|本期目录/Table of Contents|

[1]裴建中,王富玉.桥面防水材料拉伸性能及其评价指标[J].建筑科学与工程学报,2009,26(01):19-23.
　PEI Jian-zhong,WANG Fu-yu.Tensile Properties and Its Evaluated Indexes of Waterproofing Material for Bridge Decks[J].Journal of Architecture and Civil Engineering,2009,26(01):19-23.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
26卷
期数:
2009年01期
页码:
19-23
栏目:
出版日期:
2009-03-20

文章信息/Info

Title:
Tensile Properties and Its Evaluated Indexes of Waterproofing Material for Bridge Decks
作者:
裴建中1,王富玉2
1.长安大学特殊地区公路工程教育部重点实验室,陕西西安710064;2.吉林大学交通学院,吉林长春130022
Author(s):
PEI Jian-zhong1, WANG Fu-yu2
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an 710064, Shaanxi, China; 2. School of Transportation, Jilin University, Changchun 130022, Jilin, China
关键词:
桥面;  防水材料;  拉伸强度;  评价指标
Keywords:
bridge deck;  waterproofing material;  tensile strength;  evaluated index
分类号:
TU57
DOI:
-
文献标志码:
A
摘要:
进行了拉伸速度、试件宽度与长度等因素对典型桥面防水材料拉伸强度及断裂延伸率的影响规律试验; 分析了桥面防水层在基层存在裂缝和桥面存在负弯矩情况下的受力特征,由此提出了桥面防水材料拉伸性能的评价指标。结果表明:防水材料试件随拉伸速度变化而变化,速度较大时,试验结果不稳定; 断裂延伸率与试件宽度相关性不大,而拉伸强度与试件宽度成正比; 断裂延伸率随着拉伸长度的增加而逐渐减小,但强度没有明显的规律性; 试件老化对其拉伸强度和断裂延伸率均有显著影响,材料的强度和断裂延伸率比未老化前分别降低了10.9%和25.0%; 同时考虑基层存在裂缝和桥面存在负弯矩时,可以计算桥面防水材料的抗拉强度标准。经综合分析,确定桥面防水材料拉伸试验速度为100 mm·min-1,试件宽度为50 mm,长度为180 mm; 材料抗拉强度指标为36 N·cm-1。
Abstract:
Tests on the influencing rules of pulling speeds, specimen widths and lengths to tensile strength and fracture elongation were studied. Moreover, the force characteristics for bridge decks with negative moment and the cracks in base course were analyzed. Then, the evaluation indexes of tensile properties of waterproofing material for bridge decks were proposed. The results show that the waterproofing material specimens are subject to the changes of pulling speeds and the uncertainty attends test results in the relative high speed; the fracture elongations correlated weakly with specimen widths, but tensile strengths are directly proportional to speciemen widths; the fracture elongation reduces with the stretching length increasing gradually, however, the material intensity has not appeared any obvious regularity. Specimen aging has a significant impact on its tensile strength and fracture elongation, which show the material strength and fracture elongation decrease 10.9% and 25.0% respectively after aging. Taking into account of cracks in base course and negative moment for the bridge decks, the standard of tensile strength of waterproofing material for bridge decks can be calculated. By analyzing comprehensively, the pulling test speed of 100 mm·min-1, specimen width of 50 mm, length of 180 mm, material tensile strength index of 36 N·cm-1 for waterproofing material in bridge decks are gained.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2008-10-12
基金项目:国家自然科学基金项目(50608006); 陕西省自然科学基础研究计划项目(2007E223);?
作者简介:裴建中(1976-),男,山西五台人,副教授,工学博士,E-mail:jianzhongpei@163.com。
更新日期/Last Update: 2009-03-20