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: 17 Mar

Type of retaining structure of foundation pit

First, the classification of foundation pit supporting structure: 1. Slope excavation, 2. Retaining support structure, 3. Gravity support structure, 4. Combined support structure; 2. Selection of supporting structure: The selection of supporting structure should be based on the geological conditions of the site, the depth and function of the foundation pit, construction conditions, environmental factors and regional engineering experience, etc., and comprehensively consider the following factors:
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: 16 Mar

Characteristics and design requirements of foundation pit engineering

Foundation pit engineering usually refers to the construction site to build a set of foundation pit supporting structure system, forming the construction enclosure of underground engineering (also known as foundation pit enclosure structure), in order to smoothly carry out earth excavation and underground engineering construction.
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: 15 Mar

Causes of uneven settlement of foundation

The CAUSES of uneven settlement of foundation are: 1, geological factors, 2, investigation factors, 3, design factors, 4, construction factors, 5, other factors
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: 14 Mar

How to deal with deflection of pile foundation

The deviation of pile foundation is usually caused by the poor soil quality or the large difference of soil quality. Deflection treatment of pile foundation can be generally adopted the following methods: 1, change the axis position, 2, pile position correction, 3, add ox leg, 4, pile group treatment, 5, in situ re-drilling, 6, push the top method (apply horizontal thrust at the top of the pile) to reset the pile
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: 13 Mar

Prestressed bolt and stiffened pile technology

Rock and soil bolt foundation is the foundation to bear tangential force or overturning moment. Generally, the construction technology such as prestressed bolt and rotary jet mixing stiffened pile anchor can be used.
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: 12 Mar

FDP fast soft foundation treatment

FDP fast soft foundation treatment technology is a soft foundation treatment technology based on the principle of vacuum preloading technology and a number of innovative technologies. It is a set of unimpeded drainage plate technology (Flow), straight and sand free mat technology (Direct)& NBSP; , intermittent charging technology (Pressurize) and vacuum energy saving technology (Powerless) in the integration of vacuum preloading & have spent (Preloading) technology.
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: 11 Mar

Progress management: a group of steel braces into the stage of demolition

A group of steel supports at the site of Huzhou Inner Ring (Northern Line) Rapid Transformation Project No.2 (referred to as "Huzhou Inner Ring North Line Rapid Transformation Project") are being dismantled. Huzhou Inner Ring North rapid transformation project under the full length of the tunnel1244mIn total, nearly ten thousand tons of steel support should be installed. The project has a large amount of engineering and a long construction period (expected to be one year). At present, there are8The steel support of each plate (total required32Has completed the construction, among which1The concrete construction of each plate has been completed, and the steel support has been removed. Other plates are being built with a first layer of steel support.
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: 10 Mar

High pressure rotary jet grouting pile technology

High-pressure jet grouting pile is a kind of high-pressure jet grouting method. The grouting pipe with special nozzle is inserted into the designed soil depth, and then the cement slurry is shot out of the nozzle in the form of high-pressure jet to impact and cut the soil. The soil and cement slurry are stirred to form a mixed slurry, which then forms a continuous lap cement plus solid.
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: 10 Mar

Selection basis of retaining pile types for foundation pit

There are many types of retaining piles for foundation pit, and each type has its own applicable conditions. The selection of retaining pile types is mainly based on :(1) excavation depth of foundation pit and surrounding environment; (2) the surface area and construction period of the foundation pit; (3) The influence degree of the construction process of retaining pile on the surrounding environment and the disturbance degree of the construction process of retaining pile of foundation pit that the surrounding environment can withstand.
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: 09 Mar

What kind of foundation pit needs to be supported?

When the foundation pit has one of the following characteristics, it needs to be supported :(1) the buildings around the foundation pit are close to the excavation edge of the foundation pit, and the stratum is relatively weak; (2) The surrounding buildings are sensitive to excavation and disturbance; (3) When the excavation depth of the foundation pit is greater than 3 meters, and the vertical retaining structure resisters the deformation caused by the load outside the foundation pit and damages the adjacent buildings and structures, it is necessary to set supports to control the deformation of the foundation pit during the excavation process, so as to ensure the safety of the foundation pit and surrounding environment.
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Shanghai QiangJin Foundation Engineering Co., Ltd.

Tel:400-100-2850

Address:No. 289, Huixian Road, Jiading District, Shanghai

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