Unitized rapid construction method of cover and excavation top-down metro transfer station

A construction method, cover-and-excavation technology, applied to artificial islands, water conservancy projects, infrastructure projects, etc., can solve the problems of lagging construction period, high construction cost, long construction period, etc., achieve accurate positioning and rapid construction, and reduce construction costs. Effect of improving cost and excavation efficiency

Active Publication Date: 2017-01-04
LANGFANG NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the single excavation method affected the excavation speed of the station, and the construction period was seriously delayed; the conventional intermediate support pile construction method had a long construction period and complicated procedures, and during the construction process, workers had to go down to the bottom of the hole to remove the concrete and position the positioner Installation, there are many unsafe factors, the construction period of a single steel pipe column is as long as 10 to 20 days, and the construction cost is also high, which has certain limitations

Method used

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  • Unitized rapid construction method of cover and excavation top-down metro transfer station
  • Unitized rapid construction method of cover and excavation top-down metro transfer station
  • Unitized rapid construction method of cover and excavation top-down metro transfer station

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Experimental program
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Effect test

Embodiment

[0028] 1. Unearthed by the combined method of cover-excavation and reverse-work stations

[0029] 1.1 Construction preparation

[0030] 1) Qualified and reliable safety railings and kick baffles are installed around the foundation pit to prevent accidents caused by falling objects.

[0031] 2) There must be sufficient illumination around the site and in the foundation pit.

[0032] 3) It is not allowed to pile up messy and scattered materials around the foundation pit to ensure the safety of construction workers and prevent debris from falling into the pit and injuring workers.

[0033] 4) Sufficient steel supports for the foundation pits of the two structural construction sections have been prepared on site and have passed the inspection. The jack pressurization equipment is in good operation, and the pressure gauge has been checked and calibrated.

[0034] 5) Further confirm that the underground pipeline has been removed.

[0035] 6) Confirm the current status of surround...

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Abstract

The invention discloses a unitized rapid construction method of a cover and excavation top-down metro transfer station. The method comprises the steps that the characteristics of a transfer station cross route construction field are utilized, and a slope ramp and vertical shaft combined excavating method is adopted; according to the characteristics of permanent steel pipe columns, a construction method of inserting vertical hydraulic insert pipes into steel pipe columns is adopted to install the permanent steel pipe columns, and a unitized rapid construction technology of the cover and excavation top-down metro transfer station is formed. The unitized technology remarkably improves the excavation efficiency of the cover and excavation top-down station, also greatly simplified a middle pile column constriction process, achieves accurate positioning and rapid construction (the average time for completing installation of each steel pipe column is 10-20 hours), and the safety risks and construction costs are reduced.

Description

technical field [0001] The invention relates to a construction method of an urban subway station, in particular to a complete set of rapid construction method for a subway transfer station with cover-excavation and reverse operation. Background technique [0002] As the passenger transfer hub of different urban subway lines, the subway transfer station has a large scale and strong importance. In order to ensure the safety of construction and the rapid recovery of traffic, the cover-excavation method is the most commonly used basic construction method. The cover-excavation method is to excavate from the ground to a certain depth, then close the top, and the rest of the lower part is constructed under the closed top cover. This method is the best way to build underground multi-storey buildings in loose soil layers. It is also considered to be used by humans when they develop deeper underground. For subway transfer station cover-excavation construction, how to excavate quickl...

Claims

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Application Information

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IPC IPC(8): E02D29/045
CPCE02D29/045
Inventor 韩同银王丽玫张宏洲张云霞冷毅飞
Owner LANGFANG NORMAL UNIV
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