Soil nail steel sheet pile composite supporting device suitable for deep foundation pit

Abstract

The utility model provides a soil nail steel sheet pile composite supporting device suitable for a deep foundation pit. The soil nail steel sheet pile composite supporting device comprises a steel sheet pile assembly; the sleeve is arranged on one side of the steel sheet pile assembly; the soil nail assembly is arranged in the casing pipe; the gasket is arranged on the outer side face of the soil nail assembly in a sleeving mode; the nut is in threaded connection with the outer side face of the soil nail assembly. According to the soil nail steel sheet pile composite supporting device suitable for the deep foundation pit, the installation ring, the connecting ring, the installation frame, the sliding rod, the spring, the baffle, the check ring, the penetrating groove and other structures are matched with one another, after grouting is completed, elasticity of the spring can push the baffle, and therefore the baffle blocks the penetrating groove, and the soil nail steel sheet pile composite supporting device is convenient to use. In this way, slurry entering the soil nail assembly can be prevented from flowing out, and the grouting effect of the soil nail assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, and in particular to a soil nailing and steel sheet pile composite support device suitable for deep foundation pits. Background Technology

[0002] In building construction, foundation pit support is an important construction project. Although there are many support methods available, the actual operation is difficult due to the complexity of construction conditions and the fact that each construction site is different. In some areas with dense soil, if high-rise building construction is to be carried out, deep foundation pit excavation is required. In order to support the deep pit, support devices are used.

[0003] As described in the prior art patent application CN 210562206 U, this invention utilizes a sheet pile wall and a soil nail assembly installed on the sheet pile wall. The sheet pile wall comprises multiple channel-shaped sheet piles, with the edges of adjacent sheet piles connected to each other and the opening directions of adjacent sheet piles opposite. Sheet piles with openings facing the pit surface are near-soil surface sheet piles, while those with openings facing the soil surface are near-pit surface sheet piles. The soil nail assembly includes a sheet metal sleeve with a side wall opening vertically fixed to the bottom outer wall of the near-soil surface sheet pile, a hollow screw with a side wall opening coaxially disposed within the sheet metal sleeve and capable of axial movement, and multiple wire claws hinged to the outer wall of the hollow screw and passing through the sheet metal sleeve. The length of the hollow screw is greater than the length of the sheet metal sleeve, and one end of the hollow screw is a tapered flared end with an outer diameter greater than the inner diameter of the sheet metal sleeve. This invention, using a composite support of sheet piles and soil nails, can withstand greater earthwork pressure and meet the requirements for deeper excavation.

[0004] When installing this support device, grout needs to be injected into the hollow soil nail assembly. However, since one end of the soil nail assembly is open, the grout can easily flow out during injection, thus reducing the effectiveness of the grouting.

[0005] Therefore, it is necessary to provide a soil nailing and sheet pile composite support device suitable for deep foundation pits to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a soil nailing and sheet pile composite support device suitable for deep foundation pits, which solves the problem that the injected slurry easily flows out from inside the soil nail assembly, thereby reducing the grouting efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides a soil nailing and steel sheet pile composite support device suitable for deep foundation pits, comprising:

[0008] Steel sheet pile assembly;

[0009] A sleeve is disposed on one side of the sheet pile assembly;

[0010] A soil nailing assembly, wherein the soil nailing assembly is disposed inside the sleeve;

[0011] A gasket, wherein the gasket is fitted onto the outer side of the soil nail assembly;

[0012] Nut, the nut being threaded onto the outer side of the soil nail assembly;

[0013] An installation ring is disposed on the inner side of the soil nail assembly. A connecting ring is fixedly installed at one end of the installation ring. An installation bracket is fixedly installed inside the installation ring. A sliding rod is slidably connected inside the installation bracket. A baffle is fixedly installed at one end of the sliding rod. A retaining ring is provided at one end of the baffle. A through groove is opened inside the retaining ring. The retaining ring is fixedly installed inside the soil nail assembly. A spring is sleeved on the outer side of the sliding rod.

[0014] Preferably, the sheet pile assembly includes sheet piles near the soil surface and sheet piles near the pit surface, and the sheet piles near the soil surface and the sheet piles near the pit surface are interconnected.

[0015] Preferably, the spring is disposed between the mounting bracket and the baffle.

[0016] Preferably, a corrugated rubber sleeve is fixedly installed on one side of the mounting bracket, and one end of the corrugated rubber sleeve is fixedly installed on the other side of the baffle.

[0017] Preferably, the corrugated rubber sleeve is fitted onto the outer side of the spring.

[0018] Preferably, the mounting ring is threaded to the inner side of the soil nail assembly, and a retaining ring is fixedly installed on the outer side of the mounting ring.

[0019] Preferably, a rotating rod is fixedly installed on the outer side of the fixing ring.

