Combined supporting device for deep foundation pit earth excavation

Abstract

The utility model discloses a deep foundation pit earthwork excavation combined supporting device, which belongs to the technical field of deep foundation pit earthwork and comprises a foundation pit wall, transverse fender posts are arranged on the inner surface of the foundation pit wall, longitudinal fender posts are arranged on the surfaces of the transverse fender posts, and fixing components are arranged at the bottoms of the longitudinal fender posts. The fixing assemblies are arranged, the threaded insertion rods are fixed to the bottoms of the longitudinal fender posts in a threaded mode, the pointed rods at the lower ends of the threaded insertion rods can conveniently drive the threaded insertion rods to be inserted into soil, and therefore the longitudinal fence is more stable in structure when installed; the protective cover can shield the pointed rod, so that the safety is relatively high; the protective assemblies are arranged, the surfaces of the transverse fender posts and the surfaces of the longitudinal fender posts are coated with epoxy resin anti-corrosion paint for anti-corrosion protection, the anti-abrasion paint layers enable the fender posts not to be abraded easily, the inner waterproof layer and the outer waterproof layer achieve double moisture prevention, the fender posts are prevented from being damped and damaged, and the protective effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep foundation pit earthwork, and in particular relates to a deep foundation pit earthwork excavation combined supporting device. Background Art

[0002] There are two concepts of deep foundation pit. One is that the depth of the foundation pit excavation has exceeded 5 meters, and it also includes 5 meters. In this case, it is a deep foundation pit. The other is that if the depth does not exceed 5 meters, but the surrounding environment and geological conditions are relatively complex, it can also be called a deep foundation pit.

[0003] Chinese patent application No. 201820633736.6 discloses a deep foundation pit excavation support device, including a foundation pit wall, wherein the inner surface of the foundation pit wall is paved with transverse retaining piles, and the other side of the transverse retaining piles is paved with longitudinal retaining piles, and the top of the longitudinal retaining pile is clamped with a concave wedge plate, and the surface of the inclined beam is provided with a supporting device, and the supporting device includes a sleeve rod, a spring and a support rod, and an adjusting device is installed at the other end of the support beam. By installing the adjusting device between the support beams, by inserting a threaded rod in the shell of the adjusting device, both ends of the threaded rod are movably installed by threads to support the beam with a threaded groove on the inner side, and by sleeved an adjusting gear on the outer side of the threaded rod, the threaded rod is driven to rotate inside the support beam by rotating the adjusting gear, so as to adjust the distance between the concave wedge plates, thereby reducing the problem of loose connection caused by the out-of-tolerance of the foundation pit retaining piles, and the structure is simple and practical.

[0004] In the above-mentioned public patents, 1. when the longitudinal retaining piles are fixed on the surface of the transverse retaining piles, there is a lack of connection between the bottom and the foundation pit wall, and the structure may not be stable enough; 2. when the longitudinal retaining piles and the transverse retaining piles are used, they are easily contaminated and damaged by the soil and moisture in the soil, and they need to be protected. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a combined supporting device for deep foundation pit excavation, which has the characteristics of stable structure and non-damageable protective piles.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined supporting device for deep foundation pit excavation, comprising a foundation pit wall, wherein the inner surface of the foundation pit wall is provided with transverse retaining piles, the surface of the transverse retaining piles is provided with longitudinal retaining piles, the bottom of the longitudinal retaining piles is provided with fixing components, the surfaces of the transverse retaining piles and the longitudinal retaining piles are provided with protective components, the upper ends of the longitudinal retaining piles are provided with concave wedge plates, the surfaces of the concave wedge plates are provided with supporting beams, an adjusting device is provided between the two groups of supporting beams, the side surfaces of the longitudinal retaining piles are provided with corbels, a fixing plate is provided inside the supporting beams, an inclined beam is provided between the corbels and the fixing plate, and a supporting device is provided between the inclined beam and the concave wedge plates.

[0007] Preferably, the fixing assembly includes a threaded rod, a protective structure, a pointed rod and a threaded groove, wherein a threaded groove is arranged inside the lower end of the longitudinal retaining pile, a threaded rod is arranged inside the threaded groove, a pointed rod is arranged at the lower end of the threaded rod, and a protective structure is arranged on the surface of the threaded rod and the pointed rod.

