| 预应力钢结构微尺模型实验技术 |
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| 引用本文： | 唐柏鉴,马珺,沈超明,顾盛,彭小龙.预应力钢结构微尺模型实验技术[J].实验室研究与探索,2012,31(3):4-8. |
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| 作者姓名： | 唐柏鉴 马珺 沈超明 顾盛 彭小龙 |
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| 作者单位： | 江苏科技大学土木工程与建筑学院,江苏镇江,212003 |
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| 基金项目： | 国家自然科学基金，江苏省现代教育技术研究项目 |
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| 摘 要： | 为研究微尺模型中预应力拉索的相关实验技术,以竖向预应力钢结构体系中2个典型结构为对象进行了试验,主要阐述微尺试验模型的设计、预应力的施加与测定方法、外荷载的施加方法,并着重分析了这些方法的优缺点。结果表明,螺杆拧张法施加预应力能够较好地模拟拉索只受拉不受压的受力特点,但存在系统误差,与该法配套宜采用传感器测试拉索力;丝扣拧张法施加预应力相对比较精确,但不便于更换拉索,与该法配套宜采用应变片测试拉索力。
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| 关 键 词： | 预应力钢结构 微尺模型 预应力施加 预应力测试 |
Experiment Technology on Small-scale Model of Pre-stressed Steel Structure |
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| TANG Bai-jian
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MA Jun
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SHEN Chao-ming
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GU Sheng
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PENG Xiao-long.Experiment Technology on Small-scale Model of Pre-stressed Steel Structure[J].Laboratory Research and Exploration,2012,31(3):4-8. |
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| Authors: | TANG Bai-jian MA Jun SHEN Chao-ming GU Sheng PENG Xiao-long |
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| Institution: | (Civil Engineering Department,Jiangsu University of Science and Technology,Zhenjiang 212003,China) |
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| Abstract: | In order to study experiment technology of pre-stressed cable in small-scale models,experiments were conducted for two kinds of vertical pre-stressed steel structures.This paper mainly introduced the design of scale models,application and measurement of pre-stress,application of external load etc,and analyzed their advantage and disadvantage respectively.The results indicate that screw twisting method can ensure that cables bear only tension,but there exists system error,and sensor is suitable for this method.While thread twisting method applies pre-stress more accurately,cables can not be altered easily,and strain gauge is suitable for this method. |
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| Keywords: | pre-stressed steel structure small-scale model pre-stress application pre-stress measurement |
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