Time filter

Source Type

Guangzhou, China

Su J.-F.,Guangzhou Metro co | Xu Y.-F.,South China University of Technology
Advanced Materials Research

Floor slab static load test is a important method to judge the performance and carrying capacity of the slab. This paper, with the background of a factory frame-structure slab, introduced the testing scheme, the details of the testing process as well as the test results. The testing cases provide a useful reference for the same type of project. © (2013) Trans Tech Publications, Switzerland. Source

Zhong C.,Sun Yat Sen University | Zhong C.,Guangzhou Rail Transit Supervising Co. | Zhu W.,Guangzhou Metro co | Zhou C.,Sun Yat Sen University
Modern Tunnelling Technology

The characteristics of weathered granite stratum are described, and the tunnel sections are classified based on the stratum types. The construction risks of the shield machine operated in the following five typical strata are analyzed, i.e. stratum inclining to mud cake, stratum with boulders, stratum with soft upper part and hard lower part, hard rock, and stratum with rich water. Based on the construction practice of the Guangzhou Metro line 3, the countermeasures against these risks and effects are studied, which can be taken as a reference for the similar project. Source

Cai G.-Q.,Beijing Jiaotong University | Xing Z.-Y.,Nanjing University of Science and Technology | Pan L.-S.,Guangzhou Metro co | Cheng X.-Q.,Beijing Jiaotong University | Qin Y.,Beijing Jiaotong University
Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

To solve the modelling problem of wheel-rail force, a modelling approach based on the genetic algorithm and radial basis function neural network method is proposed, which can predict the output of wheel-rail force using the input of track irregularities. In order to improve the accuracy of the designed neural network and relieve the computational burden, the centers, widths and weights of the neural network are determined using the maximum distance measure, the least square method and genetic algorithm, respectively. The simulation results indicate that the proposed method can predict wheel-rail force with high precision. Source

Huang W.,Jinan University | Zhu W.,Guangzhou Metro co | Liu R.,Jinan University
Modern Tunnelling Technology

Regarding the risks involved in the construction of a long and deep submarine tunnel, such as complex geology, environmental protection, port industry, waterway transportation, air transportation, and abnormal meteorology, the environmentally friendly shield-driven tunnel construction method option has unique advantages. Based on the construction characteristics of the Shenzhen-Guangzhou-Zhongshan (SGZ) fixed link that crosses the Pearl River estuary, the achievements of the Guangzhou Metro in similar mixed ground, as well as the construction experience gained from international large-diameter, high-hydraulic-pressure and long-distance shield tunnel projects, the following conclusion is derived in this paper: the three-tube tunnel system is the optimal construction scheme because of its suitable functions, guaranteed quality, reasonable costs, and controllable risks. Additionally, a further analysis of the risks and countermeasures is described as a reference for similar projects. Source

Zhu W.,Guangzhou Metro co | Zhong C.,Guangzhou Mass Transit Engineering Consultant Co. | Zhong C.,Sun Yat Sen University | Huang W.,Guangzhou Mass Transit Engineering Consultant Co. | And 2 more authors.
Modern Tunnelling Technology

Based on the shield construction practices in mixed ground at home and abroad, this paper determines the definition of "hindered mucking" for the first time. In addition to the classification, causes, and risks, it proposes systematic solutions, including reducing large -particle mucks, improving muck workability, and adjusting construction parameters, and presents countermeasures in terms of design, manufacture, and construction of the shield. This paper also provides a reference for countermeasures against hindered mucking regarding new theory, equipment, approach, material, etc. ©, 2014, Editorial Office of "Modern Tunnelling Technology". All right reserved. Source

Discover hidden collaborations