摘要:This paper discusses the Reissner's plates on elastic foundation.The elastic foundation is considered as two- paramerer and its effect to thick plates are taken into account by a set of govering differential equations. According to the foundamental solutions for bending problem on two- parameter foundation derived, three boundary integral equations denoted by generalized displacement functions are established. This method is suitable to solve the bending problem of thin or thick plates on two- parameter foundation with arbitary boundary condition, arbitary shape and arbitary load conditions
摘要:This paper presents a series of targets which are usefull for engineering.The paper also presents an adaptive weight function according to the fail mechanism of rockmass and a fuzzy aynthetic evaluation medel on rockmass blast ability.The model is applied to evaluate the blast ability of rockmass in an engineering and the result shows that the model is effective.
摘要:In this paper the elastoplastic stress fields near joint line in rockmass loaded by compress- shear are analyesd by the line field method in fracture mechanics with Mokr- Coulomb criterion. Through the matching conditions of the elastoplastic fields on their boundary, the relations between the length of plastic zone on the joint line and the compress- shear loads are found, and the fracture criterion of the discrete joint is also obtained
摘要:On the basis of the achivements of home and abroad,a study and fabrication of multi- module and multi- function intelligent design soft ware SBSDES has been completed successfully.The ES has been expounded systematically in the paper,such as knowledge- base, data- base,reasoning mechanism,graph function and user interface ,and so on.Finally,the SBSDES is used for design two roadways.The industrial tests show that SBSDES is scientific and practical.
摘要:This paper briefly describes the formed condition,classification, and general characteristics of the laterite clay in Beigu area and analyses the physical and mechanical properties, the features of swelling and shrinkage and the relativity between the coefficient of free swelling and plastic index of the laterite clay. Finally, some opinions on the suitability of the water content and liquid index of the laterite clay are presented
摘要:On the basis of investigations in field for years,some basic influences on layout and constructions of urbans and towns in mountainous area from geomorphological processes are studied.The results prove that geomorphological processes,especially catastrophic geomorphological processees (a mud- rock flow or a landslide) do important effect on the layout and construction of the urbans and towns.The paper also studies some effects on the urbans and towns from irreasonable human activities.
摘要:The boundary element methods for raft foundstion are coupled with substructuring method of space frames. The mixed method is presented with force- displacement. and example is analysed and the result shows that the laws of interaction are confirmed, and that there are high efficiency and little storage with this method
摘要:According to the characteristics of the shiplock high slope of Three- Gorges Project, this paper simplified the rock mass of the high slope as orthogonally anisotropical media.On the basis of recongnizing the nonlinear mechanics of excavation unloading,the paper prsents the nonlinear mechanics calculating method ,the theory of changing stiffen analysis. The calculating results agree fairly close to the measured one.By the excavating calculation of shiplock high slope, the paper shows that the rock mass will produce the large deformations,which have the large difference with the results of the old studies
摘要:Using basic principles of stereographic projection,block theory and rock mechanics,this paper tries to find a simple and easy method for determination of an optimum scheme for bolting unstable rocks on a rock slope in design of slope engineering.finally, examination and analysis is made of the completed project for bolting the unstable,high and steep rock slope on the campus of Chongqing University.
摘要:In this paper,a series of bolts and shotcrete experiments are made with the model materials which have different soft structure surfaces,and their acting mechanism is discussed.The experimental results have some practical values of the bolts and shotcrete design in underground engineering.
摘要:This paper comprehensively reviews various damage variables of jointed rock masses and their meaning. The practical occasion of these variables is discussed. And the paper points out the significance of appling the dynamic- damage variable into rocks engineering.
摘要:It is a problem difficult to solve in the world to protect ancient stone carvings from weathering.In this paper,the research state of protecting stone csrvings beaten in the open is summarized and discussed. In the print of seriously weathered stone carvings on the rock wall in the open, some new research method is proposcd, especially, hydrologic- geochemical reaction and weathered rock carvings due to subsidence of rainwater and groundwater permeation.