作者机构：
[王宏伟; 刘霁; 何美丽] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[刘浪; 刘霁] School of Resources and Safety Engineering, Central South University, Changsha 410083, China;[刘浪] School of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China
通讯机构：
College of Civil Engineering, Hunan City University, China
作者机构：
[王永和; 陈湘亮] School of Civil Engineering, Central South University, Changsha 410075, China;[周天应] School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha 410004, China;[陈湘亮; 王灿辉] College of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Civil Engineering, Central South University, China
作者机构：
[喻杰; 龙琼; 张蕾] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[胡列格; 龙琼] School of Traffic and Transportation, Changsha University of Science and Technology, Changsha 410004, China
通讯机构：
School of Civil Engineering, Hunan City University, China
作者机构：
[杨慧; 江学良] School of Civil Engineering and Mechanics, Central South University of Forest and Technology, Changsha 410004, China;[曹平] School of Resources and Safety Engineering, Central South University, Changsha 410083, China;[江学良] School of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Civil Engineering and Mechanics, Central South University of Forest and Technology, China
作者机构：
[黎永索] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[黄常波] China Construction Municipal Construction Co. Ltd., Beijing 100163, China;[张可能; 黎永索] School of Geoscience and Info-Physics, Central South University, Changsha 410083, China
通讯机构：
School of Civil Engineering, Hunan City University, China
摘要：
The response surface method (RSM) is one of the main approaches for analyzing reliability problems with implicit performance functions. An improved adaptive RSM based on uniform design (UD) and double weighted regression (DWR) was presented. In the proposed method, the basic principle of the iteratively adaptive response surface method is applied. Uniform design is used to sample the fitting points. And a double weighted regression system considering the distances from the fitting points to the limit state surface and to the estimated design points is set to determine the coefficients of the response surface model. Compared with the conventional approaches, the fitting points selected by UD are more representative, and a better approximation in the key region is also observed with DWR. Numerical examples show that the proposed method has good convergent capability and computational accuracy.
摘要：
Intelligent transportation integrated access system can significantly improve the security of computer network systems, while trusted computing technology can effectively enhance the credibility and safety of the terminal, and then construct a trusted network connection. Based on computing technology, this thesis proposes to establish a credible integrated access network, and implement network access control on the remote access equipment, thereby enhancing the safety of the integrated access system. The results show that, through the transmission technology of credible chain proposed in this paper, and remote proof technology basing on device identity and security policies can establish a credible integrated access system, thus effectively improving the security of Beijing intelligent transportation systems.
摘要：
Shield tunneling is often adopted in underground engineering such as civil tunnel construction and mine excavation. The program FLAC3D is used to simulate the process of the tunnel excavation through underground structure in Shenyang in this paper. The analysis results show that, (1) the soil below the end wall suffers great displacement, when the shield approaches the end wall of underground framework from different directions, so the soil under the end wall needs to be reinforced. (2) Increasing pressure and volume of grouting can't significantly reduce the amount of surface subsidence when the drilling of the shield acrosses through the independent foundation. (3) The influences of shielding to the construction are limited because of the constraint function to the surrounding rock above the tunnel by the great entire rigidity of under-ground framework. The results of numerical simulation exactly matches the monitoring data when the stiffness of under-ground frame structure is considered, and it can provide guidance for engineering practice.
作者机构：
[方志] College of Civil Engineering, Hunan University, Changsha 410082, China;[曹国辉] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[伍琼芳] School of Urban Construction Nanhua University, Hengyang 421001, China
通讯机构：
College of Civil Engineering, Hunan University, China
通讯机构：
[Kong, Gangqiang] H;Hunan City Univ, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China.
会议名称：
Global Conference on Civil, Structural and Environmental Engineering / 3rd International Symp on Multi-field Coupling Theory of Rock and Soil Media and its Applications
会议时间：
OCT 20-21, 2012
会议地点：
China Three Gorges Univ, Yichang, PEOPLES R CHINA
摘要：
A new belled wedge pile, which can improves the friction of pile shaft, tip resistance and reduce the influence of negative skin friction, was developed. The analysis model of single belled wedge pile embedded on soft soils was built by p-y curves method via LPILE software, models of conventional belled pile, tapered pile, and uniform section pile with the same volumes were also built for comparative analyze. The performances on load deflection curves, and bending moment distributions for these four pile types were comparative analyzed and discussed. Then the parameter studies of single belled wedge pile are carried out. The results show that belled wedge pile is one of cost-effective piles, which can improve lateral bearing capacities effectively.
