湿热重载条件下混凝土桥梁沥青铺装防水粘结层的性能研究
发布时间：2018-08-04 09:22
【摘要】：近年来我国公路事业发展迅速,而桥梁作为公路网中的重要组成部分,在公路建设及运营中所起的作用十分明显。桥面铺装属于桥梁的重要组成部分,其质量的好坏影响着行车质量、桥梁的安全耐久性与经济效益。而防水粘结层作为桥面铺装的一部分有着非常重要的作用——既通过自身粘结力将水泥桥面板与沥青混凝土面层粘结为完整的一体,起到承上启下的作用,也通过自身良好的不透水性来抵御外来水分侵蚀桥梁内部,起到保护桥面板的作用。为了保证桥面铺装良好的路用性能,有必要对防水粘结层的性能与选择进行研究。本文基于广东省的湿热多雨的气候特点,结合室内实验及理论分析,对防水层粘结层材料的基本性能与路用性能进行系统的深入研究,将结果进行对比分析后优选出适合广东省水泥混凝土桥面使用的防水粘结层材料。本研究通过对广东地区公路桥梁的桥面病害进行调研,对防水粘结层原材料基本性能进行检测,并成型复合试件,通过一系列室内试验研究,得到以下研究成果:1、对AMP-100二阶反应型防水材料、FYT-1桥面防水材料、SBS改性沥青以及改性乳化沥青几种防水原材料的固含量、耐热度、粘结强度、拉伸强度等基本性能进行了试验检测。试验结果表明,四种材料的基本性能指标均符合《道桥用防水涂料》(JC/T975-2005)中的标准要求。2、在不同温度、剪切速率、界面处理方式条件下通过室内剪切试验评价各防水材料的抗剪切能力。试验结果表明,在相同温度条件下各材料抗剪强度大小顺序为SBS+瓜米石AMP-100FYT-1改性乳化沥青,且FYT-1在低温时抗剪性能较好,而AMP-100的高温抗剪性能较好;在剪切速率较低即重载条件下,SBS+瓜米石的抗剪性能为最佳,FYT-1与AMP-100次之,改性乳化沥青则较差;经凿毛处理的试件的抗剪强度明显比未凿毛的试件要高,最大增加了34.0%。3、在不同温度、是否浸水的条件下通过室内拉拔试验评价防水材料抗拉拔能力。试验结果表明,各防水材料的拉拔强度随着温度的增大而逐渐减小,且在相同温度条件下,拉拔性能优劣依次为:SBS+瓜米石AMP-100FYT-1改性乳化沥青;浸水后各材料的拉拔强度明显低于未浸水的试件。4、利用ABAQUS有限元软件对桥面铺装结构模型的层间剪应力与法向拉应力进行分析。结果表明,当车辆轴载增大一倍时,层间横向最大剪应力最大增长为原来的1.72倍,层间纵向最大剪应力最大增长为原来的3.04倍,层间法向拉应力最大增大为原来的2.52倍。对不同工况下分析后可得到层间最大剪应力为0.39MPa.,最大法向拉应力为0.21MPa,建议广东地区在25℃条件下防水材料的抗剪强度应不小于0.45MPa,抗拉拔强度不小于0.3MPa。防水层厚度的变化对层间应力没有明显影响,建议广东省地区桥面铺装防水层的施工厚度以3mm为最佳;防水层模量以100~300MPa为最佳。5、对水性涂料防水粘结层的施工关键技术进行了研究,最后综合对几种材料的抗剪性能、拉拔性能以及经济效益进行对比分析,优选出适合广东地区使用的最佳防水材料为SBS改性沥青+瓜米石。
[Abstract]:In recent years, the road cause has developed rapidly in our country. As an important part of the highway network, bridge plays an obvious role in highway construction and operation. The bridge deck pavement belongs to the important part of the bridge. The quality of the bridge affects the traffic quality, the safety and durability of the bridge, and the economic benefit. The waterproof bond layer is used as the bridge. Part of the surface pavement has a very important role - both cement bridge deck and asphalt concrete face are bonded to a complete integration through their own cohesive force. It plays an important role, and it also protects the bridge deck by protecting the bridge deck through its good impermeability to protect the bridge deck. It is necessary to study the performance and selection of the waterproof adhesive layer. Based on the climate characteristics of wet and hot and rainy weather in Guangdong Province, this paper systematically studies the basic and road properties of the waterproof layer bonded layer material combined with the indoor experiment and theoretical analysis. The results are compared and analyzed. The waterproof adhesive layer material used in the cement concrete bridge of Guangdong province. Through the investigation of the bridge surface disease of the highway bridges in Guangdong, the basic properties of the waterproof adhesive layer were tested and the composite specimens were formed. Through a series of laboratory tests, the following research results were obtained: 1, the two order reaction prevention of AMP-100 Water material, FYT-1 bridge surface waterproof material, SBS modified asphalt and modified emulsified bitumen are tested for the solid content, heat resistance, bond strength, tensile strength and other basic properties. The test results show that the basic performance indexes of the four materials are all in accordance with the standard requirement.2 in the waterproofing coating > (JC/T975-2005) for the road and bridge. Under the conditions of different temperature, shear rate and interface treatment, the shear resistance of each waterproof material is evaluated by indoor shear test. The experimental results show that the order of shear strength of each material under the same temperature is SBS+ AMP-100FYT-1 modified emulsified asphalt, and the shear resistance of FYT-1 at low temperature is better, while AMP-100 is higher. Under the condition of low shear rate, the shear property of SBS+ is the best, FYT-1 and AMP-100 are the best, the modified emulsified asphalt is poor; the shear strength of the