Connection structures between foundation pit support piles and outer walls of basement and construction method

Abstract

The invention discloses connection structures between foundation pit support piles and outer walls of a basement and a construction method. Each structure comprises a top beam (2) and an outer wall (3) of a basement, wherein a concrete bracket (4) protrudes out of the outer surface of the outer wall (3) of the basement; a concrete ring beam (5) is arranged on the top surface of the top beam (2); and a cross beam (5.2) of the concrete ring beam (5) presses the top surface of the concrete bracket (4). The construction method is characterized by pouring the concrete bracket (4) after pouring the outer wall (3) of the basement and then pouring the concrete ring beam (5) on the top beam (2) so that the cross beam (5.2) of the concrete ring beam (5) presses the top surface of the concrete bracket (4). The connection structures and the construction method have the following beneficial effects: wastes of such accessory structures as the foundation pit support piles (1), the top beams, circuit purlins and the like after construction of the basement structure can be avoided and the number of anti-buoyancy piles can be reduced.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a connection structure and construction method between foundation pit support piles and basement exterior walls. Background technique [0002] With the rapid development of urban infrastructure and the continuous expansion of the basement space of buildings, foundation pit support technology has also been continuously improved. The construction process of the foundation pit support structure and the basement in the foundation pit in the prior art is as follows: firstly, a circle of support piles is built on the edge of the foundation pit; Internal support; then dig the foundation pit to the level of the purlins on the first floor and pour the purlins and inner supports of this level inside each support pile; then continue to dig down to the level of the next layer of purlins and pour the Purlins and internal supports; repeat the process of digging down and pouring purlins and in...

AI Technical Summary

Problems solved by technology

[0003] Can know from the construction method of above prior art: after the basement construction of building is finished, at this moment the basement exterior wall plays a role of support and protection to the basement structure, and the foundation pit supporting retaining pile and crown beam, enclosure buried in the soil body There is no connection between the auxiliary structures such as purlins and the basement. That is to say, the auxiliary structures such as foundation pit support piles, crown beams, purlins, etc. are only temporary for supporting and protecting the foundation pit when digging the foundation pit and constructing the basement structure. However, once the basement roof is poured and the construction of the basement structure is completed, the supporting piles, crown beams, purlins and other auxiliary structures have completed their mission, and they have no effect on the building and cannot be reused. The cost of auxiliary structures such as piles, crown beams, and purlins is relatively high, often accounting for more than 60% of the total support structure of the foundation pit. Huge waste, driving up the cost of construction projects

[0004] In order to prevent the floor of the basement from rising when the groundwater level rises, causing the floor to move upwards and causing local damage to the building, the prior art is to install multiple anti-buoyancy piles under the floor of the basement to offset the friction between the piles and the soil. Groundwater buoyancy, in order to meet the strength requirements for resisting groundwater buoyancy, the number of anti-buoyancy piles is more, the cost is higher, and the construction labor intensity is also greater

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