[0008] Preferably, the protective structure comprises a protective cover and a rubber film, wherein the protective cover is arranged on the outer side of the threaded rod and the pointed rod, and the rubber film is arranged on the inner upper end surface of the protective cover.

[0009] Preferably, the protective structure further comprises a drying pad and absorbent cotton, wherein a drying pad is arranged at the lower end of the interior of the protective cover, and absorbent cotton is arranged inside the drying pad.

[0010] Preferably, the protective component includes an inner waterproof layer and an epoxy resin anti-corrosion coating layer, wherein the outer surfaces of the transverse guardrail piles and the longitudinal guardrail piles are provided with the epoxy resin anti-corrosion coating layer, and the inner waterproof layer is provided on the surface of the epoxy resin anti-corrosion coating layer.

[0011] Preferably, the protective component further comprises an outer waterproof layer and a wear-resistant coating layer, wherein the wear-resistant coating layer is arranged on the surface of the inner waterproof layer, and the outer waterproof layer is arranged on the surface of the wear-resistant coating layer.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a fixing assembly so that the threaded rod is fixed by the thread at the bottom of the longitudinal guardrail pile, and the pointed rod at the lower end can conveniently drive the threaded rod to be inserted into the soil, so that the structure of the longitudinal guardrail is more stable during installation, and the protective cover can shield the pointed rod, which is safer.

[0014] 2. The utility model is provided with a protective component, so that the surface of the horizontal guard piles and the longitudinal guard piles are coated with epoxy resin anti-corrosion coating for anti-corrosion protection. The wear-resistant coating layer makes it not easy to wear. The inner waterproof layer and the outer waterproof layer are doubly moisture-proof to avoid damage by moisture, and the protective effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the utility model;

[0017] Figure 3 It is a cross-sectional view of the fixing assembly of the utility model;

[0018] Figure 4 It is a cross-sectional view of the protection component of the utility model;

[0019] In the figure: 1. foundation pit wall; 2. horizontal retaining piles; 3. protection components; 31. outer waterproof layer; 32. wear-resistant coating layer; 33. inner waterproof layer; 34. epoxy resin anticorrosive coating layer; 4. fixing components; 41. threaded plug rod; 42. protection structure; 421. protective cover; 422. drying pad; 423. absorbent cotton; 424. rubber film; 43. pointed rod; 44. threaded groove; 5. corbel; 6. longitudinal retaining piles; 7. supporting device; 8. inclined beam; 9. adjusting device; 10. fixing plate; 11. supporting beam; 12. concave wedge plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 1-4 The utility model provides the following technical solutions: a combined supporting device for deep foundation pit excavation, comprising a foundation pit wall 1, a transverse retaining pile 2 is arranged on the inner surface of the foundation pit wall 1, a longitudinal retaining pile 6 is arranged on the surface of the transverse retaining pile 2, a fixing component 4 is arranged at the bottom of the longitudinal retaining pile 6, a protective component 3 is arranged on the surface of the transverse retaining pile 2 and the longitudinal retaining pile 6, a concave wedge plate 12 is arranged on the upper end of the longitudinal retaining pile 6, a supporting beam 11 is arranged on the surface of the concave wedge plate 12, an adjusting device 9 is arranged between the two groups of supporting beams 11, a corbel 5 is arranged on the side surface of the longitudinal retaining pile 6, a fixing plate 10 is arranged inside the supporting beam 11, an inclined beam 8 is arranged between the corbel 5 and the fixing plate 10, and a supporting device 7 is arranged between the inclined beam 8 and the concave wedge plate 12.

[0023] Specifically, the fixing assembly 4 includes a threaded rod 41, a protective structure 42, a pointed rod 43 and a threaded groove 44, wherein the threaded groove 44 is provided inside the lower end of the longitudinal retaining pile 6, the threaded rod 41 is provided inside the threaded groove 44, the pointed rod 43 is provided at the lower end of the threaded rod 41, and the protective structure 42 is provided on the surface of the threaded rod 41 and the pointed rod 43.

[0024] By adopting the above technical solution, the threaded rod 41 is fixed in the thread groove 44, and the protective structure 42 is removed. The pointed rod 43 can conveniently drive the threaded rod 41 to be inserted into the soil, thereby making the structure of the longitudinal retaining pile 6 more stable.

