Geotechnical Engineering Practice of Multi-Forms of Composite Support of Deep Foundation Pit

2013 ◽  
Vol 838-841 ◽  
pp. 690-696
Author(s):  
Qin He Huang
Keyword(s):  
Geotechnical Engineering ◽  
Engineering Practice ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Double Row ◽  
Deep Foundation Pit ◽  
Composite Support ◽  
Surrounding Environment ◽  
The Cost

A project in Xiamen setting three basement, the surrounding environment is more complex.the depth of the foundation pit is 11.0-16.1m, considering the duration, cost, environment and other factors, different positions of the foundation pit is respectively realized by adoption of double-row piles, pile-anchor retaining, pile-strut bracing structure and other forms of support, excavation practice proved that this composite support effectively support the pit, facilitate the construction, and the cost is relatively low.

scholarly journals Problems and Countermeasures of Double Row Pile Support Structure of Deep Foundation Pit in Geotechnical Engineering

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Yaqi Sun
Keyword(s):  
Geotechnical Engineering ◽  
Quality And Safety ◽  
Deep Foundation ◽  
Support Structure ◽  
Foundation Pit ◽  
Double Row ◽  
Deep Foundation Pit

<p>With the development of geotechnical engineering, the double row pile support technology of deep foundation pit in geotechnical engineering has also been improved. However, at present, there are still problems, which affects the quality and safety of the whole geotechnical engineering, and requires measures to deal with them. This paper first describes the characteristics of double row pile support of deep foundation pit in geotechnical engineering, then analyzes the problems laying in it, and finally puts forward some countermeasures.</p>

Research of Controlling for Pile-Anchor Joint Supporting Structure on Deformation of Deep Foundation Pits

2011 ◽  
Vol 261-263 ◽  
pp. 1809-1813
Author(s):  
Jin Biao Chen ◽  
Qiang Hu ◽  
Yuan Wu Zhou
Keyword(s):  
Soil Properties ◽  
Deformation Mechanism ◽  
Geotechnical Engineering ◽  
Reliability Theory ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Supporting Structure ◽  
Foundation Deformation ◽  
The Stability

The excavation of deep foundation pit is very complex in the field of geotechnical engineering, how to control the deformation of deep foundation pit and protect the environment is of great significance. This paper analyzed the deformation mechanism of pile-anchor joint supporting structure in detail, established a model for deformation controlling based on the reliability theory, and then analyzed the sensitivities of prestressed, pile stiffness, spacing and soil properties to foundation deformation. Combined with an engineering example, this paper verifies the stability and effectiveness of the model for deformation controlling. This study will provide some reference to similar projects.

Research on Application of Deep Foundation Pit Decompression Dewatering Technology and Impact on Surrounding Environment

2013 ◽  
Vol 671-674 ◽  
pp. 101-104
Author(s):  
Dong Dong Zhang ◽  
Jun Wen Ding ◽  
Rong Biao Wang
Keyword(s):  
Engineering Application ◽  
Pumping Test ◽  
Rail Transit ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Hydrogeological Parameters ◽  
Surrounding Environment ◽  
Practical Engineering ◽  
Research On Application

The studies application of deep foundation pit decompression technology focusing on special engineering geological and hydrogeological conditions. Taking foundation pit dewatering of certain rail transit station as an example, designs deep foundation pit decompression precipitation technology scheme with hydrogeological parameters obtained through pumping test, and assesses and monitors its impacts on surrounding environment according to measured data on project site, which has achieved good results in practical engineering application and provides foundation for construction of rail transit lines.

Numerical Simulation Analysis of Isolation Pile-Steel Shotcrete Combined Support of Deep Foundation Pit Excavation

2014 ◽  
Vol 638-640 ◽  
pp. 507-511
Author(s):  
Chong Ma ◽  
Xin Gang Wang ◽  
Bin Hu ◽  
Hong Bing Zhan
Keyword(s):  
Numerical Simulation ◽  
Geotechnical Engineering ◽  
Rapid Development ◽  
Engineering Problem ◽  
Simulation Software ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Support Design ◽  
Deep Foundation Pit ◽  
Design And Construction

The rapid development of deep foundation pit engineering, has become an important part of the urbanization construction, which brings deep excavation support of geotechnical engineering problem research also became a major issue. This paper uses the international well-known geotechnical engineering numerical simulation software FLAC3D, through 3D finite difference numerical calculation and analysis, to better simulation calculation and analysis of deep foundation pit construction site condition, forecast after excavation of the deep foundation pit deformation displacement and dangerous position, analysis of deep foundation pit excavation process isolation pile - steel shotcrete combined support effect. Three dimensional numerical model analysis and calculation in deep foundation pit engineering design and construction scheme optimization with economy is convenient wait for a obvious advantages, can for deep foundation pit excavation of deep foundation pit support design and construction to provide effective basis.

Deep Foundation Pit Engineering Technology Research

2012 ◽  
Vol 256-259 ◽  
pp. 332-335
Author(s):  
Xiang Dong Zhang ◽  
Jin Wei Lv
Keyword(s):  
Rapid Development ◽  
Engineering Practice ◽  
Soil Test ◽  
Technology Research ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Engineering Technology ◽  
Deep Foundation Pit ◽  
Key Technology ◽  
Geotechnical Problems

Deep foundation pit engineering is a comprehensive geotechnical problems, has distinct regional. In recent years, it has become the hotspot in geotechnical engineering. The key technology of deep foundation pit engineering rapid development in recent years such as soil test, the design and construction of retaining and protecting, monitoring, dewater. The use of computers in the calculation theory and monitoring technology of deep foundation pit engineering makes two parts have changed in essential. This article discusses the soil test, retaining and protecting technology and principle, the monitoring and dewater of deep foundation pit engineering. The development of deep foundation pit engineering situation and the problems exist of the development of deep foundation pit engineering, which have important meaning to guide the engineering practice and discipline new fields of explore.

scholarly journals Research on the Mechanical Properties of New Double-Row Pile Supporting Structure Based on an In Situ Study

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Yijun Zhou ◽  
Kuiming Liu ◽  
Fengnian Wang
Keyword(s):  
Bending Moment ◽  
Horizontal Displacement ◽  
Test Site ◽  
Construction Time ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Double Row ◽  
Supporting Structure ◽  
Steel Members ◽  
The Cost

According to the force characteristics of the double-row pile supporting structure, two new types of double-row piles are developed: the prestressed strong-constrained double-row piles and the recycling assembled double-row piles. A comparative field test was conducted on the support effects of the two new double-row piles and conventional double-row piles. The test site is located in a deep foundation pit of the Beijing Daxing International Airport Project. The feasibility and reliability of the two new support structures are verified. Field monitoring included section strain and bending moment of the pile body, horizontal displacement of the pile body, and vertical and horizontal displacement of the pile top. The research shows that because of the prestressed anchorage cables in the rear row piles, the prestressed strong-constrained support structure can provide better tensile performance from the rear piles, and the deformation and displacement are minimal. The recycling assembled double-row piles have similar deformation and displacement to the conventional piles. Through the connection of the steel members, the construction time can be effectively shortened. After the backfill of the foundation pit, the steel members can be recycled and the cost can be reduced.

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