A hole digging pile wall protection ladder structure

Abstract

The utility model discloses a kind of hole pile wall protection ladder structure, include pile hole, be set on the inner wall of pile hole a group of wall protection section, be set in the wall protection section inside wall protection ladder, and be set in the soft ladder of wall protection ladder bottom, wall protection section includes wall protection main body and wall protection reserved hole, wall protection main body is annularly arranged and inner ring body opening diameter gradually changes from small to big setting;Wall protection reserved hole is set in lower part in wall protection main body, the wall protection ladder includes wall protection main ladder and is connected on wall protection main ladder wall protection ladder connecting piece;Wall protection ladder connecting piece is connected in wall protection reserved hole.The utility model passes through modularization's hard ladder unit and bottom flexible link, solve the material utilization of ladder system low, recovery is poor, safety hidden trouble is outstanding etc.

Description

Technical Field

[0001] This utility model relates to the field of bored pile retaining wall technology, and in particular to a climbing ladder structure for bored pile retaining wall. Background Technology

[0002] In bored pile construction, safe access for workers is a core element in ensuring construction safety. Traditional solutions typically employ rigid metal ladders or flexible soft ladders. However, rigid metal ladders require custom-made lengths based on the pile hole depth, making them unsuitable for different projects. After construction, these ladders are difficult to dismantle and are often directly embedded into the pile body or discarded, resulting in extremely low material utilization and high overall costs. While flexible soft ladders can be adjusted to different depths, in deep-hole scenarios, the lack of rigid support causes severe swaying during climbing, limiting climbing speed and posing significant safety hazards. In summary, existing bored pile ladder structures generally suffer from problems such as low material utilization, poor recyclability, and significant safety hazards, necessitating the development of a bored pile retaining wall ladder structure to address these issues. Utility Model Content

[0003] This utility model provides a ladder structure for the retaining wall of bored piles to solve the problems of low material utilization, poor recyclability, and prominent safety hazards in bored pile ladder structures. To achieve the above objectives, the present invention adopts the following technical solution: a drilling pile retaining wall ladder structure, comprising a pile hole, a set of retaining wall segments disposed on the inner wall of the pile hole, a retaining wall ladder disposed on the inner side of the retaining wall segments, and a soft ladder disposed at the bottom of the retaining wall ladder. The retaining wall segment includes a retaining wall body and retaining wall pre-reserved holes. The retaining wall body is ring-shaped with the diameter of the inner ring opening gradually increasing from small to large. The retaining wall pre-reserved holes are located in the lower middle part of the retaining wall body. The wall-mounted ladder includes a main wall-mounted ladder and a connecting member for the main wall-mounted ladder; the connecting member is inserted into a pre-drilled hole in the wall.

[0004] Furthermore, the retaining wall segments are arranged in a continuous manner within the height range of the pile hole, and each retaining wall segment is provided with at least one retaining wall reserved hole.

[0005] Furthermore, the main wall-mounted staircase includes a main wall-mounted joist and wall-mounted steps vertically connected to the main wall-mounted joist; the main wall-mounted joist is made of square steel tubing. The retaining wall steps are rods, which are spaced apart along the height of the main retaining wall keel.

[0006] Furthermore, the spacing between adjacent retaining wall steps shall not be less than 200mm, and each retaining wall step shall be symmetrically arranged about the main retaining wall keel, with a single side length of not less than 200mm.

[0007] Furthermore, at least two wall-mounted ladder connectors are provided on the main wall-mounted keel, and the two wall-mounted ladder connectors are respectively connected to adjacent wall-mounted segments.

[0008] Furthermore, the wall-mounted ladder connector includes rods and fastening nuts, with the rods passing through the main wall-mounted joists and the pre-drilled holes in the wall-mounted ladder; fastening nuts are provided on the rods on both sides of the main wall-mounted joists.

[0009] Furthermore, the flexible ladder is detachably connected to the bottom of the main retaining wall keel, and the flexible ladder is installed at the bottom one or the last two retaining wall segments.

[0010] Furthermore, a protective meniscus is also provided, which is a semi-circular protective steel plate or wooden board, located at the connection of the last two protective wall segments.

[0011] Furthermore, a water-retaining ring is installed at the top of the pile hole, and a ring beam is installed inside the water-retaining ring; the inner diameter of the ring beam is set to correspond to the top diameter of the inner ring of the retaining wall segment.

[0012] The beneficial effects of this utility model are reflected in: 1) This utility model improves the material utilization rate of the retaining wall ladder structure of bored piles by using a detachable and installable retaining wall ladder.

