction of the round steel column, the cable passes through the installation hole and is anchored to the round steel column through a second anchor.
[0016] Furthermore, two connecting cables are provided at the end of the cable, the installation holes are provided on the two flange plates of the I-shaped steel column, the two connecting cables respectively pass through the two installation holes and are anchored to the corresponding flange plates through a third anchor.
[0017] Furthermore, a pile cap sleeve is sleeved on the top end of the anti-slide pile, and the pile cap sleeve is located between the contact surface of the capping beam and the anti-slide pile.
[0018] Furthermore, the inner wall of the pile cap sleeve is smeared with grease.
[0019] Furthermore, a backing plate is also included, and the backing plate is padded between the contact surface of the baffle and the capping beam.
[0020] Furthermore, the backing plate is in an inverted U shape and covers the top of the baffle.
[0021] The beneficial effects of the present utility model:
[0022] During installation, first, by using the method of lifting and driving with a crawler crane and a vibratory hammer, the inserted end of the anti-slide pile is vertically installed in the soil body. For hard rock formations, the method of drilling and replacing the filling and then driving in can be adopted.
[0023] An end of a prestressed anchor cable is anchored in the soil body, and the other end is connected to the anti-slide pile. Then, baffles are installed between two adjacent anti-slide piles in sequence. After the installation of the baffles is completed, finally, a concrete capping beam is poured on the top of the anti-slide pile. Thus, the installation of the light sheet pile retaining structure can be completed.
[0024] After the retaining structure is used up, it can be demolished in the order of demolishing the capping beam → removing the baffle → pulling out the steel section anti-slide pile.
[0025] By adopting the above light sheet pile retaining structure, components such as anti-slide piles, baffles, and prestressed anchor cables can all be made into prefabricated components, which have strong versatility, fast construction speed, and good economy. In this structure, the anti-slide piles are connected through the capping beam, which can improve the stability of the entire retaining structure. At the same time, the baffle can transfer the bending moment to the anti-slide pile in the horizontal direction, and at the same time meet the requirements of fast installation and fast demolition of the entire assembled retaining structure. Brief Description of the Drawings
[0026] In order to more clearly illustrate the specific embodiments of the present utility model, the drawings required for use in the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts do not necessarily be drawn according to the actual ratio.
[0027] Figure 1 Schematic diagram of a light sheet pile retaining structure provided by an embodiment of the present utility model (Figure a is the front view and Figure b is the side view);
[0028] Figure 2 For Figure 1 Schematic diagram of the connection between the anchor cable and the round steel column in a light sheet pile retaining structure shown;
[0029] Figure 3 For Figure 1 Schematic diagram of the connection between the anchor cable and the I-shaped steel column in a light sheet pile retaining structure shown;
[0030] Figure 4 For Figure 1 Schematic diagram of the prestressed anchor cable in a light sheet pile retaining structure shown;
[0031] Figure 5 Schematic diagram of a pile cap sleeve arranged on the top of the anti-slide pile in a light sheet pile retaining structure provided by an embodiment of the present utility model (Figure a is the schematic diagram of the pile cap sleeve arranged on the round steel column and Figure b is the schematic diagram of the I-shaped steel column);
[0032] Figure 6 Schematic diagram of a backing plate installed on the baffle in a light sheet pile retaining structure provided by an embodiment of the present utility model;
[0033] Reference Signs:
[0034] 100, anti-slide pile; 110, rib plate; 120, limit groove; 200, baffle; 300, capping beam; 400, prestressed anchor cable; 410, anchor cable; 420, steel pipe with holes; 411, connecting cable; 500, pile cap casing; 600, backing plate. Detailed implementation manners
[0035] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.
[0036] Please refer to Figures 1 to 6 , the present utility model provides a lightweight sheet pile retaining structure, including an anti-slide pile 100, a baffle 200, a capping beam 300 and a prestressed anchor cable 400.
[0037] Specifically, the anti-slide pile 100 is a steel section. There are multiple groups of anti-slide piles 100, and multiple groups of anti-slide piles 100 are arranged at intervals in a straight line. The insertion end of the anti-slide pile 100 inserted into the soil and the exposed end outside the soil. In specific implementation, the anti-slide pile 100 can be a round steel column or an I-shaped steel column.
[0038] A baffle 200 is detachably installed between the exposed ends of every two adjacent anti-slide piles 100. The capping beam 300 is used to connect the exposed ends of the anti-slide piles 100 on the same straight line into one body. In specific implementation, when the capping beam 300 is installed on the anti-slide pile 100, the top end of the anti-slide pile 100 should be exposed outside the capping beam 300, that is, the top of the anti-slide pile 100 extends out of the capping beam 300, and the extension length is generally selected to be 35 - 50 cm, which is convenient for pulling out the anti-slide pile 100.
[0039] There are multiple prestressed anchor cables 400. One end of each prestressed anchor cable 400 is connected to the exposed end, and the other end is anchored in the soil body and anchored in the soil body.
