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Anhui, China

Fengyan Q.,West Anhui College | Haiyu G.,West Anhui College | Chengwei H.,West Anhui College | Jinsong Y.,West Anhui College
Electronic Journal of Geotechnical Engineering | Year: 2015

The cement-soil mixing pile measured by stress wave method was analyzed in this paper. The influence on the test results of different sensors, folder soil properties, the soil around the pile nature and pile nature was researched. The research results show that the speed sensor can get a better signal, the changes of folder soil nature affect the reflected waveform directly, especially when the lower strength of folder soil will affect the speed of the stress wave more. According to the relationship between dynamic elastic modulus of pile and speed of stress wave, corresponding formula was established. © 2015 ejge.

Qin F.,West Anhui College | Ge H.,West Anhui College | Hao C.,West Anhui College | Tu J.,West Anhui College
World Information on Earthquake Engineering | Year: 2015

In order to analyze the stability of base covered slope under seismic forces, the numerical simulation was used to calculate the influence of geometry of the slope, seismic wave characteristics and other factors on slope stability. Calculated results show that: under action of earthquake peak acceleration of 140 cm/s2, the critical slope gradient is about 27° for base covered slope wtih 60 m high, that is, the slope is instability when the gradient of slope is more than 27°. For base covered slope with gradient of 29°, its critical height is about 48 m, and therefore relationship between height and gradient of the base covered slope under critical condition was fitted with a power function, the fitting formula is y=5×107 x-4.132, where x is the slope gradient, y is the slope height. For the stability of base covered slope under earthatake, the most sensitive influencing factor is slope height, followed by slope gradient, and finally the peak acceleration of the earthquake. ©, 2015, Science and Technology Periodical Press. All right reserved.

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