[0025] Specifically, the protective structure 42 includes a protective cover 421 and a rubber film 424, wherein the protective cover 421 is disposed outside the threaded rod 41 and the pointed rod 43, and the rubber film 424 is disposed on the upper end surface of the inner part of the protective cover 421.

[0026] By adopting the above technical solution, the protective cover 421 is put on the surface of the threaded rod 41, which can prevent the sharp rod 43 from causing harm to the staff during transportation. The rubber film 424 can enhance friction and produce extrusion when in contact with the threaded rod 41 to stabilize the protective cover 421.

[0027] Specifically, the protective structure 42 further includes a drying pad 422 and a water-absorbing cotton 423, wherein the drying pad 422 is disposed at the lower end of the interior of the protective cover 421, and the water-absorbing cotton 423 is disposed inside the drying pad 422.

[0028] By adopting the above technical solution, the absorbent cotton 423 in the drying pad 422 can protect the pointed rod 43 to keep it dry.

[0029] When the present embodiment is used, the staff excavates the earth to form a deep foundation pit, and then sets the transverse retaining pile 2 on the inner side of the foundation pit wall 1, embeds the longitudinal retaining pile 6 into one side of the transverse retaining pile 2, fixes the threaded rod 41 in the threaded groove 44, removes the protective structure 42, and the pointed rod 43 can easily drive the threaded rod 41 to be inserted into the soil, so that the structure of the longitudinal retaining pile 6 is more stable, and the adjusting device 9 adjusts the position of the supporting beam 11, and the inclined beam 8 is set between the fixing plate 10 inside the supporting beam 11 and the corbel 5, and the supporting device 7 The inner side of the concave wedge plate 12 is supported, so that two stable triangles are formed between the longitudinal guard pile 6 and the support beam 11, thereby enhancing the compressive strength of the longitudinal guard pile 6 and achieving a good supporting effect. The protective cover 421 is put on the surface of the threaded rod 41 to prevent the pointed rod 43 from causing harm to the workers during transportation. The rubber film 424 can enhance friction and produce extrusion when in contact with the threaded rod 41 to stabilize the protective cover 421. The absorbent cotton 423 in the drying pad 422 can protect the pointed rod 43 to keep it dry.

[0030] Example 2

[0031] The present embodiment is different from the embodiment 1 in that the protection assembly 3 includes an inner waterproof layer 33 and an epoxy resin anti-corrosion coating layer 34, wherein the outer surfaces of the transverse retaining pile 2 and the longitudinal retaining pile 6 are provided with the epoxy resin anti-corrosion coating layer 34, and the inner waterproof layer 33 is provided on the surface of the epoxy resin anti-corrosion coating layer 34.

[0032] By adopting the above technical solution, epoxy resin anti-corrosion coating is applied on the surface of the transverse retaining piles 2 and the longitudinal retaining piles 6 to form an epoxy resin anti-corrosion coating layer 34, which can achieve good anti-corrosion effect, and the inner waterproof layer 33 can prevent the retaining piles from being damaged by moisture.

[0033] Specifically, the protective component 3 further includes an outer waterproof layer 31 and a wear-resistant coating layer 32, wherein the wear-resistant coating layer 32 is disposed on the surface of the inner waterproof layer 33, and the outer waterproof layer 31 is disposed on the surface of the wear-resistant coating layer 32.

[0034] By adopting the above technical solution, the wear-resistant coating layer 32 can prevent the retaining pile from being worn during use, and the outer waterproof layer 31 can further achieve a moisture-proof effect.

[0035] When this embodiment is used, epoxy resin anti-corrosion coating is applied on the surface of the transverse retaining piles 2 and the longitudinal retaining piles 6 to form an epoxy resin anti-corrosion coating layer 34, which can have a good anti-corrosion effect. The inner waterproof layer 33 can prevent the retaining piles from being damaged by moisture. The wear-resistant coating layer 32 can prevent the retaining piles from being worn during use. The outer waterproof layer 31 can further have a moisture-proof effect.

[0036] The structure and working principle of the support device 7 and the adjustment device 9 in the utility model have been disclosed in a deep foundation pit excavation support device disclosed in Chinese patent application No. 201820633736.6. The working principle of the support device 7 is a spring, and the reaction force generated makes the support rod in the sleeve rod support the inner side of the concave wedge plate 12. The working principle of the adjustment device 9 is to rotate the adjustment gear to drive the threaded rod to rotate inside the support beam 11, thereby adjusting the distance between the concave wedge plates 12.

