Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for closure construction of non-stiff framework in triangular area of open-web rigid frame bridge
The invention belongs to the technical field of open-web rigid frame bridge construction, and particularly relates to an open-web rigid frame bridge triangular area stiff-free framework closure construction method. An open-web rigid frame bridge triangular area stiff-free framework closure construction method comprises the steps that before open-web triangular area intersection section box girder intersection section construction, two vertical supporting steel pipe stand columns are arranged between an upper chord box girder and a lower chord box girder of a front pair of girder sections, and the bottom ends of the stand columns are welded to an embedded steel plate on a top plate of the lower chord box girder; and meanwhile, jacking force is applied between the top end of the stand column and the upper chord box girder bottom plate, then a steel cushion block and an adjusting steel plate are additionally plugged in a gap between the top face of the stand column and the box girder bottom plate, the pre-applied jacking force is kept, finally, the hanging basket moves forwards, and intersection section concrete is poured. According to the method, the uprights are mounted between the upper chord and the lower chord of the previous section of beam of the intersection section of the open-web triangular area intersection section box beam, and the jacking force is applied, so that the upper chord box beam and the lower chord box beam are deformed in a coordinated manner, relative displacement is avoided, and the connection quality of newly-poured concrete of the intersection section and concrete of the previous section is ensured.
本发明属于空腹式刚构桥施工技术领域，特别涉及一种空腹式刚构桥三角区无劲性骨架合龙施工方法。一种空腹式刚构桥三角区无劲性骨架合龙施工方法，在空腹三角区交汇段箱梁交汇段施工前，在前一对梁段的上、下弦箱梁之间设置两根竖向支撑钢管立柱，立柱底端焊接在下弦箱梁顶板上的预埋钢板上，同时在立柱顶端与上弦箱梁底板之间施加顶升力，然后在立柱顶面与箱梁底板的空隙之间加塞钢垫块及调节钢板，保持住预加的顶升力，最后挂篮前行，浇筑交汇段混凝土。本发明通过在空腹三角区交汇段箱梁交汇段前一节段梁上、下弦之间安装的立柱和施加顶升力，使上、下弦箱梁之间变形协调，不会发生相对位移，保证交汇段新浇混凝土与前一节段混凝土的连接质量。
Method for closure construction of non-stiff framework in triangular area of open-web rigid frame bridge
The invention belongs to the technical field of open-web rigid frame bridge construction, and particularly relates to an open-web rigid frame bridge triangular area stiff-free framework closure construction method. An open-web rigid frame bridge triangular area stiff-free framework closure construction method comprises the steps that before open-web triangular area intersection section box girder intersection section construction, two vertical supporting steel pipe stand columns are arranged between an upper chord box girder and a lower chord box girder of a front pair of girder sections, and the bottom ends of the stand columns are welded to an embedded steel plate on a top plate of the lower chord box girder; and meanwhile, jacking force is applied between the top end of the stand column and the upper chord box girder bottom plate, then a steel cushion block and an adjusting steel plate are additionally plugged in a gap between the top face of the stand column and the box girder bottom plate, the pre-applied jacking force is kept, finally, the hanging basket moves forwards, and intersection section concrete is poured. According to the method, the uprights are mounted between the upper chord and the lower chord of the previous section of beam of the intersection section of the open-web triangular area intersection section box beam, and the jacking force is applied, so that the upper chord box beam and the lower chord box beam are deformed in a coordinated manner, relative displacement is avoided, and the connection quality of newly-poured concrete of the intersection section and concrete of the previous section is ensured.
本发明属于空腹式刚构桥施工技术领域，特别涉及一种空腹式刚构桥三角区无劲性骨架合龙施工方法。一种空腹式刚构桥三角区无劲性骨架合龙施工方法，在空腹三角区交汇段箱梁交汇段施工前，在前一对梁段的上、下弦箱梁之间设置两根竖向支撑钢管立柱，立柱底端焊接在下弦箱梁顶板上的预埋钢板上，同时在立柱顶端与上弦箱梁底板之间施加顶升力，然后在立柱顶面与箱梁底板的空隙之间加塞钢垫块及调节钢板，保持住预加的顶升力，最后挂篮前行，浇筑交汇段混凝土。本发明通过在空腹三角区交汇段箱梁交汇段前一节段梁上、下弦之间安装的立柱和施加顶升力，使上、下弦箱梁之间变形协调，不会发生相对位移，保证交汇段新浇混凝土与前一节段混凝土的连接质量。
Method for closure construction of non-stiff framework in triangular area of open-web rigid frame bridge
一种空腹式刚构桥三角区无劲性骨架合龙施工方法
SUN KEQIANG (Autor:in) / LIU JIANSHE (Autor:in) / CHEN BO (Autor:in)
14.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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