[0040] During installation, first, by using the method of lifting and driving with a crawler crane and a vibrating hammer, the insertion end of the anti-slide pile 100 is vertically installed in the soil body. For hard rock formations, the method of drilling and replacing the filling and then driving in can be adopted.
[0041] One end of the prestressed anchor cable 400 is anchored in the soil body, and the other end is connected to the anti-slide pile 100. Then, the baffle 200 is installed between two adjacent anti-slide piles 100 in sequence. After the installation of the baffle 200 is completed, finally, the concrete capping beam 300 is poured on the top of the anti-slide pile 100. Then, the installation of the lightweight sheet pile retaining structure can be completed.
[0042] After the use of the retaining structure is completed, it can be demolished in the order of demolishing the capping beam 300 → removing the baffle 200 → pulling out the steel section anti-slide pile 100.
[0043] With the above light sheet pile retaining structure, anti-slide piles 100, baffles 200, prestressed anchor cables 400, etc. can all be made into prefabricated components, which have strong versatility, fast construction speed and good economy. In this structure, the anti-slide piles 100 are connected by a capping beam 300, which can improve the stability of the entire retaining structure. At the same time, the baffle 200 can transfer the bending moment to the anti-slide pile 100 in the horizontal direction, and at the same time meet the requirements of quick installation and disassembly of the entire assembled retaining structure.
[0044] In this embodiment, the anti-slide pile 100 is a round steel column or an I-shaped steel column. Two groups of rib plates 110 are arranged in pairs on the left and right side walls of the anti-slide pile 100, and a limiting groove 120 is formed between the two rib plates 110 on the same side. The edge of the baffle 200 can be slidably clamped in the limiting groove 120. When the anti-slide pile 100 is a round steel column, the rib plates 110 are directly arranged on the side wall of the round steel column. When the anti-slide pile 100 is an I-shaped steel column, the four rib plates 110 are respectively arranged in the four included angles formed by the I-shaped web and the two flange plates. Through the limitation of the limiting groove 120, the baffle 200 can transfer the bending moment to the anti-slide pile 100 in the horizontal direction, and at the same time meet the requirements of quick installation and disassembly of the entire assembled retaining structure.
[0045] As a preferred implementation mode, this structure also includes a pile cap sleeve 500. The pile cap sleeve 500 is sleeved on the top of the anti-slide pile. The pile cap sleeve 500 is located between the contact surfaces of the capping beam 300 and the anti-slide pile 100. The pile cap sleeve 500 can be a rubber sleeve. In specific implementation, lubricating grease can be applied to the inner wall of the sleeve. Through the sleeve connection, it does not affect the transfer of horizontal constraints, and at the same time ensures that the steel section anti-slide pile 100 can be pulled out smoothly without affecting subsequent repeated turnover use.
[0046] In a preferred implementation mode, this structure also includes a backing plate 600. The backing plate 600 is padded between the contact surfaces of the baffle 200 and the capping beam 300. The backing plate 600 can be a bamboo plywood, and the backing plate 600 can reduce the damage to other components when the capping beam 300 is demolished.
[0047] Specifically, the backing plate 600 is in an inverted U shape and covers the top of the baffle 200. The installation stability of the backing plate 600 can be improved.
[0048] In this embodiment, the prestressed anchor cable 400 includes an anchor cable 410 and a perforated steel pipe 420. An installation hole is formed at the exposed end of the anti-slide pile 100. The head end of the anchor cable 410 can be anchored to the installation hole. The perforated steel pipe 420 is sleeved on the tail end of the anchor cable 410. The perforated steel pipe 420 is divided into a tensioning section and a grouting and anchoring section. The tensioning section is located on the side close to the anti-slide pile 100. A plurality of grouting holes communicating with its inner cavity are formed in the grouting and anchoring section. The grout injected into the perforated steel pipe 420 can flow out through the grouting holes. Since the anchor cable 400 is connected through the provided installation hole anchor, the situation that the connection effect between the prestressed anchor cable 400 and the anti-slide pile 100 is affected due to the small stiffness of the section of the profiled steel in the traditional method can be avoided.
[0049] During installation, first sleeve the perforated steel pipe 420 on the tail end of the anchor cable 410, then form an anchoring hole in the soil body, then place the perforated steel pipe 420 and the anchor cable 410 into the anchoring hole, and then grout into the perforated steel pipe 420. After the grout solidifies, the anchor cable 410 can be tensioned and its head end can be connected to the installation hole on the anti-slide pile 100. By adopting the grouting-assisted anchoring method of the perforated steel pipe 420, the prestressed anchor cable 400 can adapt to soil bodies with different soil qualities, especially in soft soil layers.
