The Risk Management Practice of a Deep Foundation Pit Project

2014 ◽  
Vol 638-640 ◽  
pp. 703-709
Author(s):  
Shu Min Nie ◽  
Jun Yan Liu
Keyword(s):  
Risk Management ◽  
Management Practice ◽  
Risk Identification ◽  
Monitoring And Control ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Risk Monitoring ◽  
And Control ◽  
The Empirical Analysis

Risk management consists of Risk Identification, Risk Measurement, Risk Assessment, and Risk Monitoring and Control. This paper based on An office building in Dongying, uses Monitoring data to analyze, in order to gain an applicable Risk Management Practice. This article suggest we have to do the survey work well and also should pay attention to the empirical analysis of experts and field technicians at the same time to analyze risk to deep foundation pit engineering.

Research on auto monitoring and control instrument of deep foundation pit engineering

2011 ◽  
Author(s):  
Qian Feng ◽  
Heng Li ◽  
Yi Zhang ◽  
Xutao Wang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Monitoring And Control ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Control Instrument ◽  
And Control

scholarly journals The utilization of project risk monitoring and control practices and their relationship with project success in construction projects

2022 ◽  
Vol 7 (1) ◽  
pp. 35-52 ◽  
Author(s):  
Kennedy Christopher Obondi
Keyword(s):  
United States ◽  
Construction Projects ◽  
Project Success ◽  
The United States ◽  
Risk Identification ◽  
Project Managers ◽  
Monitoring And Control ◽  
Project Risk ◽  
Risk Monitoring ◽  
And Control

Risk monitoring and control is often poorly implemented in construction projects because of a failure to monitor and manage identified risks. Construction companies experience significant losses due to project managers' lack of project risk monitoring and control in construction projects. Most studies have concentrated on risk identification, risk assessment, and risk analysis processes while neglecting crucial risk management processes of risk control, risk monitoring, and risk response. The lack of research on these three crucial processes highlights a gap in the literature concerning how these processes can increase the delivery of successful projects. The purpose of this study was to examine whether the utilization of project risk monitoring and control practices was related to project success in construction projects in the United States. An electronic survey instrument was used to collect data from a sample of 50 construction project managers in the Dallas-Fort Worth area in the state of Texas, in the United States. Spearman rho correlation analysis was used to examine the relationship between project risk monitoring and control practices and project success. The results of this study indicated that all project risk monitoring and control practices, including risk reassessment, risk audits, contingency reserves analysis, and risk status meetings, were significantly and positively related to project success in construction projects. One of the recommendations presented in this study was that future research should conduct the same study in developing countries to see if the study’s findings remain the same and generalizable. The study concluded that construction organizations should regularly consider the importance and usage of project risk monitoring and control practices and apply them to improve the success rate of a project.

scholarly journals Deformation Detection Model of High-Rise Building Foundation Pit Support Structure Based on Neural Network and Wireless Communication

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Diandian Ding
Keyword(s):  
Neural Network ◽  
Wireless Communication ◽  
Construction Safety ◽  
Risk Identification ◽  
Identification System ◽  
Optimized Design ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Safety Risk ◽  
Deep Foundation Pit

The reasonable selection and optimized design of the deep foundation pit support scheme is directly related to the safety, construction period, and cost of the entire project. Here, based on a large number of theoretical results in many related fields, relevant influencing factors are systematically analyzed, and advanced mathematical algorithms such as neural networks are introduced according to the relevant characteristics of building deep foundation pit support construction. First of all, this paper designs and implements deep foundation pit construction safety risk technology based on wireless communication and BIM technology and analyzes and describes the framework and function of the foundation pit construction safety risk identification system. Secondly, we use neural network algorithms to study the deformation prediction of the foundation pit supporting structure, which can describe the expression method of the above safety knowledge. Finally, the differences and benefits of this method and traditional methods are compared through experiments, which show that this technology can pave the way for the construction of deep foundation pit construction safety risk knowledge.

Research on Analysis and Control of Seepage Failure in Foundation Pit

2011 ◽  
Vol 368-373 ◽  
pp. 3171-3174
Author(s):  
Yue Guo Shen ◽  
Xiao Qi Li ◽  
Nei Juan Du ◽  
Zhong Feng Shi
Keyword(s):  
Deep Foundation ◽  
Foundation Pit ◽  
Seepage Failure ◽  
Deep Foundation Pit ◽  
And Control ◽  
Design And Construction

Analyzing mechanism and conditions that cause seepage failure during deep foundation pit dewatering, some measures of controlling seepage failure are put forward in design and construction of foundation pit. Good results have gotten with these measures in a foundation pit. This paper provides references for foundation pit dewatering and relative study.

