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Construction method of underground waterproofing and exterior wall structure in narrow space of deep foundation pit

An underground waterproofing and construction method technology, which is applied in the direction of basic structure engineering, walls, excavation, etc., can solve the problems of difficulty in ensuring the flatness and verticality of the concrete surface of the fertilizer tank, waste of materials and labor, and inconvenient construction operations, etc., and achieve good results. Waterproof construction effect, labor saving, and effect of strengthening waterproof effect

Active Publication Date: 2017-11-10
BEIJING FOURTH CONSTR & ENG
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Problems solved by technology

[0008] The invention provides a construction method for underground waterproofing and exterior wall structure in a narrow space of a deep foundation pit, which aims to solve the problems of inconvenient construction operation, waste of materials and labor, and poor waterproof quality in the construction of underground waterproofing and exterior wall structures in a deep foundation pit in a narrow space problems, and the technical problem that it is difficult to guarantee the flatness and verticality of the concrete surface of the fertilizer tank

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  • Construction method of underground waterproofing and exterior wall structure in narrow space of deep foundation pit
  • Construction method of underground waterproofing and exterior wall structure in narrow space of deep foundation pit
  • Construction method of underground waterproofing and exterior wall structure in narrow space of deep foundation pit

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[0039] see example Figure 1-6 As shown in the figure, this kind of construction method for underground waterproofing and exterior wall structure in narrow space of deep foundation pit, the construction steps are as follows:

[0040] see Figure 1-4 As shown, step 1, firstly, a single-sided mold is supported on the outside of the fertilizer groove between the slope protection pile 1 and the structural outer wall 3. Drill the first hole on the slope protection pile 1 at a distance of 350mm from the bottom surface of the foundation pit, and drill the second hole at a distance of 700mm upward from the first hole. Planting reinforcement bolts 71 are implanted in the holes, the angle of the reinforcement planting bolts 71 implanted in the slope protection pile 1 is 30 degrees, and the depth of the reinforcement reinforcement is 200mm. Angle steel 8 is arranged horizontally at the planting reinforcement between the slope protection piles 1, and the angle steel 8 and the planting r...

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Abstract

The invention provides a construction method of underground water prevention and exterior wall structures of narrow space of a deep foundation pit. The construction method is used for a construction project of a deep foundation pit with narrow space in an urban center, concrete of a reserved trough is poured by single-side formworks arranged outside slope protection piles, a water prevention construction operation surface with outside prevention and inside attachment is formed, and meanwhile, the problem of backfilling of the reserved trough is solved; then construction of an exterior wall structure is carried out by the single-side formworks again; the problem that construction of exterior water prevention of the exterior wall, soil backfilling of the reserved trough, underground water prevention rolls and an underground structure exterior wall cannot be carried out due to insufficient space under the special condition is solved, water prevention construction of the exterior wall of a basement can be smoothly carried out effectively, and leakage is prevented. The construction method is clear in construction sequence and good in construction water prevention effect.

Description

technical field [0001] The invention relates to the field of deep foundation pit underground waterproofing and outer wall structure construction, in particular to a deep foundation pit underground waterproofing and outer wall structure construction method in a narrow space. Background technique [0002] At present, the underground waterproofing construction of deep foundation pits in narrow spaces mainly faces the following problems under special conditions: [0003] (1) Under the premise that the construction unit pursues the maximization of the construction area of ​​the building, there is a situation that the area of ​​the foundation pit occupies more than 90% of the available construction area on the site in the central area of ​​the city and the densely built area. Such situations are often accompanied by the existence of ultra-deep foundation pits. The construction deviation of the slope protection piles and the narrow design and construction surface make the waterproo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E04B2/00
CPCE02D17/04E04B2/00
Inventor 陈达非张文亮刘滨杨洋耿春余董曦
Owner BEIJING FOURTH CONSTR & ENG
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