Anchor cable device for deep foundation pit supporting pile body

Abstract

The utility model relates to a pile body anchor cable device for a deep foundation pit supporting pile, which can effectively solve the problems that in the prior art, too many manpower needs to be input for continuous construction, the construction quality cannot be guaranteed, and the construction efficiency is low, and adopts the technical scheme that the pile body anchor cable device comprises a row pile supporting structure and a row pile anchor cable anchoring structure which are used for supporting a constructed foundation pit, the row pile supporting structure is composed of a plurality of slope protection piles distributed from front to back along the peripheral edge line of a constructed foundation pit and a top beam connected to the upper portions of the slope protection piles, the slope protection piles are vertically distributed, the top beam is horizontally distributed, sleeves are embedded in different positions of pile bodies of the slope protection piles, and the sleeves are connected with the slope protection piles. Compared with traditional waist beam construction, the row pile anchor cable anchoring structure has the advantages that the construction cost can be effectively saved, the requirement for a working face is not high, environmental pollution is little, construction noise is low, time and labor are saved, and the row pile anchor cable anchoring structure is an innovation for a deep foundation pit supporting pile anchor structure.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-deep foundation pit support construction, in particular to an anchor cable device for a pile body of a deep foundation pit support pile. Background Art

[0002] With the rapid development of my country's economic construction, large-scale deep foundation pit projects continue to emerge. How to select, optimize and comprehensively apply new technologies for large-scale deep foundation pit support under various conditions is particularly important and urgent. With the rapid development of the economy, many large-scale and super-scale projects have appeared in the construction field, and deep foundation pits have continued to emerge and develop. This has also put forward many new challenges to the process requirements and implementation plans of foundation pit support projects, so many new technologies for deep foundation pit support have also emerged.

[0003] Especially in the construction and industrial fields affected by ultra-deep foundation pit support technology, in construction projects, the construction of deep foundation pit technology must pay attention to protecting surrounding buildings and ensuring the safety of buildings. The various stages and depths of deep foundation pit support have different requirements for each construction section, so it is necessary to improve the construction progress of deep foundation pit support piles and anchor configuration according to actual production safety requirements. The application of new deep foundation pit support technology will quickly improve the foundation pit construction, simplify the construction, and ensure safety. It is particularly important. For ultra-deep foundation pits with underground stone layers, the construction process needs to be broken and the mechanical vibration has a greater impact on the foundation pit wall. Traditional pile-anchor support and other methods cannot effectively guarantee the construction progress and cannot guarantee the continuous construction of the foundation pit. Especially when there are underground stone layers and it is impossible to control the foundation pit construction, the deep foundation pit slope support construction is particularly important. How to improve the anchoring construction of the foundation pit side support piles is the difficulty we need to solve. The traditional waist beam construction cannot ensure the construction period, and it requires too much manpower for continuous construction. In addition, the foundation pit construction period is long, the underground stone layer is unevenly distributed, and the construction continuity cannot be guaranteed. The efficiency is low. If there is a deviation in the construction period, it is very difficult to adjust. Therefore, effectively solving the anchoring construction of the support piles is a key issue. Therefore, it is imperative to invent a deep foundation pit slope support construction device. Summary of the invention

[0004] In view of the above situation, in order to solve the defects of the prior art, the purpose of the utility model is to provide an anchor cable device for deep foundation pit support piles, which can effectively solve the problems of the prior art that too much manpower is required for continuous construction, the construction quality cannot be guaranteed, and the construction efficiency is low.

[0005] The technical solution solved by the utility model is that it includes a pile row support structure and a pile row anchor cable anchoring structure for supporting the constructed foundation pit. The pile row support structure is composed of a plurality of slope protection piles arranged from front to back along the four peripheral lines of the constructed foundation pit and a crown beam connected to the upper part of the slope protection piles. The slope protection piles are arranged vertically, and the crown beam is arranged horizontally. The top of each slope protection pile is fastened to the crown beam as a whole. Casings are buried at different positions of the pile body of each slope protection pile, and the casings are all inclined downward at 15° from top to bottom. The pile row anchor cable anchoring structure is a plurality of rows of prestressed anchor cables arranged from top to bottom, and the prestressed anchor cables are inserted into the casings.