Study on Risk Management of Deep Foundation Pit Engineering

2014 ◽  
Vol 638-640 ◽  
pp. 574-579 ◽  
Author(s):  
Shu Min Nie ◽  
Feng Ren
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
High Risk ◽  
Risk Control ◽  
Risk Measurement ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Risk Management System ◽  
Testing Technology

Deep foundation pit engineer is characterized with high risk, and it is important to have a study on the risk management of deep foundation pit engineering. Risk Measurement, Risk Assessment and Risk Control of Deep Foundation Pit Engineering is very necessary. There is a need to establish a set of operational foundation pit engineering risk management system to comprehensively and accurately identify and measure the risks of deep foundation pit engineering; and conduct risk control on the basis of risk analysis. Using engineering testing technology, establishes a monitoring based deep foundation pit engineering risk management mode.

scholarly journals Establishment and practice of land subsidence control and management system for deep foundation pit dewatering in Shanghai

2020 ◽  
Vol 382 ◽  
pp. 755-759
Author(s):  
Xinlei Huang ◽  
Tianliang Yang ◽  
Jianzhong Wu ◽  
Jinxin Lin ◽  
Ye He
Keyword(s):  
Land Subsidence ◽  
Management System ◽  
Prevention And Control ◽  
Large Scale ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Whole Process ◽  
Control And Management ◽  
And Control

Abstract. At present, large-scale engineering construction activities, especially deep foundation pit dewatering, are important factors of land subsidence in Shanghai, which induces uneven land subsidence. To solve this problem, this paper puts forward a technical approach to prevention and control the land subsidence. Based on the practice of joint work by multiple administrative departments in Shanghai, this paper further combines the technology and management measures effectively, and summarizes the management system of land subsidence control for deep foundation pit dewatering. Meanwhile, this paper provides the key workflow, starting from the whole process control of construction project for feasibility demonstration, design, construction and completion. The practice shows that the whole process of deep foundation pit dewatering control and management provides a powerful guarantee for land subsidence prevention and control.

scholarly journals Comprehensive experimental study on prevention of land subsidence caused by dewatering in deep foundation pit with hanging waterproof curtain

2015 ◽  
Vol 372 ◽  
pp. 1-5
Author(s):  
T. L. Yang ◽  
X. X. Yan ◽  
H. M. Wang ◽  
X. L. Huang ◽  
G. H. Zhan
Keyword(s):  
Land Subsidence ◽  
Prevention And Control ◽  
Scientific Basis ◽  
Deep Foundations ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Soil Subsidence ◽  
Basic Features ◽  
And Control

Abstract. Land subsidence caused by dewatering of deep foundations pit has currently become the focus of prevention and control of land subsidence in Shanghai. Because of the reliance on deep foundation dewatering pit projects, two comprehensive test sites were established to help prevent land subsidence. Through geological environmental monitoring during dewatering of a deep foundation pit, the analysis of the relation between artesian water level and soil subsidence, some basic features of land subsidence caused by dewatering of deep foundation pits are elucidated. The results provide a scientific basis for prevention and control of land subsidence caused by dewatering in deep foundation pits.

scholarly journals Analysis of Seepage Characteristics of a Foundation Pit with Horizontal Waterproof Curtain in Highly Permeable Strata

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1303
Author(s):  
Chenghua Shi ◽  
Xiaohe Sun ◽  
Shengli Liu ◽  
Chengyong Cao ◽  
Linghui Liu ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Theoretical Calculation ◽  
Calculation Method ◽  
Design Method ◽  
Water Pressure ◽  
Water Inflow ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Seepage Characteristics

At present, jet-grouted horizontal waterproof curtain reinforcement has become an essential method for deep foundation pit groundwater control. However, there is still a lack of an effective theoretical calculation method for horizontal waterproof curtain reinforcement, and there is little research on the seepage laws of foundation pits under different horizontal waterproof curtain conditions. Based on Darcy’s seepage theory, theoretical analysis models of deep foundation pit seepage were established considering the effect of a horizontal curtain in a highly permeable formation. Through the established models, the calculation method of the water inflow and the water pressure under the condition of a horizontal curtain was derived. Then through indoor tests, the reliability of the theoretical calculation method was verified. Furthermore, the established theoretical calculation method is used to analyze the influence of various factors on the water inflow and the water pressure, such as the ratio of hydraulic conductivity of the horizontal curtain to surrounding soil, thickness, and reinforcement position of the horizontal curtain. It is found that the hydraulic conductivity ratio has the most significant influence on the seepage characteristics of the foundation pit. Finally, the design method was applied to an example of the horizontal waterproof curtain of the foundation pit, which is located at Juyuanzhou Station in Fuzhou (China). The water inflow per unit area is 0.36 m3/d in the foundation pit, and this implies that the design method of the horizontal waterproof curtain applied for the excavation case is good and meets the requirements of design and safety.

Mechanical Analysis of Enclosure Pile under Different Constraints

2011 ◽  
Vol 90-93 ◽  
pp. 485-489
Author(s):  
Li Guo ◽  
Peng Li He ◽  
Guang Jun Zhang
Keyword(s):  
Mechanical Analysis ◽  
Subway Station ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Retaining Structure ◽  
Cantilever Structure ◽  
Reinforcement Measures

The enclosure pile is extensively used as retaining structure in the foundation pit excavation. And it is always combined with other reinforcement measures. So it is unreasonable to a certain degree that the enclosure pile is analyzed as cantilever structure. Taken the deep foundation pit of a subway station in Hefei for instance, the effect of other reinforcement measures on restrained conditions of enclosure piles in the paper was taken into account. And the behavior of enclosure pile under various restrained conditions was analyzed. Based on that, some helpful suggestions for practical retaining structure of foundation pit were put forward.

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