[0050] During specific implementation, when the anti-slide pile 100 is a circular profiled steel column, the installation hole penetrates the circular steel column along the radial direction of the circular steel column. The anchor cable 410 passes through the installation hole and is anchored to the circular steel column through a second anchor. During specific implementation, first form a radial, front-to-back through, and gradually downward-sloping installation hole from front to back in the circular steel column, then pass the end of the anchor cable 410 from back to front, and finally anchor the end that passes through with a second anchor.
[0051] During specific implementation, when the anti-slide pile 100 is an I-shaped steel column, two connecting cables 411 are arranged at the end of the anchor cable 410. The installation holes are arranged on the two flange plates of the I-shaped steel column. The two connecting cables 411 respectively pass through the two installation holes and are anchored to the corresponding flange plates through a third anchor.
[0052] Similarly, during installation, first set installation holes on the two flange plates of the I-shaped steel column, then pass the end of the anchor cable 410 from back to front, and finally, set third anchors at the two ends that pass through and fix the third anchors to the flange plates respectively. The third anchor is also a commonly used anchor in the prior art.
[0053] The installation method of the above light sheet pile retaining structure:
[0054] 1. Component processing: Cut and manufacture the profiled steel anti-slide pile 100 and the anchor cable 410 in a steel structure factory, manufacture the baffle 200 in a prefabrication yard, and customize the pile cap casing 500 from a professional manufacturer;
[0055] 2. Installation and construction of the anti-slide pile 100: First, use a crawler crane and a vibratory hammer to lift and sink the anti-slide pile 100, and vertically install the insertion end of the anti-slide pile 100 into the soil. For hard rock formations, the method of pre-drilling and replacement filling followed by driving can be adopted.
[0056] 3. Installation of the prestressed anchor cable 400:
[0057] After drilling a hole in the soil, insert the anchor cable and pre-anchor it with the first anchor. Subsequently, insert the steel flower tube 420 and grout it. After the strength meets the standard, tension the anchor cable 410 and anchor it to the anti-slide pile 100.
[0058] 4. Install the baffle 200;
[0059] 5. Install the backing plate 600 and install the pile cap casing 500;
[0060] 6. Pour the concrete capping beam 300 on the top of the anti-slide pile 100.
[0061] After the use of the retaining structure is completed, it shall be demolished in the order of demolishing the capping beam 300 → demolishing the baffle 200 → pulling out the anti-slide pile 100.
[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.
Claims
1. A lightweight sheet pile retaining structure, characterized in that, Comprising: Anti-slide piles, including an insertion end inserted into the soil body and an exposed end outside the soil body, and multiple groups of the anti-slide piles are arranged at intervals in a straight line; A capping beam for connecting the exposed ends of the anti-slide piles on the same straight line into one body; A baffle detachably installed between the exposed ends of two adjacent anti-slide piles; and A prestressed anchor cable, one end of which is connected to the exposed end and the other end is anchored in the soil body.
2. The light sheet pile retaining structure according to claim 1, wherein, The top end of the anti-slide pile is exposed outside the capping beam.
3. The light sheet pile retaining structure according to claim 1, wherein The anti-slide pile is a round steel column or an I-shaped steel column, and two groups of rib plates are arranged in pairs on the left and right side walls of the anti-slide pile, and a limiting groove is formed between the two rib plates on the same side.
4. The light sheet pile retaining structure according to claim 3, characterized in that, The prestressed anchor cable includes a cable and a steel flower tube. An installation hole is formed in the exposed end. The head end of the cable can be anchored to the installation hole. The steel flower tube is sleeved on the tail end of the cable. The steel flower tube is divided into a tensioning section and a grouting and anchoring section. The tensioning section is located on the side close to the anti-slide pile. A plurality of grouting holes communicating with its inner cavity are formed in the grouting and anchoring section, and the grouting injected into the steel flower tube can flow out through the grouting holes.
5. The light sheet pile retaining structure according to claim 4, characterized in that, The installation hole penetrates through the round steel column along the radial direction of the round steel column. The cable passes through the installation hole and is anchored to the round steel column through a second anchor.
6. The light sheet pile retaining structure according to claim 5, characterized in that, Two connecting cables are arranged at the end of the cable. The installation holes are formed in the two flange plates of the I-shaped steel column. The two connecting cables respectively pass through the two installation holes and are anchored to the corresponding flange plates through a third anchor.
7. The light sheet pile retaining structure according to claim 1, wherein A pile cap sleeve is sleeved on the top end of the anti-slide pile, and the pile cap sleeve is located between the contact surface of the capping beam and the anti-slide pile.
8. The light sheet pile retaining structure according to claim 7, characterized in that, Lubricating grease is smeared on the inner wall of the pile cap sleeve.
9. The light sheet pile retaining structure according to claim 1, characterized in that, It further includes a backing plate, and the backing plate is pad-mounted between the contact surfaces of the baffle and the capping beam.
10. The light sheet pile retaining structure according to claim 9, wherein The backing plate is in an inverted U shape and covers the top of the baffle.