CN212249419U

CN212249419U - 500 cubic concrete soil collecting pit

Info

Publication number: CN212249419U
Application number: CN202020431209.4U
Authority: CN
Inventors: 潘淡浓; 俞海波; 庄国强; 傅珺; 许颖儿; 蔡晓瑛
Original assignee: Hongrun Construction Group Co Ltd
Current assignee: Hongrun Construction Group Co Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-12-29
Anticipated expiration: 2030-04-01

Abstract

The utility model provides a 500 cube concrete soil collection hole, include: 2.5m deep earthwork is dug downwards on the original site, the excavation range is 10.4 multiplied by 45.4m, the plane size of a substrate is 5.4 multiplied by 40.4m, a 100mm gravel cushion layer is paved at the bottom of a foundation pit, a bottom plate concrete with the thickness of 200mm is poured by a vertical mold, and a side wall concrete with the thickness of 200mm is poured by inner and outer vertical molds; pouring ground concrete with the thickness of 100mm and side wall concrete with the height of 300mm on the ground; the width of the ground concrete was 1.2m on both sides in the width direction of the soil collection pit and 3m on both sides in the longitudinal direction.

Description

500 cubic concrete soil collecting pit

Technical Field

The utility model relates to an important interim facility that uses on urban rail transit engineering, the construction of suitable subway interval shield unearthing.

Background

In urban rail transit construction, most of interval tunnels are constructed by adopting a shield method, and the earth volume of a ring of pipe pieces needs to be pushed in the shield pushing process. In order to complete the construction task as soon as possible in the construction period and simultaneously ensure the safety in the shield propelling process, the segments need to be continuously propelled and assembled in the rest 20 hours except for maintenance in about 4 hours a day, and in the shield propelling process, earthwork cannot be temporarily stacked in an interval tunnel and must be transported to the ground synchronously with the shield propelling. Subway construction is often in urban areas, the traffic is busy in daytime, the traffic management department does not allow a construction unit to go out of the earth in daytime, and the earth must go out when the traffic is not busy at night, so a temporary construction facility earth collecting pit must be arranged on a shield construction site.

The soil collecting pit can be a reinforced concrete soil collecting pit or a steel structure soil collecting pit, can be arranged on the ground, can also be arranged under the ground, and can also be arranged on the ground in half and arranged under the ground in half.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: digging a foundation pit under the ground, pouring a reinforced concrete bottom plate after treating a substrate, then pouring a reinforced concrete side wall, then pouring ground concrete and connecting high side wall concrete, and manufacturing a reinforced concrete soil collecting pit of 500 cubic meters.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: 2.5m deep earthwork is excavated downwards in the original place, the excavation range is 10.4 multiplied by 45.4m, and the excavation time is 1: 1, slope releasing is carried out, the plane size of a base is 5.4 multiplied by 40.4m, a 100mm gravel cushion layer is paved at the bottom of a foundation pit, bottom plate reinforcing steel bars are bound on the gravel cushion layer, then bottom plate concrete with the thickness of 200mm is poured in a vertical mold, the bottom plate reinforcing steel bars adopt a single-layer bidirectional threaded reinforcing steel bar layer with the diameter of 12mm, and the longitudinal and transverse intervals are 200 multiplied by 200 mm. And then binding side wall reinforcing steel bars, wherein the diameter of each of the side wall transverse reinforcing steel bars and the side wall vertical reinforcing steel bars is 16mm, the transverse distance and the vertical reinforcing steel bars are 200 multiplied by 200mm, and then pouring side wall concrete with the thickness of 200mm in an inner side formwork and an outer side formwork. And removing the mold after the concrete of the side wall reaches the strength, and backfilling earthwork on the outer side of the side wall to the original ground elevation. And then binding ground reinforcing steel bars and the rest side wall reinforcing steel bars, wherein the ground reinforcing steel bars are single-layer bidirectional threaded reinforcing steel bars with the diameter of 12mm, the longitudinal and transverse intervals are 200 multiplied by 200, and after the side wall formwork on the ground is erected, pouring 100mm thick ground concrete and 300mm high side wall concrete on the ground. The 300mm high side wall concrete on the ground can prevent that ground water from flowing into in the soil collection hole, prevents that the soil in the soil collection hole from being soaked by water, influences unearthed. The floor plan size was 5.4 × 40.4m, the width of the ground concrete was 1.2m on both sides in the width direction of the soil collection pit, and 3m on both sides in the length direction of the soil collection pit.

