Time filter

Source Type

Wang X.-L.,Lanzhou University of Technology | Wang X.-L.,Gansu Construction Vocational Technical College | Zhu Y.-P.,Lanzhou University of Technology | Huang X.-F.,Lanzhou University of Technology
International Journal of Geomechanics | Year: 2014

To study the deformation property of large-thickness self-weight collapsible loess and to understand the moisture migration law and matrix suction characteristics, a 40-m-diameter soaking test was conducted in the field with self-weight collapsible loess at a thickness of 36.5 m. The results showed that (1) the field collapse deformation law of the large-thickness self-weight collapsible loess varied in two periods, namely, the soaking period and the water cutoff period; (2) during the soaking test, the distribution of crack patterns appeared from local to overall, from near to far, and from dense to sparse, then gradually extended; (3) the volumetric moisture content changed in different soil locations; (4) suction developed steadily before soaking, whereas with a large amount of water, suction dropped steeply within a short time; and (5) the water content of soil above 20 to 25 m increased rapidly and soon reached saturation, whereas the water content of soil below that depth increased slowly and reached saturation with difficulty. The test results may be useful for similar projects in the area of self-weight collapsible loess with large thickness, and to help revise Chinese codes for building construction in collapsible loess regions. © 2014 American Society of Civil Engineers.

Liu Y.L.,Gansu Construction Vocational Technical College
Advanced Materials Research | Year: 2014

Taking the deep foundation pit engineering of a Subway Station as background. The paper introduces the project's surroundings, geological and hydrological conditions of the proposed field and the retaining structural type. According to the engineering characteristics, the project was divided into four typical operating conditions, the deformation rules of deep foundation pit at subway station in tunneling are studied with the method of FLAC3D numerical simulation, the supporting structures choose by the bored piles and interior support. The analysis of the horizontal deformation of the retaining structures the settlement law and the influence sphere of surrounding soil. The conclusion in this paper can provides reference for the reasonable design and safety construction of deep foundation pit. © (2014) Trans Tech Publications, Switzerland.

Tao H.,Gansu Construction Vocational Technical College
Advanced Materials Research | Year: 2014

The paper introduces the application of prestressed anchors and soil nails support system in complex soil layer deep foundation pit engineering at Lanzhou region based on the deep foundation pit engineering in Gansu Provincial Hospital of TCM as the background and discusses its key technology. The effect shows that scheme of the design of foundation pit support engineering is reasonable and effective. The engineering meets requirements of design and environment. The monitoring results show that prestressed anchors can control the horizontal displacement and the change rate of slope′s vertical settlement effectively. The experience of engineering is significance for similar engineerings at Lanzhou region. © (2014) Trans Tech Publications, Switzerland.

Wang X.L.,Gansu Construction Vocational Technical College | Wang X.L.,Gansu Jianyuan Architectural Design Institute Co. | Wang X.L.,Lanzhou University of Technology
Advanced Materials Research | Year: 2014

In this paper, with the help of the finite element software ADINA, an actual composite soil nailed wall was solved. The dynamic response of the composite soil nailed wall is analyzed and discussed under the EL-Centro and man-made Lanzhou accelerogram. And the variation principles of the soil nailed wall which subjected to the earthquake, and the earthquake coupled with pore pressure, are demonstrated respectively. The results of the FEM dynamic analysis can be a useful reference for engineers of the design and construction of the composite soil nailed wall. © (2014) Trans Tech Publications, Switzerland.

Bao W.,Gansu Construction Vocational Technical College | Wang F.,Gansu provincial communications industry engineering supervision Ltd
Applied Mechanics and Materials | Year: 2012

The challenge in civil engineering construction is first to design and then to build, the structure should be of less cost, architecture appearance and ecological sustainability. Take Guangzhou International Conference Center as a sample, analyze the design characteristics of the structure, and discuss the special construction technology on different structures. The results shows that the architecture is of great success from the technological point of view, the special shape and complex structure are unique comparing with other architectures, which assure the high quality and large-span apperance of the architecture. © (2012) Trans Tech Publications, Switzerland.

Discover hidden collaborations