Foundation pit bottom plate post-pouring belt force-transfer structure and construction method thereof

A construction method and technology of post-pouring belts, which can be used in infrastructure engineering, excavation, construction, etc., can solve problems such as ineffective transmission, foundation pit collapse, etc., and achieve the effect of reducing blocks

Active Publication Date: 2019-08-16
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It cannot effectively transmit and resist the external force on the enclosure structure. After the support is removed, it will have a destructive effect on the bottom plate and the enclosure structure, which may cause accidents such as the collapse of the foundation pit

Method used

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  • Foundation pit bottom plate post-pouring belt force-transfer structure and construction method thereof
  • Foundation pit bottom plate post-pouring belt force-transfer structure and construction method thereof
  • Foundation pit bottom plate post-pouring belt force-transfer structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A post-cast belt force transmission structure for the bottom plate of the foundation pit, such as figure 1 and figure 2 shown, including:

[0035] A plurality of first steel members 2 arranged along the extension direction of the post-casting belt are sandwiched between the bottom plates on both sides of the post-casting belt 6, between the first bottom plate 4 and the second bottom plate 5, and the first steel members The two ends of the member 2 are respectively fully attached to the end faces of the first bottom plate 4 and the second bottom plate 5 to ensure uniform force transmission; the height of the first steel member 2 should be smaller than the height of the post-cast belt 6, and the reserved steel bars shall prevail ; The first steel member 2 can be I-beam, H-beam or assembled and welded with steel plates; The calculation is OK.

[0036] A plurality of corbel force transmission units 3 arranged along the extension direction of the post-casting tape 6 incl...

Embodiment 2

[0050] Embodiment 2 is a further improvement of Embodiment 1 to further enhance the stability of the horizontal force transmission structure of the bottom plate. On the basis of Example 1, as image 3 As shown, a plurality of second steel members 7 are distributed along the extension direction of the post-casting belt 6 , and both ends of the second steel members 7 are buried in the concrete of the bottom plates on both sides of the post-casting belt 6 . The second steel component 7 can be I-shaped steel, H-shaped steel or assembled and welded with steel plates.

Embodiment 3

[0052] Embodiment 3 is a further improvement of Embodiment 1 to further enhance the stability of the horizontal force transmission structure of the bottom plate. On the basis of Example 1, as Figure 4 As shown, at the post-casting belt 6 position, at least one reinforcing bar 9 is welded and fixed on the main reinforcement 8 of the bottom plate on both sides of the post-casting belt 6 , and the reinforcing steel bar is arranged in the same direction as the main rib 8 .

[0053] Further, a reinforcement bar 9 is fixed on both sides of the main bar 8, and the diameter of the reinforcement bar 9 is the same as that of the main bar 8, and its length is more than 1 m. Preferably, a reinforcement bar 9 with a length of 2 m is selected.

[0054] In an optional implementation of this embodiment, a plurality of second steel members 7 are also distributed along the extension direction of the post-cast belt 6, and the two ends of the second steel members 7 are embedded in the concrete o...

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Abstract

The invention provides a foundation pit bottom plate post-pouring belt force-transfer structure and a construction method thereof. The foundation pit bottom plate post-pouring belt force-transfer structure comprises a plurality of first steel members arranged in the extending direction of a post-pouring belt, and a plurality of bracket force-transfer units arranged in the extending direction of the post-pouring belt, wherein the first steel members are clamped between bottom plates on the two sides of the post-pouring belt, each bracket force-transfer unit comprises two brackets and a supporting part, every two brackets are fixed to the upper surfaces of the bottom plates on the two sides of the post-pouring belt correspondingly, and each supporting part is horizontally supported between the two corresponding brackets. According to the foundation pit bottom plate post-pouring belt force-transfer structure and the construction method thereof, the problems that in foundation pit engineering, small block bottom plates are insufficient in strength, and a post-pouring belt cannot transfer force effectively can be solved effectively; the safety of a foundation pit is ensured, and the poured bottom plates are not affected and damaged; and blocks of the bottom plates can be shrunk under the premise of ensuring the safety of the foundation pit, and construction of an upper structure isnot affected to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a force-transmitting structure and a construction method of a foundation pit bottom plate post-cast belt. Background technique [0002] In the excavation construction of underground structures in soft soil areas, it is often necessary to take support measures on the side of the foundation pit to ensure that the soil outside the foundation pit does not deform and slip into the foundation pit. When the depth of the basement is large or the surrounding conditions of the foundation pit are complex and sensitive to soil deformation, the support method of internal support plus cast-in-place piles around the pit or continuous wall is often used. During the excavation construction, the supporting structure is constructed according to the design requirements of the supporting structure. Then, when the main body of the basement structure is constructed upwards from the founda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04
Inventor 施群凯陶荣江张雄
Owner CHINA MCC20 GRP CORP
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