specimen treated by the chisel is obviously higher than that of the unchiseled specimen, and the maximum increase is 34%.3 at different temperatures and under the condition of water immersion. The tensile strength of the waterproof material is evaluated by the drawing test. The test results show that the drawing strength of each waterproof material decreases gradually with the increase of temperature. And under the same temperature conditions, the drawing properties of the materials are in turn SBS+ AMP-100FYT-1 modified emulsified asphalt, and the drawing strength of each material after immersion is obviously lower than that of the unsoaked specimen.4, The ABAQUS finite element software is used to analyze the interlayer shear stress and normal tensile stress of the bridge deck pavement structure model. The results show that when the vehicle axle load is doubled, the maximum shear stress of the interlayer transverse maximum shear stress is 1.72 times as large as the original, and the maximum shear stress of the interlayer longitudinal maximum shear stress is 3.04 times as much as the original, and the maximum tensile stress between the layers increases greatly. For the original 2.52 times, the maximum shear stress of the interlayer can be 0.39MPa. and the maximum normal tensile stress is 0.21MPa. It is suggested that the shear strength of the waterproof material should not be less than 0.45MPa under the condition of 25 C, and the change of the tensile strength not less than the thickness of the 0.3MPa. waterproof layer has no obvious influence on the interlayer stress in Guangdong. The construction thickness of the bridge deck pavement waterproof layer in Guangdong province is 3mm, and the waterproof layer modulus takes 100~300MPa as the best.5. The key technology of waterproofing coating is studied. Finally, the shear performance, drawing performance and economic benefit of several materials are compared and analyzed, and it is suitable for the use of Guangdong area. The best waterproof material is SBS modified asphalt + Cucumber stone.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U443.33
本文编号：2163382
[Abstract]:In recent years, the road cause has developed rapidly in our country. As an important part of the highway network, bridge plays an obvious role in highway construction and operation. The bridge deck pavement belongs to the important part of the bridge. The quality of the bridge affects the traffic quality, the safety and durability of the bridge, and the economic benefit. The waterproof bond layer is used as the bridge. Part of the surface pavement has a very important role - both cement bridge deck and asphalt concrete face are bonded to a complete integration through their own cohesive force. It plays an important role, and it also protects the bridge deck by protecting the bridge deck through its good impermeability to protect the bridge deck. It is necessary to study the performance and selection of the waterproof adhesive layer. Based on the climate characteristics of wet and hot and rainy weather in Guangdong Province, this paper systematically studies the basic and road properties of the waterproof layer bonded layer material combined with the indoor experiment and theoretical analysis. The results are compared and analyzed. The waterproof adhesive layer material used in the cement concrete bridge of Guangdong province. Through the investigation of the bridge surface disease of the highway bridges in Guangdong, the basic properties of the waterproof adhesive layer were tested and the composite specimens were formed. Through a series of laboratory tests, the following research results were obtained: 1, the two order reaction prevention of AMP-100 Water material, FYT-1 bridge surface waterproof material, SBS modified asphalt and modified emulsified bitumen are tested for the solid content, heat resistance, bond strength, tensile strength