[0006] The utility model discloses the structure is novel and unique, simple and reasonable, easy to construct, with high construction efficiency and short construction period. Compared with the traditional waist beam construction, it can effectively save construction cost, has low requirements on the working surface, less environmental pollution and low construction noise, simplifies the operation process, is less difficult, safe and reliable, provides reliable conditions for the continuous construction of earth and stone in deep foundation pits during construction, saves time and effort, ensures continuous construction, can be widely used in the earth and stone construction of relatively deep foundation pits and the continuous earthwork construction in limited space, and is an innovation for the pile-anchor structure of deep foundation pit support. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural elevation view of the utility model.

[0008] Figure 2 For this utility model Figure 1 Side view of.

[0009] Figure 3 It is a structural schematic diagram of the slope protection pile of the utility model.

[0010] Figure 4 It is a structural schematic diagram of the prestressed anchor cable of the utility model. DETAILED DESCRIPTION

[0011] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0012] Depend on Figure 1-4 The utility model comprises a row of pile support structures 1 and a row of pile anchor cable anchoring structure 2 for supporting a foundation pit to be constructed. The row of pile support structures 1 is composed of a plurality of slope protection piles 1-1 arranged from front to back along the four peripheral lines of the foundation pit to be constructed and a crown beam 1-2 connected to the upper part of the slope protection piles. The slope protection piles 1-1 are arranged vertically, and the crown beam 1-2 are arranged horizontally. The top of each slope protection pile 1-1 is fastened to the crown beam 1-2 as a whole. A casing 1-3 is buried at different positions of the pile body of each slope protection pile 1-1. The casing 1-3 is inclined downward at 15° from top to bottom. The row of pile anchor cable anchoring structure 2 is a plurality of rows of prestressed anchor cables 2-1 arranged from top to bottom. The prestressed anchor cables 2-1 are inserted into the casing 1-3.

[0013] In order to ensure the use effect, the slope protection piles 1-1 and the crown beam 1-2 are both made of reinforced concrete.

[0014] The slope protection piles 1-1 are evenly arranged at equal intervals in the construction foundation pit.

[0015] The length of the prestressed anchor cable 2-1 decreases from top to bottom.

[0016] The lengths of the prestressed anchor cables 2-1 are 17.5m, 15m and 13m respectively.

[0017] The sleeves 1-3 are arranged at equal intervals on the pile body of each slope protection pile 1-1, and the plurality of slope protection piles 1-1 correspond to each other one by one.

[0018] The prestressed anchor cable 2-1 is composed of a free section 2-3 inserted into a casing 1-3 and an anchoring section 2-4 connected thereto.

[0019] The lower part of the slope protection pile 1 - 1 is connected to the drainage ditch 3 .

[0020] A guide cap 4 is provided at the end of the anchoring section 2-4.

[0021] The prestressed anchor cable 2 - 1 is fixed in the casing 1 - 3 via an anchor 5 , a steel pad 6 , and a wedge-shaped steel pad 7 . The wedge-shaped steel pad 7 is placed between the steel pad 6 and the slope protection pile 1 - 1 and fixed via the anchor 5 .

[0022] The utility model is used in that it comprises a row of piles supporting structure and a row of pile anchor cable anchoring structure for supporting a foundation pit under construction, the pile supporting structure comprising a plurality of slope protection piles arranged from front to back along the four perimeter lines of the foundation pit under construction and a crown beam connected to the upper part of the slope protection piles, the slope protection piles are arranged vertically and are reinforced concrete piles, the crown beam is a reinforced concrete beam arranged horizontally, and the top of each slope protection pile is fastened to the crown beam as a whole; the anchor cable anchoring structure is a single pile with multiple rows of prestressed anchor cables arranged from top to bottom and all anchored in the slope, the structures of the plurality of prestressed anchor cables are based on the different friction forces of the geological stratification and the stress distribution of the pile body, casings are pre-buried and penetrated at different positions of the pile body Prestressed anchor cables of different lengths are set, all of which are inclined downward at 15° from top to bottom. According to the distribution position of the anchor cables, after the reinforcement cage of the slope protection pile is completed, the embedded casing can be located and buried, the two sides of the casing can be sealed, and marks can be made on the positioning steel bars to facilitate the precise location of the construction anchor cable (embedded casing) according to the marks after the concrete pouring is completed and the earth and stone excavation is completed in layers. The integrity of the pile body reinforcement can be effectively ensured, thereby ensuring the reliability of the support pile design. The anchoring structure of the support pile cancels the traditional waist beam setting, and the prestressed anchor cable is directly set on the pile body. It is reasonably distributed from top to bottom according to the geological stratification of the foundation pit, and the length of the anchor cable anchoring section can be set according to the force characteristics, which can also achieve the concept of economical construction.

