地震减灾工程下格宾石笼拦挡坝支护技术研究
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摘要
鉴于格宾石笼护岸、护坡等优质特性,对其应用至地震减灾工程进行研究。经分析可知,格宾石笼主要利用双绞合六边形金属网片组合为箱笼,再装填石料堆筑构成防护整体;格宾石笼具有高强度耐久性、透水性、整体性与柔韧性和施工过程简单便利等特征。依据格宾石笼构造与特性分析,分别将地震减灾工程下格宾石笼拦挡坝施工划分为格宾石笼护基与格宾石笼护坡两部分进行研究。利用测量放线、挖掘基础、规整地基、铺垫反滤层、格宾放置与连接、支顶加固、石料装填封盖等步骤实现格宾石笼护基施工。通过削坡、铺设土工布、砂砾垫层、安装网箱、装填石料和封盖等步骤实现格宾石笼护坡施工。分别在冲击力、位移和能量三方面验证格宾石笼拦挡坝支护技术,实验结果表明,冲击力和坝体自身材料性质有关联,格宾拦挡坝材料属于柔性材料,冲击力由此减小,耗费冲击力能量效果十分明显;坝体可以利用整个结构全部能量承担很大负载;格宾石笼拦挡坝体耗能效果显然优于浆砌石坝。
In view of the high quality characteristics of Gebin stone cage bank protection and slope protection,the application of Gebin stone cage to earthquake disaster reduction engineering is studied. The analysis shows that Gebin cage is mainly composed of twisted hexagonal metal mesh, which is then filled with stone material to form a protective whole. the Gebin cage has high strength durability, water permeability, integrity and flexibility. And the construction process is simple and convenient. According to the structure and characteristics analysis of Gebin stone cage, the construction of Gebin stone cage dam under earthquake disaster reduction project is divided into two parts: Gebin stone cage foundation and Gebin stone cage slope protection. The construction of the gabstone stone cage foundation is realized by the steps of measuring the paying line,excavating the foundation, arranging the foundation, laying the filter layer, placing and connecting the girder,reinforcing the roof, and sealing the stone. The construction of the Gebin stone cage slope protection is carried out by steps such as cutting the slope, laying the geotextile, gravel cushion, installing the cage, filling the stone and sealing. The gabstone cage dam support technology was verified in terms of impact force, displacement and energy. The experimental results show that the impact force is related to the material properties of the dam.The dambing dam material is a flexible material, and the impact force is reduced. Small, energy-consuming impact energy is very obvious; the dam can use the entire energy of the entire structure to bear a large load; the energy consumption effect of the Gebin stone cage to block the dam is obviously better than the masonry dam.
In view of the high quality characteristics of Gebin stone cage bank protection and slope protection,the application of Gebin stone cage to earthquake disaster reduction engineering is studied. The analysis shows that Gebin cage is mainly composed of twisted hexagonal metal mesh, which is then filled with stone material to form a protective whole. the Gebin cage has high strength durability, water permeability, integrity and flexibility. And the construction process is simple and convenient. According to the structure and characteristics analysis of Gebin stone cage, the construction of Gebin stone cage dam under earthquake disaster reduction project is divided into two parts: Gebin stone cage foundation and Gebin stone cage slope protection. The construction of the gabstone stone cage foundation is realized by the steps of measuring the paying line,excavating the foundation, arranging the foundation, laying the filter layer, placing and connecting the girder,reinforcing the roof, and sealing the stone. The construction of the Gebin stone cage slope protection is carried out by steps such as cutting the slope, laying the geotextile, gravel cushion, installing the cage, filling the stone and sealing. The gabstone cage dam support technology was verified in terms of impact force, displacement and energy. The experimental results show that the impact force is related to the material properties of the dam.The dambing dam material is a flexible material, and the impact force is reduced. Small, energy-consuming impact energy is very obvious; the dam can use the entire energy of the entire structure to bear a large load; the energy consumption effect of the Gebin stone cage to block the dam is obviously better than the masonry dam.
引文
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[10]白云.地震断层滑动对地质形变的测绘研究[J].华南地震,2018,38(1):112-117.
[11]周昌栋,袁庆华,代明净,等.悬索桥锚碇基础强透水地层施工防渗技术[J].世界桥梁,2016,44(5):11-15.
[12]王秋生,王洪洋,苏瑞林.加筋无黏性土石坝漫顶溃坝试验研究[J].中国水利水电科学研究院学报,2017,15(4):263-271.
[13]韩彰,苏怀智,李慧.考虑渗流体力的某大坝地震响应仿真分析[J].水利水电科技进展,2018,38(2):70-76.
[14]白泉,韩晶晶,康玉梅,等.小波包变换中地震信号的结点序号到频带序号的转换算法[J].地震工程学报,2016,38(6):991-996.
[2]韩延申,陈伟庆. 6流非对称40t中间包挡墙和挡坝对帘线钢盘条夹杂物的影响[J].特殊钢,2016,37(3):25-27.
[3]李俊杰,王秀丽,冉永红.泥石流作用下拦挡坝的流固耦合分析[J].兰州理工大学学报,2017,43(2):127-132.
[4]朱晓秦,魏建忠,陈自强,等.丰满水电站重建工程大坝碾压混凝土现场工艺试验[J].水利水电技术,2016,47(6):115-119.
[5]于献彬,陈晓清,赵万玉,等.透水型拦挡坝排泄孔开口参数对坝体应力场影响规律研究[J].防灾减灾工程学报,2016,36(6):1015-1025.
[6]王一咪,谭潇.群体涵洞的地震灾害影响评价方法[J].华南地震,2018,38(3):83-87.
[7]阿比尔的,郑颖人,赖杰,等.牌坊坝滑坡双排桩+锚索支护性能研究[J].地下空间与工程学报,2016,12(4):1033-1038.
[8]唐浩,石秀峰,唐亮,等.液化场地桥梁群桩-土耦合体系强震反应分析[J].地震工程学报,2016,38(6):869-876.
[9]柯传芳,于胜利.白鹤滩水电站左岸坝基柱状节理开挖松弛特性试验研究[J].长江科学院院报,2017,34(6):128-131.
[10]白云.地震断层滑动对地质形变的测绘研究[J].华南地震,2018,38(1):112-117.
[11]周昌栋,袁庆华,代明净,等.悬索桥锚碇基础强透水地层施工防渗技术[J].世界桥梁,2016,44(5):11-15.
[12]王秋生,王洪洋,苏瑞林.加筋无黏性土石坝漫顶溃坝试验研究[J].中国水利水电科学研究院学报,2017,15(4):263-271.
[13]韩彰,苏怀智,李慧.考虑渗流体力的某大坝地震响应仿真分析[J].水利水电科技进展,2018,38(2):70-76.
[14]白泉,韩晶晶,康玉梅,等.小波包变换中地震信号的结点序号到频带序号的转换算法[J].地震工程学报,2016,38(6):991-996.