Study on the Treatment of Soft Soil Foundation Based on the Technology of Dynamic Compaction Replacement

2014 ◽  
Vol 1065-1069 ◽  
pp. 308-311
Author(s):  
Yue Guo Shen
Keyword(s):  
Soft Soil ◽  
Dynamic Compaction ◽  
Construction Time ◽  
Scheme Design ◽  
Replacement Method ◽  
Foundation Treatment ◽  
Geological Conditions ◽  
Selection Test ◽  
Soil Foundation ◽  
Soft Soil Foundation

Foundation treated with dynamic compaction replacement method can not only improve the foundation strength but also improve the drainage condition, which is advantageous to the consolidation of soft soil. Compared with the widely used immersed tube piles, its construction time is shorter and the benefit is obvious. With a warehouse project as an example, this paper expounds the scheme design, parameter selection, test, inspection, etc. in soft soil foundation treatment in muddy geological conditions taking dynamic compaction replacement method.

scholarly journals The reinforcement effects of deep soft soil foundation with high degree of saturation under dynamic compaction

2018 ◽  
Vol 10 (6) ◽  
pp. 168781401878263 ◽  
Author(s):  
Jihong Wei ◽  
Yan Men ◽  
Feng Zhu ◽  
Huilin Le ◽  
Haotian Fan
Keyword(s):  
Soft Soil ◽  
Dynamic Compaction ◽  
Degree Of Saturation ◽  
Reinforcement Effect ◽  
Construction Time ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
High Degree ◽  
Deep Soft Soil ◽  
Compaction Method

The dynamic compaction method is effective to reinforce soft soil foundation with a low degree of saturation. However, deep soft soil foundation with high degree of saturation has some different characteristics. It has been widely considered that dynamic compaction method is unsuitable to improve the characters of deep soft soil foundation with high degree of saturation. In this article, we will show that the dynamic compaction method with vacuum well-point dewatering is effective to deep soft soil foundation with high degree of saturation reinforcement. In situ and laboratorial experiments are used to assess the reinforcement effect of the deep soft soil foundation with high degree of saturation. Our results show that the dynamic compaction method causes long dissipation time of pore water pressure, and the dynamic compaction method with vacuum well-point dewatering makes construction time of a project 25% shorter. The effective depth of deep soft soil foundation with high degree of saturation reinforcement using the two experimental methods can reach to 8.0 m. In comparison with the total settlement and layered settlement of the dynamic compaction method with vacuum well-point dewatering, the dynamic compaction method settlement is relatively smaller. For soils with depth of 4 m, the reinforcement effect of dynamic compaction method with vacuum well-point dewatering is obviously superior to dynamic compaction method. Based on these results, we suggest construction procedures for different reinforcement depth of soils and construction time.

Application and Research on New Technology of Foam Lightweight Soil in Treatment of Soft Soil Foundation of Railway Engineering

2012 ◽  
Vol 204-208 ◽  
pp. 1622-1625 ◽  
Author(s):  
Zi Lin Li ◽  
Kai Feng Zhang
Keyword(s):  
New Technology ◽  
Soft Soil ◽  
Actual Application ◽  
Foundation Treatment ◽  
Soft Foundation ◽  
Depth Analysis ◽  
Depth Study ◽  
New Ideas ◽  
Soil Foundation ◽  
Soft Soil Foundation

Foam lightweight soil is a new type of material appearing in recent years, whose advantages are paid more and more attention to by engineers and it will have broad application prospect in the engineering. An in-depth study application of foam lightweight soil in the complex of railway soft soil foundation treatment what based on a railway foundation project in Tianjin, this paper discusses the actual application state of foam lightweight soil in handling of special railway soft soil foundation. Through in-depth analysis of the advantages of a foam lightweight soil, optimization of construction replacement thickness and moisture density, discussion on construction of it, we can find large advantages of foam lightweight soil as replacement material in the complex railway soft soil foundation treatment, and provide new ideas about processing complex soft foundation.

scholarly journals Discussion on soft soil foundation treatment technology in municipal road and bridge engineering

2020 ◽  
Vol 165 ◽  
pp. 04002
Author(s):  
Xiuyong Ni
Keyword(s):  
Road Traffic ◽  
Soft Soil ◽  
Bridge Engineering ◽  
Foundation Engineering ◽  
Treatment Technology ◽  
Construction Quality ◽  
Foundation Treatment ◽  
Soil Foundation ◽  
Soft Soil Foundation