[0023] The utility model has a novel and unique structure, a simple structure, a reasonable design, and is easy to construct and has a good use effect. It can simply and quickly complete the deep foundation pit support construction process and effectively ensure the earthwork of ultra-deep foundation pits. The pile-anchor type construction adopted for pile body anchoring has low construction cost and high anchoring force, and there is no influence of waist beam deformation and the like. A steel casing is added to the through position of the anchor cable of the supporting pile reinforcement cage, and the positioning is marked. After the pile is formed, a prestressed anchor cable is installed at the pile body positioning position. The anchor section of the prestressed anchor cable can be set with different lengths of anchor sections according to different geological conditions of the construction site, thereby achieving The construction process can save manpower, materials, and machines to varying degrees. The anchor cable anchoring position is directly set on the pile body, which can reduce the inconvenience of traditional waist beam construction, further save construction costs, and effectively support deep foundation pits. This method is safe and reliable and is suitable for deep foundation pit support construction with deep depth and limited space. It is easy to operate and the construction process is simple and fast, which greatly reduces the work intensity. There is no restriction on the safe support of deep foundation pit construction. It can be especially used for deep foundation pit support with different geological stratifications, saving traditional processes and having good economic and social benefits.

[0024] It should be pointed out that the above is only a preferred embodiment of the utility model, and does not impose any form of limitation on the utility model. Any technician familiar with the profession can use the technical content disclosed above to make changes or modify it into an equivalent embodiment with equivalent changes without departing from the technical solution of the utility model, which all fall within the protection scope of the utility model.

Claims

1. An anchor cable device for deep foundation pit support piles, characterized in that: The invention comprises a pile row support structure (1) and a pile row anchor cable anchoring structure (2) for supporting a foundation pit to be constructed. The pile row support structure (1) is composed of a plurality of slope protection piles (1-1) arranged from front to back along the four perimeter lines of the foundation pit to be constructed and a crown beam (1-2) connected to the upper part of the slope protection piles. The slope protection piles (1-1) are arranged vertically, and the crown beam (1-2) is arranged horizontally. The top of each slope protection pile (1-1) is tightly connected to the crown beam (1-2) as a whole. A casing (1-3) is buried at different positions of the pile body of each slope protection pile (1-1). The casing (1-3) is inclined downward at 15 degrees from top to bottom. The pile row anchor cable anchoring structure (2) is a plurality of rows of prestressed anchor cables (2-1) arranged from top to bottom. The prestressed anchor cables (2-1) are inserted into the casing (1-3).

2. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The slope protection piles (1-1) and the crown beam (1-2) are both made of reinforced concrete.

3. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The slope protection piles (1-1) are evenly arranged at equal intervals in the construction foundation pit.

4. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The length of the prestressed anchor cable (2-1) decreases from top to bottom.

5. The anchor cable device for deep foundation pit support piles according to claim 4, characterized in that: The lengths of the prestressed anchor cables (2-1) are 17.5m, 15m and 13m respectively.

6. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The sleeves (1-3) are arranged at equal intervals on the pile body of each slope protection pile (1-1), and the plurality of slope protection piles (1-1) correspond to each other one by one.

7. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The prestressed anchor cable (2-1) is composed of a free section (2-3) inserted into a sleeve (1-3) and an anchoring section (2-4) connected thereto.

8. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The lower part of the slope protection pile (1-1) is connected to the drainage ditch (3).

9. The anchor cable device for deep foundation pit support piles according to claim 7, characterized in that: A guide cap (4) is provided at the end of the anchoring section (2-4).

10. The anchor cable device for deep foundation pit support piles according to claim 1, characterized in that: The prestressed anchor cable (2-1) is fixed in the casing (1-3) via an anchor (5), a steel pad (6) and a wedge-shaped steel pad (7); the wedge-shaped steel pad (7) is placed between the steel pad (6) and the slope protection pile (1-1) and fixed via the anchor (5).

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