and other basic properties. The test results show that the basic performance indexes of the four materials are all in accordance with the standard requirement.2 in the waterproofing coating > (JC/T975-2005) for the road and bridge. Under the conditions of different temperature, shear rate and interface treatment, the shear resistance of each waterproof material is evaluated by indoor shear test. The experimental results show that the order of shear strength of each material under the same temperature is SBS+ AMP-100FYT-1 modified emulsified asphalt, and the shear resistance of FYT-1 at low temperature is better, while AMP-100 is higher. Under the condition of low shear rate, the shear property of SBS+ is the best, FYT-1 and AMP-100 are the best, the modified emulsified asphalt is poor; the shear strength of the specimen treated by the chisel is obviously higher than that of the unchiseled specimen, and the maximum increase is 34%.3 at different temperatures and under the condition of water immersion. The tensile strength of the waterproof material is evaluated by the drawing test. The test results show that the drawing strength of each waterproof material decreases gradually with the increase of temperature. And under the same temperature conditions, the drawing properties of the materials are in turn SBS+ AMP-100FYT-1 modified emulsified asphalt, and the drawing strength of each material after immersion is obviously lower than that of the unsoaked specimen.4, The ABAQUS finite element software is used to analyze the interlayer shear stress and normal tensile stress of the bridge deck pavement structure model. The results show that when the vehicle axle load is doubled, the maximum shear stress of the interlayer transverse maximum shear stress is 1.72 times as large as the original, and the maximum shear stress of the interlayer longitudinal maximum shear stress is 3.04 times as much as the original, and the maximum tensile stress between the layers increases greatly. For the original 2.52 times, the maximum shear stress of the interlayer can be 0.39MPa. and the maximum normal tensile stress is 0.21MPa. It is suggested that the shear strength of the waterproof material should not be less than 0.45MPa under the condition of 25 C, and the change of the tensile strength not less than the thickness of the 0.3MPa. waterproof layer has no obvious influence on the interlayer stress in Guangdong. The construction thickness of the bridge deck pavement waterproof layer in Guangdong province is 3mm, and the waterproof layer modulus takes 100~300MPa as the best.5. The key technology of waterproofing coating is studied. Finally, the shear performance, drawing performance and economic benefit of several materials are compared and analyzed, and it is suitable for the use of Guangdong area. The best waterproof material is SBS modified asphalt + Cucumber stone.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U443.33
【参考文献】
相关期刊论文 前10条
1 詹建林;;浅析防水粘结层在沥青层桥面铺装的重要性及施工注意事项[J];福建交通科技;2017年02期
2 吴文佑;;水泥混凝土桥梁桥面防水粘结层破坏原因分析[J];江西建材;2016年23期
3 李志;刘东美;;桥面沥青铺装层早期病害及预防性养护技术研究[J];山东工业技术;2016年18期
4 高彦杰;;桥面铺装常用防水粘结层材料力学性能研究[J];北方交通;2016年05期
5 刘佳;;水泥砼桥桥面铺装防水粘结层剪切试验研究[J];山东交通科技;2016年02期
6 吴立新;吕巍;赵阳;;基于性能试验的典型桥面防水粘结层应用探讨[J];北方交通;2014年06期
7 宋建宁;;不同水泥混凝土桥面防水粘结层材料试验研究[J];城市道桥与防洪;2013年08期
8 文滔;;混凝土桥面铺装环氧沥青防水粘结层性能研究[J];四川建筑科学研究;2012年06期
9 马亮;;防水粘结层参数对桥面铺装层间剪应力的影响[J];交通标准化;2012年11期
10 戴刚;吕燕;;混凝土桥面铺装防水粘结层研究[J];中国建筑防水;2011年24期
相关硕士学位论文 前10条
1 张东鲁;桥面防水粘结层材料性能评价与应用研究[D];华南理工大学;2016年
2 石程光;桥面铺装材料结构组合与防水粘结层性能研究[D];吉林大学;2015年
3 曹思法;辽河滨海公路大桥桥面防水粘结层技术研究[D];吉林大学;2015年
4 郭健彬;水泥混凝土桥面防水粘结层性能研究及应用[D];华南理工大学;2014年
5 王笃喜;水泥混凝土桥面沥青混凝土铺装防水粘结层的性能研究[D];重庆交通大学;2012年
6 蔡燕霞;湿热多雨地区复合桥面铺装防水粘结层研究[D];长安大学;2011年
7 周键炜;水泥混凝土桥面防水粘结层的试验研究[D];南京林业大学;2009年
8 郭鑫淼;水泥混凝土桥铺装层防水粘结材料性能研究[D];长安大学;2009年
9 刘聪慧;几种水泥混凝土桥面防水粘结层性能研究[D];武汉理工大学;2009年
10 常建勇;沥青混合料抗剪试验方法及抗剪性能研究[D];长安大学;2009年
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