A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for erecting small-radius bridge precast beam in mountain ridge area
The invention provides a construction method for erecting a small-radius bridge precast beam in a mountain ridge area. The construction method comprises the steps of bridge girder erection machine assembly, bent cap widening, bridge girder erection machine hole passing, bridge deck beam transporting and beam lifting and erecting. Guide beams of an existing bridge girder erection machine are generally connected with a middle supporting leg assembly through bolts, during construction, the connecting bolts between the guide beams and the middle supporting leg assembly can be slightly loosened, differential advancing of the two guide beams can be controlled through a guide beam longitudinal moving motor, a tiny included angle can be formed between the guide beams and the middle supporting leg assembly, and therefore the rotation angle alpha of the guide beams can be adjusted; therefore, the tail end of the guide beam is stably supported, and the guide beam can be suitable for erecting small-radius large-cross-slope bridge precast beams on road sections such as second-level and third-level roads or high-level road interchange ramps in mountains and heavy hills, and is suitable for erecting bridge precast beams with limited bridgehead sites and high operation difficulty of bridge girder erection machine assembly. The construction method can adopt a bridge girder erection machine with an existing structure on the market for construction, and the bridge girder erection machine does not need to be purchased or transformed again.
本发明提供一种山岭地区架设小半径桥预制梁的施工方法，包括架桥机拼装、盖梁加宽、架桥机过孔、桥面运梁及提梁架设的步骤。现有架桥机的导梁与中支腿组件之间通常采用螺栓连接，施工时，可略微松开导梁与中支腿组件之间的连接螺栓，通过导梁纵移电机控制两导梁的差速前进，使得导梁与中支腿组件可形成微小夹角，从而对导梁的自身转角α进行调整，使导梁的尾端得到稳定的支撑，可适用于山岭重丘地区二、三级公路或高等级公路互通匝道等路段的小半径大横坡桥预制梁架设，适用于桥头场地有限，拼装架桥机作业难度大的桥预制梁架设，且该施工方法可采用市面上现有结构的架桥机进行施工，无需重新购或改造架桥机。
Construction method for erecting small-radius bridge precast beam in mountain ridge area
The invention provides a construction method for erecting a small-radius bridge precast beam in a mountain ridge area. The construction method comprises the steps of bridge girder erection machine assembly, bent cap widening, bridge girder erection machine hole passing, bridge deck beam transporting and beam lifting and erecting. Guide beams of an existing bridge girder erection machine are generally connected with a middle supporting leg assembly through bolts, during construction, the connecting bolts between the guide beams and the middle supporting leg assembly can be slightly loosened, differential advancing of the two guide beams can be controlled through a guide beam longitudinal moving motor, a tiny included angle can be formed between the guide beams and the middle supporting leg assembly, and therefore the rotation angle alpha of the guide beams can be adjusted; therefore, the tail end of the guide beam is stably supported, and the guide beam can be suitable for erecting small-radius large-cross-slope bridge precast beams on road sections such as second-level and third-level roads or high-level road interchange ramps in mountains and heavy hills, and is suitable for erecting bridge precast beams with limited bridgehead sites and high operation difficulty of bridge girder erection machine assembly. The construction method can adopt a bridge girder erection machine with an existing structure on the market for construction, and the bridge girder erection machine does not need to be purchased or transformed again.
本发明提供一种山岭地区架设小半径桥预制梁的施工方法，包括架桥机拼装、盖梁加宽、架桥机过孔、桥面运梁及提梁架设的步骤。现有架桥机的导梁与中支腿组件之间通常采用螺栓连接，施工时，可略微松开导梁与中支腿组件之间的连接螺栓，通过导梁纵移电机控制两导梁的差速前进，使得导梁与中支腿组件可形成微小夹角，从而对导梁的自身转角α进行调整，使导梁的尾端得到稳定的支撑，可适用于山岭重丘地区二、三级公路或高等级公路互通匝道等路段的小半径大横坡桥预制梁架设，适用于桥头场地有限，拼装架桥机作业难度大的桥预制梁架设，且该施工方法可采用市面上现有结构的架桥机进行施工，无需重新购或改造架桥机。
Construction method for erecting small-radius bridge precast beam in mountain ridge area
一种山岭地区架设小半径桥预制梁的施工方法
WANG ZHENQI (author) / WEI HUA (author) / HUANG YESHENG (author) / ZHOU JIAN (author) / ZHOU YULIAN (author) / LAN GUOFEN (author) / WANG CHUJIE (author) / CAO YANG (author) / ZOU MU'EN (author)
2023-07-14
Patent
Electronic Resource
Chinese
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