Research on Construction Technology of Bulk Material and Concrete Upper-Lower Integrated Composite Pile for Thick Overburden and Deep-Buried Soft Soil Based on Experimental Analysis

2016 ◽  
Author(s):  
Xinquan Wang ◽  
Yongliang Cui ◽  
Shimin Zhang ◽  
Wenyin Yu ◽  
Fei Wang
Keyword(s):  
Experimental Analysis ◽  
Bulk Material ◽  
Soft Soil ◽  
Construction Technology ◽  
Composite Pile ◽  
Thick Overburden

Construction Technology of Rigid-Flexible Composite Piles for Reinforced Thick Overburden and Deep-Buried Soft Soil

2015 ◽  
Vol 744-746 ◽  
pp. 459-463
Author(s):  
Xin Quan Wang ◽  
Yun Liang Cui ◽  
Jian Feng Liang ◽  
Shi Min Zhang ◽  
Yi Qun Tan ◽  
...  
Keyword(s):  
Bulk Material ◽  
Soft Soil ◽  
Soil Layer ◽  
Construction Technology ◽  
Reinforcing Effect ◽  
Soil Mixing ◽  
Rigid Pile ◽  
Body Strength ◽  
Thick Overburden ◽  
Poor Soil

By adopting the conventional pile foundation to treat the area of thick overburden on soft soil, the reinforcing effect can’t meet the use requirement: by adopting the bulk material pile, the lower pile body strength can’t be ensured, and by adopting the cemented soil mixing pile for reinforcing, the pile is difficult to form and the reinforcing depth can’t meet the requirement. This paper aims to overcome the defects of the conventional construction method by adopting different materials to treat, namely, the concrete rigid pile is adopted for reinforcing the soft soil layer with poor soil body quality and the cement mortar flexible pile is adopted for reinforcing the overburden with excellent soil body quality, therefore not only the reinforcing effect is ensured, but also the construction cost is saved.

Research on Integrative Construction Technology of Pile Peripheral Cemented Soil Reinforced Cast In Situ Concrete Stiffness Core Pile

2015 ◽  
Vol 744-746 ◽  
pp. 565-569
Author(s):  
Xin Quan Wang ◽  
Yun Liang Cui ◽  
Jian Feng Liang ◽  
Shi Min Zhang ◽  
Hai Gen Wu ◽  
...  
Keyword(s):  
Soft Soil ◽  
Setting Time ◽  
Economic Benefits ◽  
Construction Method ◽  
Construction Technology ◽  
Initial Setting Time ◽  
The Core ◽  
Cemented Soil ◽  
Composite Pile ◽  
Initial Setting

the construction method of the ordinary cemented soil stiffness core composite pile is that the pile peripheral cemented soil and the core pile are constructed at different time, which might lead to the situations as the pile body is broken due to the forced inserting of the core pile into the cemented soil mixed pile after the initial setting time, the neighboring finished pile is damaged due to the compacting effect caused by the reaming construction of the core pile and the failure of effectively transferring the load due to the loose joining of stiffness core pile and the cemented soil whose construction is completed after the initial setting time. This paper aims to overcome the defects of the conventional construction method by introducing a new construction technology, and the construction technology is verified to be reliable through the application in the actual engineering projects and has the advantages that the peripheral soil body is significantly strengthened, the composite pile foundation can effectively overcome the harm as uneven settlement of buildings, so as to ensure the normal usage of the buildings, and the construction technology has excellent economic benefits and is significant for the later construction technology for treating the soft soil foundation.

Reinforcement Technology of Cement Agitation Pile in the Highway Soft Foundation Treatment

2013 ◽  
Vol 329 ◽  
pp. 205-209
Author(s):  
Kai Chen
Keyword(s):  
Soft Soil ◽  
Construction Technology ◽  
Pressing Method ◽  
Treatment Methods ◽  
Deep Mixing ◽  
Replacement Method ◽  
Foundation Treatment ◽  
Soft Foundation ◽  
Mixing Method ◽  
Soil Distribution

There is the soft soil distribution mostly in the regions along the river or the sea in our country, so the soft foundation treatment shold be well done in building highways. With respect to the soft foundation treatment methods, the scholars, engineers and technicians home and abroad have put forward a dozen or more methods, such as replacement method, reinforcement method, top pressing method, sandstone pile method and deep mixing method etc.. This article discusses the reinforcement mechanism, construction technology and some proceedings requiring attention in the construction and detection of the cement agitation pile.

On the Construction Technology and Quality Control of Vacuum Combined Surcharge to Foundation Reinforcement

2014 ◽  
Vol 1030-1032 ◽  
pp. 827-829 ◽  
Author(s):  
Ze Jun Liu ◽  
Ya Guo ◽  
Qi Wang Yuan ◽  
Bao Hai Chen ◽  
Xiang Yang Gu ◽  
...  
Keyword(s):  
Soft Soil ◽  
Soft Clay ◽  
Engineering Application ◽  
Economic Benefits ◽  
Engineering Practice ◽  
Strengthening Effect ◽  
Construction Technology ◽  
Soil Consolidation ◽  
Vacuum Preloading ◽  
Soft Clay Subgrade

The vast area of distribution of soft clay with poor engineering property of our country, on the soft clay subgrade treatment by drainage consolidation method. As a kind of drainage consolidation method, vacuum preloading consolidation of soft soil foundation in recent years have been widely used, and achieved very good engineering and economic benefits. The theory research about vacuum preloading behind the engineering practice, restricted the further development of the technology and engineering application, it is necessary to make a systematic study. Through the comparative analysis of the test results, the vacuum causes soil consolidation, on this basis, the surcharge preloading and vacuum preloading contrast of the vacuum preloading mechanism, analyzes various factors foundation reinforcement finally strengthening effect by vacuum preloading.

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.

Micro-Tremor Data Analysis for Site Response Studies of Srinagar, Garhwal (India)

2019 ◽  
Vol 10 (2) ◽  
pp. 69-83
Author(s):  
Pradeep Kumar Singh Chauhan ◽  
Abha Mittal ◽  
Gayatri Devi ◽  
Anirudh Singh
Keyword(s):  
Ground Motion ◽  
Site Response ◽  
Soft Soil ◽  
Seismic Hazard Assessment ◽  
Vulnerability Index ◽  
Earthquake Ground Motion ◽  
Seismic Zone ◽  
Noise Data ◽  
Thick Overburden ◽  
The City

Site response studies using micro-tremor or ambient noise data are one of the well-known tools of seismic hazard assessment and microzonation. Different soil types behave differently for the same ground motion - some amplify it and some do not. It is well-accepted that, besides the earthquake magnitude and epicenter distance, local geology exerts significant influence on earthquake ground motion at a given location. In general, soft soil and thick overburden amplify the ground motion. Micro-tremor data provides an important input in seismic microzonation studies. Srinagar (Garhwal Himalaya), the largest growing city of Uttarakhand, India, lies in seismic zone V and has long seismic history. The micro-tremor data using Altus K2SMA has been collected from 47 locations in different parts of the city. The city has been divided into three zones on the basis of natural frequency (Nf). The most part of the city lies in zone 1. The central part of the city has a share of rest zones i.e. II and III. Vulnerability index has been also computed and found in the range from 1–236.

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