Compared with the prior art, the utility model has the advantages of: the construction material reinforcing steel bars and concrete which are commonly used in engineering are utilized, the material source is wide, the processing of an outside manufacturer is not required, the construction material can be produced by utilizing equipment which is commonly used in a construction site, compared with an underground reinforced concrete soil collection pit, the construction material is convenient to enter and exit soil, the damage is not easy, and the influence on the environment is small.

This utility model device can practice thrift the manual work for the construction progress practices thrift the cost. This utility model device is through actual engineering repetitious usage, and the demonstration can satisfy the requirement of intensity, rigidity, stability and wholeness.

Drawings

Fig. 1 is a schematic structural plan view of the present invention.

Fig. 2 is a schematic view of the structure section a-a of the present invention.

Fig. 3 is a schematic view of the structural section B-B of the present invention.

Detailed Description

This collection soil hole generally ends at subway station major structure, is under construction before the major structure top backfill soil, that is to say the collection soil hole sets up at the major structure top. If not, a foundation pit is dug under the ground, a reinforced concrete bottom plate is poured after the base treatment, then a reinforced concrete side wall is poured, and then ground concrete and high side wall concrete are poured to manufacture a reinforced concrete soil collection pit of 500 cubic meters.

The present invention will be described in further detail with reference to drawings.

Fig. 1 is a schematic structural plan view of the present invention. The floor plan size was 5.4 × 40.4m, the width of the ground concrete was 1.2m on both sides in the width direction of the soil collection pit, and 3m on both sides in the length direction of the soil collection pit. The thickness of the side wall of the soil collecting pit is 200 mm.

Fig. 2 and fig. 3 are schematic structural section views of the present invention. The method comprises the steps of digging 2.5m deep earthwork on the original ground, paving a 100mm gravel cushion layer at the bottom of a foundation pit, binding bottom plate reinforcing steel bars on the gravel cushion layer, then pouring bottom plate concrete with the thickness of 200mm by using a vertical mold, wherein the bottom plate reinforcing steel bars are single-layer bidirectional threaded reinforcing steel bars with the diameter of 12mm, and the longitudinal and transverse spacing is 200 multiplied by 200 mm. And then binding side wall reinforcing steel bars, wherein the diameter of each of the side wall transverse reinforcing steel bars and the side wall vertical reinforcing steel bars is 16mm, the transverse distance and the vertical reinforcing steel bars are 200 multiplied by 200mm, and then pouring side wall concrete with the thickness of 200mm in an inner side formwork and an outer side formwork. And removing the mold after the concrete of the side wall reaches the strength, and backfilling earthwork on the outer side of the side wall to the original ground elevation. And then binding ground reinforcing steel bars and the rest side wall reinforcing steel bars, wherein the ground reinforcing steel bars are single-layer bidirectional threaded reinforcing steel bars with the diameter of 12mm, the longitudinal and transverse intervals are 200 multiplied by 200, and after the side wall formwork on the ground is erected, pouring 100mm thick ground concrete and 300mm high side wall concrete on the ground. The 300mm high side wall concrete on the ground can prevent that ground water from flowing into in the soil collection hole, prevents that the soil in the soil collection hole from being soaked by water, influences unearthed.

Claims

1. A500 cubic concrete soil collection pit which characterized in that:

the foundation pit is excavated under the ground, the depth is 2.5m, the excavation range is 10.4 multiplied by 45.4m, and the plane size of a substrate is 5.4 multiplied by 40.4 m;

paving a 100mm gravel cushion layer on the substrate, and paving a bottom plate concrete with the thickness of 200mm on the gravel cushion layer;

the foundation pit is provided with side wall concrete with the thickness of 200 mm;

on the ground, with 100mm thick ground concrete;

on the ground, the side wall concrete with height of 300mm, the width direction of soil collection pit is 1.2m width, and the length direction is 3m width.