Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Suspension bridge anchorage combined foundation structure on terrace terrain and method
The invention discloses a suspension bridge anchorage combined foundation structure on a terrace terrain. A foundation is deeply buried and located above the highest water level by using the terrace terrain, internal and external hydraulic connection of a foundation pit is cut off, an anchorage foundation supporting form involves cut slope supporting, secant pile wall supporting and a crown beam,and a secant pile wall enclosure structure is embedded in a lower rock body layer along an anchorage foundation side line; and a plain concrete cushion layer is arranged under the anchorage foundation, a bearing stratum foundation reinforcing body is arranged under the plain concrete cushion layer, and the reinforcing body is arranged in an anchorage foundation foretoe resistance area. By adjusting grouting gaps, grouting depths and grouting parameters of all areas, the rigidity of partitions of the foundation reinforcing body is coordinated with the basic rigidity and load, and uneven settlement is reduced; according to the rigidity of the grouted and reinforced foundation, a post-cast strip is arranged in a shallow-buried gravity anchorage foundation to reduce the influence of uneven settlement of the foundation on a main body structure of a suspension bridge; and the reinforcement body is arranged in the foretoe resistance area, so that the horizontal resistance and anti-slip stability of the foundation in the operation period are improved.
本发明公开了一种阶地地形上悬索桥锚碇组合基础结构，利用阶地地形设置基础埋深位于最高水位上方，切断基坑内外水力联系，锚碇基础支护形式为放坡支护+咬合桩支护+冠梁，咬合桩围护结构沿锚碇基础边线嵌入下部岩体层；素混凝土垫层设置在锚碇基础下方，持力层地基加固体设置在素混凝土垫层下方，加固体设置在锚碇基础前趾抗力区域。本发明通过调整各区域的注浆间距、注浆深度和注浆参数，使地基加固体分区的刚度与基础刚度和荷载协调，减小不均匀沉降；根据注浆加固后的地基刚度，在浅埋重力式锚碇基础内设置后浇带以减小地基不均匀沉降对悬索桥主体结构的影响；在前趾抗力区设置加固体，增加运营期的水平抗力和基础的抗滑移稳定性。
Suspension bridge anchorage combined foundation structure on terrace terrain and method
The invention discloses a suspension bridge anchorage combined foundation structure on a terrace terrain. A foundation is deeply buried and located above the highest water level by using the terrace terrain, internal and external hydraulic connection of a foundation pit is cut off, an anchorage foundation supporting form involves cut slope supporting, secant pile wall supporting and a crown beam,and a secant pile wall enclosure structure is embedded in a lower rock body layer along an anchorage foundation side line; and a plain concrete cushion layer is arranged under the anchorage foundation, a bearing stratum foundation reinforcing body is arranged under the plain concrete cushion layer, and the reinforcing body is arranged in an anchorage foundation foretoe resistance area. By adjusting grouting gaps, grouting depths and grouting parameters of all areas, the rigidity of partitions of the foundation reinforcing body is coordinated with the basic rigidity and load, and uneven settlement is reduced; according to the rigidity of the grouted and reinforced foundation, a post-cast strip is arranged in a shallow-buried gravity anchorage foundation to reduce the influence of uneven settlement of the foundation on a main body structure of a suspension bridge; and the reinforcement body is arranged in the foretoe resistance area, so that the horizontal resistance and anti-slip stability of the foundation in the operation period are improved.
本发明公开了一种阶地地形上悬索桥锚碇组合基础结构，利用阶地地形设置基础埋深位于最高水位上方，切断基坑内外水力联系，锚碇基础支护形式为放坡支护+咬合桩支护+冠梁，咬合桩围护结构沿锚碇基础边线嵌入下部岩体层；素混凝土垫层设置在锚碇基础下方，持力层地基加固体设置在素混凝土垫层下方，加固体设置在锚碇基础前趾抗力区域。本发明通过调整各区域的注浆间距、注浆深度和注浆参数，使地基加固体分区的刚度与基础刚度和荷载协调，减小不均匀沉降；根据注浆加固后的地基刚度，在浅埋重力式锚碇基础内设置后浇带以减小地基不均匀沉降对悬索桥主体结构的影响；在前趾抗力区设置加固体，增加运营期的水平抗力和基础的抗滑移稳定性。
Suspension bridge anchorage combined foundation structure on terrace terrain and method
一种阶地地形上悬索桥锚碇组合基础结构及其方法
MU BAOGANG (Autor:in) / JIANG KAIYU (Autor:in) / DAI MINGJING (Autor:in) / HUANG CHUBIN (Autor:in) / ZHANG HOUDENG (Autor:in) / WANG BIBO (Autor:in) / WANG LINGPENG (Autor:in) / GONG WEIMING (Autor:in)
29.09.2020
Patent
Elektronische Ressource
Chinesisch
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