[0037] Working principle and use process of the utility model: When the utility model is used, the staff excavates the earth to form a deep foundation pit, and then sets the transverse retaining pile 2 on the inner side of the foundation pit wall 1, embeds the longitudinal retaining pile 6 into one side of the transverse retaining pile 2, fixes the threaded rod 41 in the threaded groove 44, removes the protective structure 42, and the pointed rod 43 can easily drive the threaded rod 41 to be inserted into the soil, so that the structure of the longitudinal retaining pile 6 is more stable, and the adjustment device 9 adjusts the position of the support beam 11, and the inclined beam 8 is set between the fixed plate 10 and the corbel 5 inside the support beam 11, and the support device 7 supports the inner side of the concave wedge plate 12, so that two stable triangles are formed between the longitudinal retaining pile 6 and the support beam 11, which strengthens the longitudinal retaining The compressive strength of the pile 6 has a good supporting effect. The protective cover 421 is put on the surface of the threaded rod 41 to prevent the pointed rod 43 from causing harm to the staff during transportation. The rubber film 424 can enhance friction and produce extrusion when in contact with the threaded rod 41 to stabilize the protective cover 421. The absorbent cotton 423 in the drying pad 422 can protect the pointed rod 43 to keep it dry; the surface of the horizontal retaining pile 2 and the longitudinal retaining pile 6 is coated with epoxy resin anti-corrosion coating to form an epoxy resin anti-corrosion coating layer 34, which can have a good anti-corrosion effect. The inner waterproof layer 33 can prevent the retaining pile from being damaged by moisture. The wear-resistant coating layer 32 can prevent the retaining pile from wear during use. The outer waterproof layer 31 can further have a moisture-proof effect.

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

Claims

1. A combined support device for deep foundation pit excavation, comprising a foundation pit wall, characterized in that: The inner surface of the foundation pit wall is provided with transverse retaining piles, the surface of the transverse retaining piles is provided with longitudinal retaining piles, the bottom of the longitudinal retaining piles is provided with fixing components, the surfaces of the transverse retaining piles and the longitudinal retaining piles are provided with protective components, the upper ends of the longitudinal retaining piles are provided with concave wedge plates, the surfaces of the concave wedge plates are provided with supporting beams, an adjusting device is provided between the two groups of supporting beams, corbels are provided on the side surfaces of the longitudinal retaining piles, a fixing plate is provided inside the supporting beams, an inclined beam is provided between the corbels and the fixing plate, and a supporting device is provided between the inclined beam and the concave wedge plate.

2. A combined supporting device for deep foundation pit excavation according to claim 1, characterized in that: The fixing assembly includes a threaded rod, a protective structure, a pointed rod and a threaded groove, wherein a threaded groove is arranged inside the lower end of the longitudinal guard pile, a threaded rod is arranged inside the threaded groove, a pointed rod is arranged at the lower end of the threaded rod, and a protective structure is arranged on the surface of the threaded rod and the pointed rod.

3. A combined supporting device for deep foundation pit excavation according to claim 2, characterized in that: The protective structure comprises a protective cover and a rubber film, wherein the protective cover is arranged on the outer side of the threaded plug rod and the pointed rod, and the rubber film is arranged on the inner upper end surface of the protective cover.

4. A combined supporting device for deep foundation pit excavation according to claim 3, characterized in that: The protective structure also includes a drying pad and absorbent cotton, wherein a drying pad is arranged at the lower end of the interior of the protective cover, and absorbent cotton is arranged inside the drying pad.

5. The combined supporting device for deep foundation pit excavation according to claim 1, characterized in that: The protection component includes an inner waterproof layer and an epoxy resin anti-corrosion coating layer, wherein the outer surfaces of the transverse guardrail piles and the longitudinal guardrail piles are provided with the epoxy resin anti-corrosion coating layer, and the inner waterproof layer is provided on the surface of the epoxy resin anti-corrosion coating layer.

6. A combined supporting device for deep foundation pit excavation according to claim 5, characterized in that: The protective component also includes an outer waterproof layer and a wear-resistant coating layer, wherein the wear-resistant coating layer is arranged on the surface of the inner waterproof layer, and the outer waterproof layer is arranged on the surface of the wear-resistant coating layer.

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