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Foundation trench support technology for secondary branch pipe network project construction

The technology of foundation trench and branch pipe is applied in the engineering technology application field of foundation trench support, which can solve the problems that the work cannot be completed according to the established requirements, the supporting structure cannot be reused, and the construction technology of the supporting structure is high, and the reinforcement effect is achieved. Good, shortening the construction period, and the effect of small environmental constraints

Inactive Publication Date: 2020-07-10
SINOHYDRO HARBOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Problems existing in the traditional foundation trench support structure: 1. The construction process is complicated. The foundation trench project requires relatively high construction technology and many links for the support structure, and the support structure cannot be reused. Although the support structure is temporary, However, it is permanently buried around the building, causing environmental pollution or affecting the construction of adjacent buildings.
The construction time of the foundation trench is long, which gives the time and space for the deformation of the rock and soil mass and the support structure, and the process content is complicated, which is not suitable for rapid foundation trench engineering
2. Monitoring is expensive and has many links. The components are buried once and there is no chance of repeated use.
There are many links in the installation of components, which require the joint efforts of the construction party and the monitoring party and the use of various technological measures, and often the work cannot be completed according to the established requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The river basin comprehensive treatment project in a southern city has a drainage area of ​​1249k㎡, 107 main and tributary rivers, involving 112 villages (communities) in 7 towns. Among them, water environment treatment projects include: source rain and sewage diversion reconstruction, improvement of secondary branch pipe network, river outlet regulation, river surge comprehensive treatment (silt dredging and river channel buffer zone), various controlled overflow storage tank projects, ecological Water replenishment project and one city-coordinated sediment treatment and solidification plant.

[0033] Hydrological conditions

[0034] (1) Groundwater

[0035] The pore water existing in the Quaternary soil layer has an average water volume and medium permeability, and the discharge method is natural evaporation and vertical infiltration; the site environment category belongs to Class III.

[0036] (2) Corrosive evaluation of water

[0037] According to the comprehensive...

Embodiment 2

[0077] A foundation trench support process for the construction of secondary branch pipe network projects, comprising the following steps:

[0078] (1) Fabrication of steel sheet piles;

[0079] (2) Construction preparations for the secondary branch pipe network;

[0080] (3) Surveying and setting out: according to the pipeline coordinate data of the secondary branch pipe network provided by the design, carry out the setting out of the pipeline axis of the construction section, use GPS combined with the total station to carry out detailed measurement and setting out work, and determine the specific location of the construction;

[0081] (4) Destruction of the road surface;

[0082] (5) Driving steel sheet piles: steel sheet piles are driven by a crawler excavator with a vibratory hammer machine. A longitudinal steel beam is respectively installed on the side steel sheet piles along the length direction of the foundation groove. Both ends of the support are welded to the lon...

Embodiment 3

[0098] A foundation trench support process for the construction of secondary branch pipe network projects, comprising the following steps:

[0099] (1) Fabrication of steel sheet piles;

[0100] (2) Construction preparations for the secondary branch pipe network;

[0101] (3) Surveying and setting out: according to the pipeline coordinate data of the secondary branch pipe network provided by the design, carry out the setting out of the pipeline axis of the construction section, use GPS combined with the total station to carry out detailed measurement and setting out work, and determine the specific location of the construction;

[0102] (4) Destruction of the road surface;

[0103] (5) Driving steel sheet piles: steel sheet piles are driven by a crawler excavator with a vibratory hammer machine. A longitudinal steel beam is respectively installed on the side steel sheet piles along the length direction of the foundation groove. Both ends of the support are welded to the lon...

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Abstract

The invention discloses a foundation trench support technology for secondary branch pipe network project construction. The technology comprises the steps of (1) steel plate pile production; (2) secondary branch pipe network construction preparation; (3) surveying and setting-out; (4) road surface breakage and removal; (5) steel plate pile striking; (6) foundation trench excavation; (7) secondary branch pipe construction; (8) foundation trench backfilling; and (9) steel plate pile pull-out. In the whole construction process, according to the principles of high efficiency, economy and environmental friendliness, the construction period is greatly shortened, engineering efficiency is improved, the stability of a foundation trench in secondary branch pipe network engineering is guaranteed, andthe safety of constructors and equipment is ensured.

Description

technical field [0001] The invention relates to the engineering technology application field of foundation trench support, in particular to a foundation trench support process used in the construction of secondary branch pipe network projects. Background technique [0002] In order to make the urban and rural living environment more and more beautiful, our country is comprehensively promoting the pace of urban and rural domestic sewage treatment projects. At present, most of the villages do not have sewage pipes in the secondary branch network, and the drainage facilities are seriously lagging behind. Most of the sewage is discharged into farmland and streams nearby through ditches, causing certain pollution to the water bodies in towns and villages, seriously affecting the quality of life of residents and the city. The ecological appearance restricts the development of towns and villages. [0003] Urban and rural water environment treatment projects include: source rain an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/08E02D5/04E01C23/09C21D9/00
CPCC21D9/0081E01C23/0906E02D5/04E02D17/08E02D17/083
Inventor 尚伯忠王志岩张道清张远金王丰建董文旗张航赵立志
Owner SINOHYDRO HARBOR CO LTD
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