scholarly journals Highway Construction of Soft Soil Foundation Processing Analysis

2018 ◽  
Vol 1 (1) ◽  
pp. 31
Author(s):  
Zhao Zhao
Keyword(s):  
Economic Development ◽  
Soft Soil ◽  
Highway Construction ◽  
Construction Cost ◽  
Wide Distribution ◽  
Construction Technology ◽  
Highway Engineering ◽  
Soil Foundation ◽  
Soft Soil Foundation

Highway is an important channel to connect regional economic development, and is an indispensable part of modern transportation system. In view of the extensive nature of highway cover space and the existence of diversified construction environment, climate and geological influence in highway construction, soft soil foundation is one of the more typical geological forms. With wide distribution in our country, seen as a big difficulty, highway construction technology and directly affect the quality of highway construction, cost, if not properly handled, will cause the soft soil foundation highway engineering structure is not stable, prone to accidents in use. In this paper, we study the treatment of soft soil foundation in highway construction, and put forward some reasonable Suggestions.

scholarly journals Influences of Urban Viaduct Pier Caps on Uneven Settlement of Roadbed

2019 ◽  
Vol 2019 ◽  
pp. 1-20
Author(s):  
Bin Hu ◽  
Xiaoqing Li ◽  
Lifei Zheng
Keyword(s):  
Numerical Analysis ◽  
Soft Soil ◽  
Construction Cost ◽  
Construction Technology ◽  
Analysis Model ◽  
Relative Stiffness ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Pier Caps

Uneven settlement widely occurs on the roadbed under urban viaducts in operation. Previous studies focused on the effect of soft soil foundation on the uneven settlement of roadbed, without considering the phenomenon and mechanism of uneven settlement at the junction of pier cap and the roadbed under viaduct. The interaction is now considered between the buried depth of cap, the relative stiffness between cap and road subgrade, and the uneven settlement of roadbed. Using the Midas GTS NX software, a numerical analysis model of the deformation of roadbed under viaduct is constructed to study the influence of viaduct cap foundation on the uneven settlement of roadbed under viaduct. The simulated results of uneven settlement of roadbed caused by urban viaduct pier cap show that (1) when the buried depth of cap exceeds 2.35 m, with the increase of buried depth, the fall of roadbed settlement tends to decrease, but the decreased amount is not significant. Considering the factors such as construction cost and complications of construction technology, it is suggested that the best buried depth of cap is about 2.5 m. (2) The fall of roadbed settlement decreases with the decrease of relative stiffness between cap and roadbed. When the relative stiffness exceeds 6.3, the decreasing trend of settlement fall is not significant. The concrete roadbed should have more stiffness in order to reduce the settlement.

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.

Study of “Wave Type” Uneven Settlement and Reinforcing Method of Soft Clay Foundation

2011 ◽  
Vol 243-249 ◽  
pp. 2990-2996
Author(s):  
Li Qiang Sun ◽  
Shu Wang Yan ◽  
Hong Juan He ◽  
Yu Xu
Keyword(s):  
Soft Soil ◽  
Soft Clay ◽  
Traffic Load ◽  
Dominant Factor ◽  
Wave Type ◽  
The Road ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Preloading Method

The deformation is the dominant factor of the quality of the road constructed on the soft soil foundation. Tianjin DongJiang port is located on the hydraulic filled soil foundation which is improved by using vacuum preloading method. Roads in this area often suffer wave type asymmetry settlement, which serious affects the usage of the road and causes damage to both vehicles and human being. It is found that the initial wave asymmetry deformation of the road on very soft soil foundation usually exists and will be developing continuously under the traffic load. The mechanism of the wavy failure of the road is discussed by establishing a mechanical model. The method of using geogrids to reduce the asymmetry deformation is proposed, the reinforce effect is analyzed using finite element method.

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 Application of Vacuum Preloading Method in Soft Soil Foundation Underwater

2014 ◽  
Vol 580-583 ◽  
pp. 209-212 ◽  
Author(s):  
Yu Qin Feng ◽  
Lu Zhang
Keyword(s):  
Soft Soil ◽  
Effective Means ◽  
Construction Technology ◽  
Strength Index ◽  
Engineering Project ◽  
Vacuum Preloading ◽  
Before And After ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Preloading Method

On the basis of engineering project in coastland, this article analyzes the construction technology and reinforcement mechanism of vacuum preloading reinforces soft soil foundation. By indoor soil test of Reinforcement of soil before and after processing, comparing the change of the physical and shear strength index, verify vacuum preloading method underwater is effective means in handing soft ground and provide some experience for regional development and promotion of underwater application of vacuum preloading technology.

The Applied Research of Underwater Vacuum Preloading Method in Soft Soil Foundation

2014 ◽  
Vol 580-583 ◽  
pp. 742-745
Author(s):  
Yu Qin Feng ◽  
Lu Zhang
Keyword(s):  
Soft Soil ◽  
Soft Ground ◽  
Construction Technology ◽  
Engineering Project ◽  
Vacuum Preloading ◽  
Soft Foundation ◽  
Before And After ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Preloading Method

On the basis of engineering project using underwater vacuum preloading method to strengthening the soft foundation, under the specific geological conditionsthis article analyzes the construction technology and reinforcement mechanism of underwater vacuum preloading of the soft soil foundation. By indoor soil test of Reinforcement of soil before and after processing, compared the change and improve of soil shear strength indexes before and after the reinforcement, it is verified that the underwater vacuum preloading method is a effective mean in handing soft ground, and can be further promoted as a means of handling soft ground along the coastal area of China.

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