[0020] Compared with related technologies, the soil nailing and sheet pile composite support device for deep foundation pits provided by this utility model has the following beneficial effects:

[0021] This utility model provides a soil nailing and sheet pile composite support device suitable for deep foundation pits. The device uses a combination of structures such as an installation ring, a connecting ring, an installation frame, a sliding rod, a spring, a baffle, a retaining ring, and a through groove. After grouting is completed, the elasticity of the spring pushes the baffle, thereby blocking the through groove. This prevents the mud that has entered the soil nail assembly from flowing out, thus increasing the grouting effect of the soil nail assembly. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a first embodiment of a soil nailing and sheet pile composite support device suitable for deep foundation pits provided by this utility model;

[0023] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;

[0024] Figure 3 for Figure 2 The diagram shows the structure of the soil nailing assembly.

[0025] Figure 4 for Figure 3 The enlarged schematic diagram of section B is shown below;

[0026] Figure 5 This is a schematic diagram of the second embodiment of a soil nailing and sheet pile composite support device for deep foundation pits provided by this utility model.

[0027] The following are the labeling elements in the diagram: 1. Sheet pile assembly; 11. Sheet pile near the soil surface; 12. Sheet pile near the pit surface; 2. Sleeve; 3. Washer; 4. Nut; 5. Soil nail assembly; 6. Mounting ring; 61. Connecting ring; 62. Mounting bracket; 63. Sliding rod; 64. Spring; 65. Baffle; 66. Retaining ring; 67. Through slot; 68. Corrugated rubber sleeve; 7. Fixing ring; 71. Rotating rod. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] First Embodiment

[0030] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a soil nailing and sheet pile composite support device suitable for deep foundation pits provided by this utility model; Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below; Figure 3 for Figure 2 The diagram shows the structure of the soil nailing assembly. Figure 4 for Figure 3 The enlarged schematic diagram of section B is shown. A soil nailing and steel sheet pile composite support device suitable for deep foundation pits includes: a steel sheet pile assembly 1;

[0031] Sleeve 2, wherein sleeve 2 is disposed on one side of the sheet pile assembly 1;

[0032] Soil nailing assembly 5, wherein the soil nailing assembly 5 is disposed inside the sleeve 2;

[0033] Gasket 3, the gasket 3 is sleeved on the outer side of the soil nail assembly 5;

[0034] Nut 4, which is threaded onto the outer side of the soil nail assembly 5;

[0035] Mounting ring 6 is disposed on the inner side of the soil nail assembly 5. A connecting ring 61 is fixedly installed at one end of the mounting ring 6. A mounting bracket 62 is fixedly installed inside the mounting ring 6. A sliding rod 63 is slidably connected inside the mounting bracket 62. A baffle 65 is fixedly installed at one end of the sliding rod 63. A retaining ring 66 is provided at one end of the baffle 65. A through groove 67 is opened inside the retaining ring 66. The retaining ring 66 is fixedly installed inside the soil nail assembly 5. A spring 64 is sleeved on the outer side of the sliding rod 63.

[0036] The sheet pile assembly 1 includes sheet piles 11 near the soil surface and sheet piles 12 near the pit surface, which are connected to each other.

[0037] The spring 64 is disposed between the mounting bracket 62 and the baffle 65.

[0038] A corrugated rubber sleeve 68 is fixedly installed on one side of the mounting bracket 62, and one end of the corrugated rubber sleeve 68 is fixedly installed on the other side of the baffle 65.

[0039] The corrugated rubber sleeve 68 is fitted onto the outer side of the spring 64.

[0040] Soil nail assembly 5 includes hollow screws and expansion joints;

[0041] When using the sheet piles, calculations are performed based on the site construction conditions to determine the type and length of the sheet piles, as well as the lengths of the sleeve 2 and the hollow screws. Two vertically arranged through holes are drilled on the bottom surface of the sheet piles 11 near the soil surface to allow the hollow screws to pass through, and two sets of soil nail assemblies are installed on the bottom surface of each sheet pile near the soil surface. Then, the foundation pit is excavated, and after reaching the first through hole, the hole is drilled. After that, the soil nail assembly 5 is inserted, the sleeve 2 is welded, the hollow screws and nuts 4 are tightened, and the wire claws are supported. Then, grout is injected into the hollow screws. The next step of excavation is carried out, and the sheet piles are supported.

[0042] By sleeved with a corrugated rubber sleeve 68 on the outer side of the spring 64, the spring 64 can be protected during use, preventing it from sticking to the mud and thus affecting its performance.

