摘要：
The cracking bending strength for steel-polypropylene hybrid fiber reinforced concrete (HFRC) had been studied based on experimental test. the inicial cracking strength achieve significant improvement compare to plain concrete, and the highest increase is 16.7%. There is a synergistic effect exist when steel fiber is 1.0% in volume or polypropylene fiber is 0.1% in volume, and the synergistic effect raise to vertex (1.043) when both of those two requirements are fulfilled.
会议论文集名称：
Advances in textile engineering and materials III: Selected, peer reviewed papers from the 3rd International Conference on Textile Engineering and Materials (ICTEM2013), August 24-25, 2013, Dalian, China
摘要：
In order to improve the hardness and strength of the permeable concrete, rigid polymeric fibers are mixed to the concrete. Compressive strength tests, flexural strength tests, tensile splitting strength tests and permeable performance tests prove that the rigid polymeric fibers could increase the hardness and strength of the permeable concrete. The optimized mix proportion and forming process are recommended to support the application of the permeable concrete.
摘要：
In order to study the effect of fibers to the anti-crack performance of the concrete, sixteen different plat restraint specimens with four different fiber mixing amount (steel fiber is 0, 0.5%, 1%, 1.5%, and polypropylene fiber is 0, 0.1%, 0.2%, 0.3% respectively), are selected to comparison about the influence on the anti-cracking property of the hybrid fiber concrete, single fiber reinforced concrete and plain concrete. Experiments show that fibers increasing the anti-crack performance of the concrete significantly. The relationship between fibers’ content and the crack area is analyzed, and the microscopic mechanism of the anti-crack performance is discussed. Considering the economy and the convenient for construction, the column ratio of 0.5% steel fiber and 0.1% polypropylene fiber is recommended.
摘要：
Orthogonal tests are designed for hybrid fiber reinforced concrete. Bending toughness of hybrid fiber reinforced concrete, with the substrate intensity C30, the quantity of the volume for the steel fiber dosage 0~1.5% and polypropylene fiber dosage 0~0.3%, are studied. The results show that the hybrid fibers significantly improve the toughness of the concrete matrix. When the dosage reaches to a certain number, the affection of fiber toughness is decreased. Based on the test results the best dosage of hybrid fibers which is the steel fiber 1% mixed with 0.1% polypropylene fiber is recommended.
作者机构：
[谢桂华; 刘荣桂] Faculty of Science, Jiangsu University, Zhenjiang 212013, China;[李继祥] Department of Civil Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[张家生; 谢桂华] School of Civil and Architectural Engineering, Central South University, Changsha 410075, China
通讯机构：
Faculty of Science, Jiangsu University, China
作者机构：
[李继祥; 刘肖凡] School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China;[李继祥] Faculty of Engineering, China University of Geosciences, Wuhan 430074, China;[张元元] School of Civil Engineering, Wuhan University, Wuhan 430072, China
通讯机构：
School of Civil Engineering and Architecture, Wuhan Polytechnic University, China
作者机构：
[张家生; 谢桂华] School of Civil Engineering and Architecture, Central South University, Changsha 410075, China;[李继祥] Department of Civil Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[谢桂华] Faculty of Science, Jiangsu University, Zhenjiang 212013, China
通讯机构：
School of Civil Engineering and Architecture, Central South University, China
摘要：
Rainfall is one of main factors that affect the slope stability. Rainfall infiltration will change the degree of saturation determination of soil, and further influence the pore water pressure and the permeability coefficient of the medium. Based on the saturated-unsaturated seepage theory and the effect of rainfall infiltration, coupled with two phase medium of unsaturated soil and water, numerical simulation of soil slope under rainfall condition is carried out using the strength reduction finite element method. Changes of the slope displacement, pore pressure and safety factor under different rainfall periods and rainfall intensities are discussed. This study can provide important data for the slope stability analysis and landslide prediction.
摘要：
Based of the fact that the theoretical study of the short-leg shear wall falls behind the practice in China, cyclic reversed loading tests on six reinforced short-leg shear walls with 1:2 scales are carried out. The damage form and working capability of the specimen show that the final damage of the specimens are caused by the failure of the connecting beam, which is the weak part of the structure. The loading capacity of SLSW with flanged-walls is better than those without flanged-wall. Finite element analysis software is used to establish a part entity FE model of the SLSW The working performance of the SLSW in the building is analyzed. Based on the test and calculation achievements, some beneficial suggestions are put forwarded for the selection of this structure in high-rise building.
会议名称：
2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)
会议时间：
2009-04-26
会议地点：
武汉
会议论文集名称：
2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)论文集
关键词：
porous ceramics;flaw;pressure field;range of influence
摘要：
Porous ceramics have a wide range of applications as filter, cleaning cartridge, and segregator in auto-industry, metallurgy, petrifaction, and environmental protection. Numerical simulation of microcosmic seepage in two porous ceramics models, one with a single flaw, and another one without, was conducted base on N-S equation, and the rang of influence of flaw on pressure field in seepage of porous ceramics was studied by contrastive analysis. Results showed that the range of influence on pressure of flaw was one time of size of ceramics grain on the vertical direction of flow while two time of size of ceramics grain on the parallel direction of flow.
期刊：
3RD INTERNATIONAL SYMPOSIUM ON MODERN MINING & SAFETY TECHNOLOGY PROCEEDINGS,2008年:1059-1062
通讯作者：
He Xiang
作者机构：
[He Xiang; Liu Jianjun; Li Jixiang] Wuhan Polytechn Univ, Fac Civil Engn, Wuhan 430023, Peoples R China.
通讯机构：
[He Xiang] W;Wuhan Polytechn Univ, Fac Civil Engn, Wuhan 430023, Peoples R China.
会议名称：
The 3rd International Symposium on Modern Mining & Safety Technology Proceedings(第三届现代采矿与安全技术国际学术会议)
会议时间：
2008-08-04
会议地点：
辽宁阜新
会议论文集名称：
The 3rd International Symposium on Modern Mining & Safety Technology Proceedings(第三届现代采矿与安全技术国际学术会议)论文集
关键词：
random reliability;fluid-solid interaction;random field;local average method;stochastic finite element method
摘要：
The parameters of the rock and soils in the opencast mine with spatial variation is treated as a randoM field. The random field is spatially meshed into random field meshes which in consistence with the finite element mesh. Then the distributive character of the parameters in each elements and the covariance between parameters in different elements are computed with a locally averaging method. The Interaction between the underground water and the rock and soils in the slope is described with the Biot consolidation equations. The coupled process of the solid and fluid interaction is simulated with stochastic finite element method, which computes the distributive character of the stress, the deformation and the pore pressure in the slope. The potential sliding surface is treated as the collection of the elements it crossing through and its limit state function is treated as the sum of the limit state functions of the elements. Then, the reliability index and the corresponding failure probability of the potential sliding surface are computed basing one the theory of reliability. A high lope of a opencast mine is taken as case study, where the reliability index and the corresponding failure probability are computed in both case of coupled and uncoupled process between the underground water and the soils in the slope with random parameters. Computed results prove that failure probability is higher in the coupled case, which is in coincidence with the facts in geotechnical engineering.
作者机构：
[李继祥] Department of Civil Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[张家生; 贺建清] School of Civil Engineering and Soil Architecture, Central South University, Changsha 410075, China
通讯机构：
Department of Civil Engineering, Wuhan Polytechnic University, China