Municipal road and bridge engineering is an important part of the transportation road construction in the city. Its construction quality directly affects the transportation quality and driving safety of the whole municipal road traffic. Among them, the foundation engineering of municipal road and bridge engineering is the main construction link. In the current municipal road and bridge construction process, it is often affected by many factors, leading to the reduction of the construction quality of municipal road and bridge engineering, especially the construction treatment of soft soil foundation in the foundation engineering, which is the main factor directly affecting the construction quality of municipal road and bridge. This paper first introduces the definition and relevant characteristics of soft soil foundation in the construction of municipal road and bridge engineering, and expounds the influence of soft soil foundation on municipal road and bridge engineering, and then analyzes the application of soft soil foundation treatment technology combined with the basic treatment ideas of soft soil foundation in the construction of municipal road and bridge.

Analysis of Differential Settlement Influence on Internal Force of Box Culvert Structure

2013 ◽  
Vol 353-356 ◽  
pp. 225-228
Author(s):  
Fang Ding He ◽  
Jin Ping Cui ◽  
Jun Sui ◽  
Yi Fan Yu
Keyword(s):  
Traffic Safety ◽  
Soft Soil ◽  
Internal Force ◽  
Differential Settlement ◽  
Highway Engineering ◽  
Foundation Treatment ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Box Culvert ◽  
Powder Spraying

The foundation settlement of soft soil highway engineering is too large, resulting in pavement wave-like because of differential settlement between the structure and adjacent soft soil foundation, which seriously impacts on traffic safety. Considering the soft soil foundation in the foundation treatment methods of CFG pile, sand bag well, powder spraying pile, we analyze differential settlement on the degree of influence structure internal force distribution, then provide the reference for the design and calculation.

The Effect Analysis of the Thin-Walled Tubular Pile Technology Used in the Foundation Treatment of the High-Filling Railway Freight Yard

2014 ◽  
Vol 919-921 ◽  
pp. 1184-1190
Author(s):  
Jie Yu ◽  
Tian Yue Chu ◽  
Quan Mei Gong
Keyword(s):  
Soft Soil ◽  
Measured Data ◽  
Effect Analysis ◽  
Railway Freight ◽  
Foundation Treatment ◽  
Soft Foundation ◽  
Thin Walled ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Soft Subgrade

On the background of one railway freight yard in Xiao Yong railway , and firstly the use of thin-walled tubular pile is determined in railroad yard through the comparison with other methods in the soft foundation reinforcement. Secondly, the effect of the soft-soil foundation reinforcement combined with the numerical simulation and the measured data is analyzed. Finally, it is defined that the thin-walled tubular piles has good value in the treatment of the high-filling railway yard, and it also can provide a new method for the improvement of the soft subgrade in railway freight yard.

Application of Vacuum Preloading for Soft Foundation Treatment in Grain Storage

2012 ◽  
Vol 190-191 ◽  
pp. 1207-1213
Author(s):  
Qi Xia Liu ◽  
Yang Zhao
Keyword(s):  
Soft Soil ◽  
Construction Method ◽  
Grain Storage ◽  
Vacuum Preloading ◽  
Obvious Effect ◽  
Foundation Construction ◽  
Foundation Treatment ◽  
Soft Foundation ◽  
Soil Foundation ◽  
Soft Soil Foundation

The application of vacuum preloading for soft foundation treatment in grain storage is introduced from its principle，design，construction and the inspections. Its obvious effect is proved by example. The east coast of China is the most developed economical area and major grain and oil manufacturers. Many grain and oil depots have been established. However, in the places where the depots located, soil is soft dirt with low strength grade, high compressibility, small permeability and high possibility of plastic flow, has increased difficulties of grain and oil depots foundation construction. Without enough knowledge of soft soil and lacking of proper foundation construction method and good technology, depots may slip due to foundation’s erosion, and big settlement. If the structure slips, equipments for aeration, dehumidifier, antivirus equipment cannot work well. Based on the statement above, reasonable and effective methods for soft soil foundation work is the key point for construction of high quality and high standard grain and oil depots. This paper mainly discussed when we do depots construction work on the soft soil foundation, exact calculation, construction method and result test of fasten method for the soft foundation under the vacuum circumstance of preloading.

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