[0013] 2) This utility model uses a modular retaining wall ladder, which allows for the free assembly of the number of rigid ladder units according to actual construction needs, thereby ensuring the flexibility and applicability of the retaining wall ladder structure for bored piles.

[0014] 3) This utility model adapts to uneven terrain at the bottom of the pile by using a flexible bottom connection. On the one hand, it avoids rigid contact between the rigid climbing ladder unit and the bottom of the pile. On the other hand, the shorter soft climbing ladder is less likely to cause swaying risk, which improves the flexibility and applicability of the climbing ladder system and ensures safety.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of this invention may be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the bored pile retaining wall climbing ladder system of this utility model.

[0017] Figure 2 This is an installation diagram of the retaining wall segment and retaining wall ladder connector of this utility model.

[0018] Figure 3 This is a schematic diagram of the installation of the pre-drilled hole for the retaining wall and the connecting piece for the retaining wall ladder in this utility model.

[0019] Figure 4 This is a side view of the wall-mounted ladder of this utility model.

[0020] Figure 5 This is a partial view of the wall-mounted ladder connector of the wall-mounted ladder of this utility model.

[0021] Figure 6 This is the front view of the wall-mounted ladder of this utility model.

[0022] Figure 7 This is a top cross-sectional view of the wall protection template of this utility model.

[0023] Figure 8 This is the front view of the protective wall template of this utility model.

[0024] Attached reference numerals: 1-Pile hole, 2-Ground surface, 3-Water retaining ring, 4-Ring beam, 5-Wall retaining segment, 51-Wall retaining body, 52-Wall retaining reserved hole, 6-Wall retaining ladder, 61-Wall retaining main ladder, 611-Wall retaining main keel, 612-Wall retaining steps, 62-Wall retaining ladder connector, 7-Soft ladder, 8-Protective meniscus, 9-Excavation working face, 10-Wall retaining formwork, 11-Formwork opening. Detailed Implementation

[0025] The technical solution of this utility model will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.

[0026] Taking a bored pile as an example, in order to ensure a high recycling rate of the ladder material for the bored pile and reduce safety hazards, the following measures are taken: Figure 1-8 The construction of the drilling pile retaining wall climbing ladder 6 structure shown is carried out; In this embodiment, the retaining wall ladder structure of the bored pile includes a pile hole, a set of retaining wall segments 5 disposed on the inner wall of the pile hole, a retaining wall ladder 6 disposed on the inner side of the retaining wall segments 5, and a soft ladder 7 disposed at the bottom of the retaining wall ladder 6; the retaining wall segment 5 includes a retaining wall body 51 and a retaining wall reserved hole 52, the retaining wall body 51 is arranged in a ring and the diameter of the inner ring opening gradually changes from small to large; the retaining wall reserved hole 52 is disposed in the lower part of the retaining wall body 51, and a sleeve is disposed in the retaining wall reserved hole 52; the retaining wall segments 5 are arranged in a continuous manner within the height range of the pile hole, and each retaining wall segment 5 is provided with at least one retaining wall reserved hole 52, and the retaining wall depth of each section of the bored pile is specified to be ≤1000mm.

[0027] In this embodiment, the retaining wall ladder 6 includes a main retaining wall ladder 61 and retaining wall ladder connectors 62 connected to the main retaining wall ladder 61. The main retaining wall ladder 61 includes a main retaining wall frame 611 and retaining wall steps 612 vertically connected to the main retaining wall frame 611. The length of this modular retaining wall ladder 6 covers two retaining wall segments 5. The main retaining wall frame 611 is made of square steel pipe, using 60mm×60mm×2mm square steel. The retaining wall steps 612 are rods, using round steel with a diameter of 16mm, and are spaced apart along the height direction of the main retaining wall frame 611. The distance between adjacent retaining wall steps 612 is not less than 200mm, and each retaining wall step 612 is symmetrically arranged about the main retaining wall frame 611, with a length of not less than 200mm on one side.

[0028] In this embodiment, the wall-mounted ladder connector 62 passes through the pre-drilled hole 52 in the wall retaining structure. At least two wall-mounted ladder connectors 62 are provided on the main wall retaining frame 611, and each connector is connected to an adjacent wall retaining segment 5. Each ladder connector 62 includes a rod and a fastening nut. The rod passes through the main wall retaining frame 611 and the pre-drilled hole 52. The rod uses 300mm long M16 fully threaded stainless steel bolts of grade 8.8, and the bolts are screwed into the pre-drilled hole 52 to a depth of ≥100mm. Fastening nuts are provided on the rods on both sides of the main wall retaining frame 611. A flexible ladder 7 is detachably connected to the bottom of the main wall retaining frame 611, and is located at the bottommost or the two last wall retaining segments 5. A protective meniscus 8, which is a semi-circular protective steel plate or wooden board, is also provided at the connection point of the two last wall retaining segments 5. A water-retaining ring 3 is also installed at the top of the pile hole at point 2 on the ground. A ring beam 4 is installed inside the water-retaining ring 3. The inner diameter of the ring beam 4 corresponds to the top diameter of the inner ring of the retaining wall segment 5.

