1997, 19(2):1-11. DOI: 10.11835/j.issn.1674-4764.1997.02.001
Abstract: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
1997, 19(2):12-20. DOI: 10.11835/j.issn.1674-4764.1997.02.002
Abstract: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.
Liu Dongyan Ye Xiaoming Zhu Fan
1997, 19(2):21-30. DOI: 10.11835/j.issn.1674-4764.1997.02.003
Abstract:从分析断续节理岩体中岩桥的破坏模式出发,建立计算断续节理岩体极限强度的理论公式,定量地讨论了节理的排列方式及其力学性质对岩体强度各向异性的影响。通过试验验证,本文所建公式与试验值吻合较好。与前人研究成果比较,本公式具有适应性强,可靠度高的特点,可用于确定实际工程的节理岩体承载力并进行岩体稳定性评价。
1997, 19(2):31-35. DOI: 10.11835/j.issn.1674-4764.1997.02.004
Abstract: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
1997, 19(2):36-41. DOI: 10.11835/j.issn.1674-4764.1997.02.005
Abstract: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.
1997, 19(2):42-47. DOI: 10.11835/j.issn.1674-4764.1997.02.006
Abstract: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
1997, 19(2):48-53. DOI: 10.11835/j.issn.1674-4764.1997.02.007
Abstract:以重庆红粘土为研究对象,通过对重庆红粘土在不同应力路径加荷条件下的应力-应变关系的分析研究,运用“土的本构关系图象程序”对重庆红粘土本构关系,进行了四种本要模型验证,认为非线性弹性成都科技大学K-G模型和殷宗泽双曲服面弹塑性模型能反映重庆红粘土应力-应变关系的本构模型,提出了相应的模型参数。
1997, 19(2):54-58. DOI: 10.11835/j.issn.1674-4764.1997.02.008
Abstract: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.
1997, 19(2):59-64. DOI: 10.11835/j.issn.1674-4764.1997.02.009
Abstract: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
1997, 19(2):72-79. DOI: 10.11835/j.issn.1674-4764.1997.02.011
Abstract: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
1997, 19(2):80-86. DOI: 10.11835/j.issn.1674-4764.1997.02.012
Abstract:为了较为真实地反映边坡在地震作用下的真实行为,本文对岩石边坡问题作了简化模型的振动台动力试验。对于模型的夹层效应,空间作用,荷载的频幅特性与历时特性等都作了较为全面的试验研究。提出了边坡动力残余位移的累积计算公式。将试验结果与本文提出的本构预测相比较,表明二者是一致的。
1997, 19(2):87-93. DOI: 10.11835/j.issn.1674-4764.1997.02.013
Abstract: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.
1997, 19(2):94-99. DOI: 10.11835/j.issn.1674-4764.1997.02.014
Abstract: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.
1997, 19(2):100-105. DOI: 10.11835/j.issn.1674-4764.1997.02.015
Abstract: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.
Wang Dongyun Liu Dongyan Zhang Zanxun
1997, 19(2):106-112. DOI: 10.11835/j.issn.1674-4764.1997.02.016
Abstract: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.
1997, 19(2):113-119. DOI: 10.11835/j.issn.1674-4764.1997.02.017
Abstract:涉及岩石地基承载力统计计算的现行国家规范有1989年颁布的《建筑地基基础设计规范》和94年颁布的《岩石工程勘察规范》。两部规范对岩石单轴抗压强度的标准以及据此计算的岩石地基承载力设计值的计算方法显著不同。使工程地质勘察生产部门的技术人员无所适从,造成了不应有的混乱。本文就这一问题对两部规范的有关规定和计算公式结合工程实例进行分析。并提出解决办法和建议。
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