A construction method with beam-slab support

Abstract

The invention provides a novel beam slab supported construction method. The novel beam slab supported construction method comprises earth-digging a foundation pit at a depth of 1.1 meters from the bottom of a reinforced concrete trestle beam; setting up framed bents inside the dug area 1.1 meters from the bottom of the reinforced concrete trestle beam, and setting up a beam slab bottom die between the bottom of the reinforced concrete trestle beam and the framed bents; binding trestle beam slab reinforcing bars onto the beam slab bottom die; setting up side die plates on both sides of the beam slab bottom die; pouring concrete onto the trestle beam slab reinforcing bars to form a trestle beam slab; removing and recycling the side die plates and the framed bents. According to the novel beam slab supported construction method, after concrete maintenance of the trestle beam slab is completed, the framed bents and the side die plates can be directly removed to achieve reasonable recycling; relatively low requirements on earth digging elevation can be obtained, and cushions can be simply relatively flat, so that construction can be facilitated and the schedule can be accelerated. Besides, according to the novel beam slab supported construction method, anti-skidding angle steels are connected with the trestle beam slab reinforcing bars into a whole, so that durable and reliable anti-skidding effects can be obtained.

Description

technical field [0001] The invention relates to a construction method supported by beams and slabs. Background technique [0002] Deep foundation pit construction is an underground concealed project, and there are certain risks, especially in the excavation and support construction stage, to complete the support and excavation work faster and safer, reduce the exposure time of the foundation pit, prevent accidents, and partially improve the construction Technology, forming a more complete set of technical measures, has important guiding significance for similar projects. [0003] There are trestles in the supporting area of ​​the excavation of large foundation pits. There are two construction processes for existing similar projects: Reinforced concrete trestle construction process: [0004] The first method: foundation pit excavation to the bottom of the reinforced concrete trestle bridge and the bottom surface of the cushion layer of the trestle slab → construction of the ...

AI Technical Summary

Problems solved by technology

[0007] 1. High requirements for excavation elevation control and high cushion flatness

[0008] 2. It is relatively difficult to backfill the support beam after the formwork is erected, which may damage the completed support beam formwork or backfill soil into the support formwork, and the corresponding construction time will be prolonged

[0009] 3. If figure 1 As shown, since the side formwork 100 and the short wooden frame formwork 101 are connected to the ground 103 and the concrete 104 of the trestle slab, the recovery of the side formwork can only be carried out when the second layer of soil is excavated, and the excavation process or soaking in the soil body , the side formwork is damaged and cannot be reused, and the short wooden frame formwork is a one-time material and cannot be reused

[0010] 4. It is relatively difficult to remove the formwork after the second layer of soil is completed, and it is time-consuming and labor-intensive

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