[0029] In this embodiment, the retaining wall segment 5 is cast into shape in the pile hole space by the retaining wall template 10. The retaining wall template 10 is formed into a curved panel that is narrow at the top and wide at the bottom. The four curved panels are connected end to end to form a frustum cylindrical structure. One of the curved panels is provided with a template opening 11.

[0030] In actual construction, the retaining wall segments 5 are first excavated and cast sequentially along the depth of the pile hole. Next, pre-drilled retaining wall holes 52 are installed, followed by the modular installation of the retaining wall ladders 6. The installation of the retaining wall ladders 6 follows a specific time sequence. After the second retaining wall segment is cast, the first modular ladder is installed, specifically at the pre-drilled retaining wall hole 52 of the first retaining wall segment. During subsequent construction, one retaining wall ladder 6 is installed for every two newly added retaining wall segments 5, forming a continuous staircase. The retaining wall segments 5 and the retaining wall ladders 6 are connected and fixed using retaining wall ladder connectors 62. The only consumable material for the bored pile retaining wall ladder 6 structure is the sleeve left inside the pre-drilled retaining wall hole 52; all other structural components can be recycled and reused in new projects.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A caisson protection ladder structure characterized by, It includes a pile hole (1), a set of retaining wall segments (5) set on the inner wall of the pile hole (1), a retaining wall ladder (6) set on the inner side of the retaining wall segments (5), and a soft ladder (7) set at the bottom of the retaining wall ladder (6). The retaining wall segment (5) includes a retaining wall body (51) and a retaining wall reserved hole (52). The retaining wall body (51) is arranged in a ring shape and the diameter of the inner ring opening gradually changes from small to large. The retaining wall reserved hole (52) is located in the lower part of the retaining wall body (51). The wall-mounted ladder (6) includes a main wall-mounted ladder (61) and a wall-mounted ladder connector (62) connected to the main wall-mounted ladder (61); the wall-mounted ladder connector (62) passes through a pre-drilled hole (52) in the wall.

2. A hole protection ladder structure according to claim 1, wherein The retaining wall segment (5) is set in a continuous manner within the height range of the pile hole (1), and each retaining wall segment (5) is provided with at least one retaining wall reserved hole (52).

3. The ladder structure for retaining wall of bored piles as described in claim 1, characterized in that, The wall-mounted main staircase (61) includes a wall-mounted main keel (611) and wall-mounted steps (612) vertically connected to the wall-mounted main keel (611); the wall-mounted main keel (611) is made of square steel pipe. The wall-mounted steps (612) are rods, which are spaced apart along the height of the main wall-mounted keel (611).

4. The ladder structure for retaining wall of bored piles as described in claim 3, characterized in that, The spacing between adjacent wall protection steps (612) shall not be less than 200mm. Each wall protection step (612) shall be symmetrically arranged about the main wall protection keel (611), and the length on one side shall not be less than 200mm.

5. The ladder structure for retaining wall of bored piles as described in claim 4, characterized in that, At least two wall ladder connectors (62) are provided on the main wall keel (611), and the two wall ladder connectors (62) are respectively connected to the adjacent wall segments (5).

6. The ladder structure for retaining wall of bored piles as described in claim 5, characterized in that, The wall-mounted ladder connector (62) includes rods and fastening nuts. The rods pass through the main wall-mounted keel (611) and the wall-mounted pre-drilled hole (52). Fastening nuts are provided on the rods on both sides of the main wall-mounted keel (611).

7. The ladder structure for retaining wall of bored piles as described in claim 3, characterized in that, The soft ladder (7) is detachably connected to the bottom of the main keel (611) of the wall, and the soft ladder (7) is set at the bottom one or the last two wall sections (5).

8. The ladder structure for retaining wall of bored piles as described in claim 1, characterized in that, It is also equipped with a protective semi-circular steel or wooden plate (8), which is located at the connection of the last two wall sections (5).

9. The ladder structure for retaining wall of bored piles as described in claim 1, characterized in that, A water-retaining ring (3) is also installed at the top ground (2) of the pile hole (1), and a ring beam (4) is installed inside the water-retaining ring (3); the inner diameter of the ring beam (4) corresponds to the top diameter of the inner ring of the wall protection segment (5).

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