Construction Technology and Quality Control Measures of Bored Pile

2011 ◽  
Vol 94-96 ◽  
pp. 1946-1950
Author(s):  
Ming Hua Hu ◽  
Lian Sheng Gu ◽  
Di Lian Tang
Keyword(s):  
Quality Control ◽  
Pile Foundation ◽  
Control Measures ◽  
Construction Technology ◽  
Bored Pile ◽  
Bored Piles

Filling pile is a common form of pile foundation work, it passes the superstructure loads to the deep stabilitily soil or rock , reducing the non-uniform settlement of ground and foundation. Because of bored piles is done underground, underwater, quality control is difficult. The construction technology and quality control measures of bored pile is been introduced.

scholarly journals Determining the quantity of access tubes for quality control of bored pile concrete based on probability approach

2020 ◽  
Vol 14 (2) ◽  
pp. 76-86
Author(s):  
Bach Duong
Keyword(s):  
Quality Control ◽  
National Standard ◽  
Construction Process ◽  
Construction Stage ◽  
Probability Approach ◽  
Bored Pile ◽  
Defects Inspection ◽  
Concrete Quality ◽  
Bored Piles ◽  
Sonic Logging

Unexpected defects of concrete in a completed bored pile can arise during the construction stage. Therefore, post-construction testing of bored pile concrete is an important part of the design and construction process. The Cross-hole Sonic Logging (CSL) method has been the most widely used to examine the concrete quality. This method requires some access tubes pre-installed inside bored piles prior to concreting; the required quantity of access tubes has been pointed out in few literatures and also ruled in the national standard of Vietnam (TCVN 9395:2012). However, theoretical bases aiming to decide the required quantity of access tubes have not been given yet. A probability approach is proposed in this paper aiming to determine the essential quantity of access tubes, which depend not only on pile diameters, magnitude of defects, but also on the technical characteristics of CSL equipment. Keywords: access tubes; bored piles; CSL method; defects; inspection probability.

The Application Research and Discussion on a Viaduct Artificial Excavated Pile Technology

2012 ◽  
Vol 446-449 ◽  
pp. 2449-2452
Author(s):  
Dong Guo Li ◽  
Gui Mei Shi
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Retaining Wall ◽  
Wall Effect ◽  
Construction Technology ◽  
Application Research ◽  
Technical Work ◽  
Bored Pile

A viaduct of the Qinglai expressway fourth contract was artificial excavated piles. The construction technical work was regarded as an example. The technical comparison were done between the artificial excavated pile and the bored pile on the pile foundation bearing capacity and the retaining wall effect . The artificial excavated pile replacing the bored pile was feasible, and the construction technology and the key problems of the artificial excavated piles were confirmed. The references were provided to the similar projects.

Construction Technology Research Expressway Soft Long Pile Lakes

2014 ◽  
Vol 1065-1069 ◽  
pp. 687-690
Author(s):  
Mei Yan He
Keyword(s):  
Pile Foundation ◽  
High Speed ◽  
Soft Clay ◽  
Construction Technology ◽  
Construction Process ◽  
Technology Research ◽  
Technical Problems ◽  
Foundation Construction ◽  
Bored Pile ◽  
Geological Conditions

Currently, bored pile been widely applied in the current road and bridge construction, But its construction technology in complex geological case is still not perfect. In view of this, this paper carried out a high-speed Lakes viaduct extraordinary pile foundation construction project. For the analysis of the technical difficulties in the construction process, explore get the corresponding key construction technology, and it relates to the accident and its approach are summarized, study drew long pile construction technology Lakes geological conditions under soft silt and clay, solve the long holes bored pile into the lake silt soft clay under geological conditions, verticality control and other technical problems, can provide reference for similar projects.

scholarly journals Improving pre-drilling efficiency by analysing geological prospecting data: a case study of a project in Nanshan, Shenzhen

2020 ◽  
Vol 165 ◽  
pp. 03047
Author(s):  
Da Liu ◽  
Zheng Liu ◽  
Tianyu Chen
Keyword(s):  
Pile Foundation ◽  
Design Stage ◽  
Geological Condition ◽  
Optimal Length ◽  
Bored Pile ◽  
Bored Piles ◽  
The Cost ◽  
Rock Strata ◽  
Pile Length

Pre-drilling is a widely used technique to get the detailed geological condition at the location of the bored pile foundation prior to its construction. It is often a necessary step for bored piles supported by strata, as its results are helpful for finalizing the pile length in design stage, which often requires the pile to be embedded into the rock strata at certain depth. The aim of the paper is to find the optimal (normally the lowest) point of rock strata at the purposed pile location, so that the optimal length required for the pile can be determined. To achieve this, geological prospecting data of the site needs to be analysed and the optimal pre-drilling point needs to be determined. The model developed by this study is based on the geological prospecting data and the pre-drilling results of a real project with a sharp slope of strata. It is found that by using the method introduced in this study, higher accuracy results could be obtained with less pre-drilling works required, hence the time and the cost of pre-drilling can be greatly reduced.

scholarly journals Quality Control Measures in Highway Bridge Construction

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Bing Fu
Keyword(s):  
Quality Control ◽  
Control Strategies ◽  
Modern Society ◽  
Control Measures ◽  
Bridge Engineering ◽  
Highway Bridge ◽  
Construction Technology ◽  
Bridge Construction ◽  
China Development

Highway bridge engineering is an important part of modern transportation system. It has a great effect on the devel-opment of modern society. Therefore, it is very important to ensure the construction quality of highway bridge engi-neering. At present, there are more and more construction technology quality control issues in the construction of high-way bridges should be given enough attention. The problems should be actively found out and effectively solved to improve the quality of life, while promoting China development of infrastructure construction. This paper analyzes the quality control strategies in the highway bridge construction.

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