摘要：
As a result of plain concrete pavement cracking phenomenon is more serious, leading to the late maintenance and repair costs are higher, resulting in the national great economic losses, it has taken many measures to alleviate the damage of pavement, of which the most widely used reinforced concrete. The use of reinforced concrete materials can effectively delay the pavement cracking phenomenon, but its cost is high. In this paper we consider the use of bamboo reinforcement in concrete pavement instead of steel, and compare the bending test of the two kids of board, the bamboo reinforced concrete board and a concrete board. The experiment indicated that, compared with ordinary concrete board, the ultimate strength of bamboo reinforced concrete plate has been grew 87.5%, and reinforced concrete plate has certain signs before failure, so the concrete reinforced with bamboo ribs can prolong the concrete crack time, but also greatly improve the concrete pavement flexural strength and crack resistance. Bamboo reinforcement applied in concrete pavement is entirely feasible, and it is good of the application development prospect about bamboo reinforcement.
期刊：
Applied Mechanics and Materials,2012年117-119:721-725 ISSN：1660-9336
通讯作者：
Zhang Chengping
作者机构：
[Zhang Chengping; Wang Jianchen; Li He] Beijing Jiaotong Univ, Minist Educ, Tunnel & Underground Engn Res Ctr, Beijing 100044, Peoples R China.;[Li Limin] Hunan City Univ, Sch Civil Engn, Changsha 413000, Hunan, Peoples R China.
通讯机构：
[Zhang Chengping] B;Beijing Jiaotong Univ, Minist Educ, Tunnel & Underground Engn Res Ctr, Beijing 100044, Peoples R China.
会议名称：
International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2011)
会议时间：
NOV 18-20, 2011
会议地点：
Shenzhen, PEOPLES R CHINA
会议主办单位：
[Zhang Chengping;Li He;Wang Jianchen] Beijing Jiaotong Univ, Minist Educ, Tunnel & Underground Engn Res Ctr, Beijing 100044, Peoples R China.^[Li Limin] Hunan City Univ, Sch Civil Engn, Changsha 413000, Hunan, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Control standard;Ground surface settlement;Numerical simulation;Statistical analysis;Subway running tunnel construction
摘要：
Ground settlement, especially the ground surface settlement induced by subway tunneling is an important issue. However, there is no an agreed standard for controlling ground surface settlement during the subway construction at present. The control standard of ground surface settlement was studied using the methods of statistical analysis and numerical simulation based on the running tunnel in Beijing subway. According to the research results, a conclusion could be obtained that the ground surface settlement can be controlled within 40 mm using the general construction measures in Beijing subway running tunnel construction, and furthermore, the settlement of 40mm will not damage the existing nearby structures and utilities including neighboring buildings, bridges and pipelines, etc. So the control valve of 40 mm is rational, which can be adopted as the control standard of ground surface settlement induced by running tunnel construction in Beijing subway.
作者机构：
[郭朝阳] School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150006, Heilongjiang, China;[李丽民] School of Civil Engineering, Hunan City University, Yiyang 413000, Hunan, China;[王喜燕] Beijing Road Engineering Quality Supervision Station, Beijing 100076, China;[沈国辉; 郭朝阳] Research Institute of Highway, Ministry of Transportation, Beijing 100088, China
通讯机构：
School of Transportation Science and Engineering, Harbin Institute of Technology, China
作者机构：
[刘霁; 何美丽] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[周健; 刘浪; 刘霁] School of Resources and Safety Engineering, Central South University, Changsha 410083, China
通讯机构：
College of Civil Engineering, Hunan City University, China
作者机构：
[Fu, Guihai; Wei, Limin] Cent S Univ, Coll Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China.;[Fu, Guihai] Hu Nan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.;[Zhou, Hui] Hu Nan City Univ, Coll City Manage Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Fu, Guihai] C;Cent S Univ, Coll Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China.
会议名称：
International Conference on Structures and Building Materials
会议时间：
JAN 07-09, 2011
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Fu, Guihai;Wei, Limin] Cent S Univ, Coll Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China.^[Fu, Guihai] Hu Nan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.^[Zhou, Hui] Hu Nan City Univ, Coll City Manage Engn, Yiyang 413000, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Excess pore water pressure;Piles-driving;Single pile;Soft clay
摘要：
Prestressed concrete pipes construction by hammer cause high excess pore water pressure in deep soft soils because Soil disturbance by violent and poor permeability of soft soil. Taking the typical soft ground in passenger special line from Hang Zhou to Ning Bo as the engineering example, the in-situ measuring of the excess pore water pressure in saturated clay ground during the construction of the piles was carried out, and the comparison analysis with the solutions from Vesic theory was also done. The changing rules of excess pore water pressure and its influence range during the sinking of the piles were studied, which would provide an important basis for the design and construction of the similar projects.
作者机构：
[刘浪; 孟茁超; 周科平] School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, China;[孟茁超] College of Civil Engineering, Hunan City University, Yiyang, Hunan 413000, China
通讯机构：
School of Resources and Safety Engineering, Central South University, China