[0043] The working principle of the soil nailing and steel sheet pile composite support device for deep foundation pits provided by this utility model is as follows:

[0044] When it is necessary to inject mud into the soil nail assembly 5, the user can first install the mounting ring 6 onto the inner side of the soil nail assembly 5, then connect the mud injection pipe and the connecting ring 61, and then inject mud into the inner side of the connecting ring 61 through the pipe. At this time, the mud enters the inner side of the mounting ring 6 through the through groove 67. When it enters the inner side of the mounting ring 6, it will push the baffle 65. At this time, the slide rod 63 will slide inside the mounting bracket 62, and at the same time the spring 64 will be squeezed, so that the mud enters the interior of the soil nail assembly 5. After the injection is completed, the elasticity of the spring 64 will push the baffle 65 to move, so that the baffle 65 blocks the through groove 67 and prevents the mud from flowing out.

[0045] Compared with related technologies, the soil nailing and sheet pile composite support device for deep foundation pits provided by this utility model has the following beneficial effects:

[0046] The structure, consisting of mounting ring 6, connecting ring 61, mounting bracket 62, sliding rod 63, spring 64, baffle 65, retaining ring 66, and through groove 67, works together to ensure that after grouting, the elasticity of spring 64 pushes baffle 65, thereby blocking through groove 67. This prevents the grout from flowing out of the soil nail assembly 5, thus increasing the grouting effect of the soil nail assembly 5.

[0047] Second Embodiment

[0048] Please refer to the following: Figure 5 Based on the first embodiment of this application, which provides a soil-nailed sheet pile composite support device suitable for deep foundation pits, the second embodiment of this application proposes another soil-nailed sheet pile composite support device suitable for deep foundation pits. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0049] Specifically, the second embodiment of this application provides a soil nailing and sheet pile composite support device suitable for deep foundation pits, wherein the mounting ring 6 is threadedly connected to the inner side of the soil nail assembly 5, and a fixing ring 7 is fixedly installed on the outer side of the mounting ring 6.

[0050] A rotating rod 71 is fixedly installed on the outer side of the fixed ring 7.

[0051] The working principle of the soil nailing and steel sheet pile composite support device for deep foundation pits provided by this utility model is as follows:

[0052] When using the device, if it is necessary to remove the mounting ring 6, the user can rotate the rotating rod 71, which will cause the fixed ring 7 to rotate, thereby causing the fixed ring 7 to pull the mounting ring 6 out of the internal thread of the soil nail assembly 5, thus removing the mounting ring 6.

[0053] Compared with related technologies, the soil nailing and sheet pile composite support device for deep foundation pits provided by this utility model has the following beneficial effects:

[0054] The mounting ring 6 can be easily and quickly disassembled by rotating the rotating rod 71, which is achieved by the cooperation of the fixed ring 7 and the rotating rod 71.

[0055] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A soil-nailed sheet pile composite support device suitable for deep foundation pits, characterized in that, include: Steel sheet pile assembly; A sleeve is disposed on one side of the sheet pile assembly; A soil nailing assembly, wherein the soil nailing assembly is disposed inside the sleeve; A gasket, wherein the gasket is fitted onto the outer side of the soil nail assembly; Nut, the nut being threaded onto the outer side of the soil nail assembly; An installation ring is disposed on the inner side of the soil nail assembly. A connecting ring is fixedly installed at one end of the installation ring. An installation bracket is fixedly installed inside the installation ring. A sliding rod is slidably connected inside the installation bracket. A baffle is fixedly installed at one end of the sliding rod. A retaining ring is provided at one end of the baffle. A through groove is opened inside the retaining ring. The retaining ring is fixedly installed inside the soil nail assembly. A spring is sleeved on the outer side of the sliding rod.

2. The soil nailing and sheet pile composite support device for deep foundation pits according to claim 1, characterized in that, The sheet pile assembly includes sheet piles near the soil surface and sheet piles near the pit surface, which are interconnected.

3. The soil nailing and sheet pile composite support device for deep foundation pits according to claim 1, characterized in that, The spring is positioned between the mounting bracket and the baffle.

4. The soil nailing and sheet pile composite support device for deep foundation pits according to claim 1, characterized in that, A corrugated rubber sleeve is fixedly installed on one side of the mounting bracket, and one end of the corrugated rubber sleeve is fixedly installed on the other side of the baffle.

5. The soil-nailing steel sheet-pile composite support device for deep foundation pit according to claim 4, characterized in that, The corrugated rubber sleeve is fitted onto the outer side of the spring.

6. The soil-nailing steel sheet-pile composite support device for deep foundation pit according to claim 1, characterized in that, The mounting ring is threaded to the inner side of the soil nail assembly, and a retaining ring is fixedly installed on the outer side of the mounting ring.

7. A soil nailing and sheet pile composite support device suitable for deep foundation pits according to claim 6, characterized in that, A rotating rod is fixedly installed on the outer side of the fixed ring.

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