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61.
Two 16-storey frame-wall structures with slender coupling beams in regions of Intensity 8(0.2 g),with and without considering the stiffness reduction of the coupling beams,were designed.Nonlinear dynamic response analyses of two typical frame-wall structures subjected to several ground motions were carried out.The analyses were based on the quasi-tridimensional program for nonlinear dynamic response analysis TS-EPA.The analyses led to the following conclusions: Under rare earthquake actions,the coupling beams in framewall structures yield first.This shows that the coupling beam in frame-wall structures is the member at the forefront of earthquake resistance.Comparison of the analytic results of two couples with and without considering the stiffness reduction of the coupling beam found that,in view of the dynamic response to and the requirement for ductility under rare earthquake motions,reducing stiffness causes a minor unfavorable influence on the dynamic response of frame-wall structures. 相似文献
62.
Mechanical Properties of Concrete Cylinders Confined with CFRP Sheets Subjected to Axial Compression
Based on Drucker-Prager criterion with non-associated flow rule, numerical analysis of mechanical properties of concrete cylinders were carried out by using non-linear finite element method. The effect caused by various parameters such as wrap thickness, fiber orientation and concrete strength on axial mechanical properties of concrete cylinders is discussed. The results show that the results calculated by non-associated flow rule conform to that in the test. It is demonstrated that there is significant enhancement both in compressive strength and ductility of cylinders with the increase of wrap thickness. Moreover, the gain in axial compressive strength is observed to be higher for lower strength concrete and be highest in the cylinders wrapped with the hoop orientation. 相似文献
63.
This paper analyzes the steel reinforced concrete large span transfer truss joints using the finite element analysis software ANSYS, and get the joints deformation and the mechanics increase, such as deformation properties, stress distribution. The monitoring results during construction phase show that nonlinear numerical simulation analysis, which is in good agreement with the test results, is an effective method for the mechanical property analysis on this kind of structural components. 相似文献
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无论是在土建工程还是在桥梁工程中,混凝土是用途最广、用量最大的建筑材料之一。近百年来,混凝土强度的不断提高成为它主要的发展趋势。 相似文献
66.
在我国寒冷地区,冬季建筑工程施工常常出现质量问题,即易出现混凝土裂缝和钢筋锈蚀等现象.该文有针对性地论述了三种预防措施. 相似文献
67.
该文在旧桥改造维修中,对桥面垫层混凝土破坏机理及补强技术提出了一些看法和措施建议,可供工程实际应用参考。 相似文献
68.
浅议水泥混凝土路面裂缝的原因及防治 总被引:1,自引:0,他引:1
本文较详细地阐述了水泥混凝土路面产生裂缝的原因及在其施工过程中应注意的事项。 相似文献
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