Open caisson construction method of reinforced concrete for soft soil layer

A reinforced concrete and construction method technology, applied in caissons, infrastructure engineering, construction, etc., can solve problems such as troublesome construction and difficulty in controlling the verticality of caisson sinking, so as to save equipment usage costs, avoid digging deep pot bottoms, and easily Repair effect

Inactive Publication Date: 2011-08-17
FUJIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, these two construction methods are often difficult to control the verticality of the sinking of the caisson, and the construction is also troublesome.

Method used

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  • Open caisson construction method of reinforced concrete for soft soil layer
  • Open caisson construction method of reinforced concrete for soft soil layer
  • Open caisson construction method of reinforced concrete for soft soil layer

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Embodiment Construction

[0018] Such as figure 1 , the present invention is a kind of reinforced concrete caisson construction method that is used for soft soil stratum, specifically comprises the following steps: 10, removes the obstacle at the well wall blade bottom of caisson, provides water by water source, water pressurization is greater than 1.2 MPa high-pressure water; 20. Utilize the above-mentioned high-pressure water to impact the soil in the casing, and the soil is broken and mixed with water from the water gun to form mud; 30. Suction the above-mentioned mud and transport it to the outside of the caisson casing; 40. The soil surface in the caisson body decreases gradually, and the caisson body sinks continuously by its own weight. After the mud in step 30 is transported outside the casing of the caisson, it can be settled, and then the settled water is transported to the water source in step 10.

[0019] The following describes in detail in combination with specific embodiments. Such as ...

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PUM

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Abstract

The invention provides an open caisson construction method of reinforced concrete for a soft soil layer. The open caisson construction method specifically comprises the followings steps: 10, barriers on the bottom of a wall blade of an open caisson are removed, water is supplied from a water source, and the water is pressurized to a pressure higher than 1.2 MPa; 20, the high-pressure water is utilized to impact soil mass in a tube body, and the broken soil mass and water sprayed from a water gun are mixed into slurry; 30, the slurry is pumped and delivered to the outside of the tube body of the open caisson; and 40, the tube body of the open caisson subsides gradually due to self gravity along with gradual reduction of soil surface in the tube body of the open caisson. The open caisson construction method disclosed by the invention can avoid over-digging of the bottom and the phenomena of sudden subsidence of the open caisson because hydraulic power is utilized to break oil, is easy to ensure the construction quality of the open caisson, can effectively control the soil breaking program and position, can enable the open caisson to subside steadily, is convenient for controlling the final subsiding elevation of the open caisson, and reduces the engineering cost.

Description

【Technical field】 [0001] The invention relates to a construction method of a reinforced concrete caisson, in particular to a construction method of a reinforced concrete caisson which utilizes hydraulic power to flush and suck mud and discharge soil. 【Background technique】 [0002] The caisson foundation has many advantages such as strong integrity, good stability, large bearing area, large vertical load and horizontal load, low cost, and good seismic performance. It has been widely used in many fields. . [0003] The existing reinforced concrete caisson construction method generally adopts manual excavation or large-scale mechanical excavation, and the subsidence rate will be too fast or sudden subsidence phenomenon will occur. The sinking of caissons by manual excavation is low in efficiency and labor-intensive; while the sinking of caissons by mechanical excavation requires large-scale mechanical equipment, high energy consumption, high cost, and hidden dangers in constr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D23/08
Inventor 周继忠庄金平聂小龙蔡雪峰
Owner FUJIAN UNIV OF TECH
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