Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mounting method of prefabricated segmental box girder without wet joint
The invention provides a method for installing a prefabricated segmental box girder without a wet joint. The method comprises the following steps: mounting a temporary support; hoisting a No.0 beam or the last section of beam; continuously hoisting other beams in sequence or in an inverted sequence until the rest of three sections of beams; hoisting a section of beam at the most end part, hoisting the rest of two sections of beams, gradually gluing the beams in sequence, hoisting the section of beam at the most end part to the midspan and then gluing the section of beam at the most end part with an adjacent beam, and tensioning a prestressing tendon of the whole span. The temporary prestressing tendons are removed; the actual line shape is measured; after the linear adjustment is accurate, a temporary support is installed at the bottom of the beam at the other end, a suspension suspender between the beam and a main truss of the bridge girder erection machine is dismantled from pier columns on the two sides from the midspan, a permanent support is installed, and beam installation is completed. Wet joints are eliminated, the time is saved from 10 days to 7 days for each cycle, the work efficiency is improved by 30%, and great significance is achieved for the progress of the bridge construction technology. Cast-in-place concrete is reduced, and environmental pollution caused by grout leakage and aggregate scattering is avoided.
本发明提供了一种无湿接缝的预制节段箱梁安装方法，步骤如下：安装临时支座→吊装0号梁或最后一段梁→继续按顺序或倒序吊装其他梁直至剩余三段梁→吊装最端部一段梁→吊装剩余两段梁→按序对梁逐步胶接→最端部一段梁向跨中吊运后与相邻梁胶接→张拉整跨预应力束，解除临时预应力束→测量实际线形；→与理论线形进行对比，确定线形调整方向后进行调整→线形调整准确后，在另一端梁底部安装临时支座→从跨中向两侧墩柱拆除梁与架桥机主桁之间的悬挂吊杆→安装永久支座，完成梁安装。取消湿接缝每个循环节约时间由10天，提高的7天，工效提高30%，对于桥梁施工技术进步的意义重大；减少了现浇混凝土，避免浆液渗漏、骨料洒落造成的环境污染。
Mounting method of prefabricated segmental box girder without wet joint
The invention provides a method for installing a prefabricated segmental box girder without a wet joint. The method comprises the following steps: mounting a temporary support; hoisting a No.0 beam or the last section of beam; continuously hoisting other beams in sequence or in an inverted sequence until the rest of three sections of beams; hoisting a section of beam at the most end part, hoisting the rest of two sections of beams, gradually gluing the beams in sequence, hoisting the section of beam at the most end part to the midspan and then gluing the section of beam at the most end part with an adjacent beam, and tensioning a prestressing tendon of the whole span. The temporary prestressing tendons are removed; the actual line shape is measured; after the linear adjustment is accurate, a temporary support is installed at the bottom of the beam at the other end, a suspension suspender between the beam and a main truss of the bridge girder erection machine is dismantled from pier columns on the two sides from the midspan, a permanent support is installed, and beam installation is completed. Wet joints are eliminated, the time is saved from 10 days to 7 days for each cycle, the work efficiency is improved by 30%, and great significance is achieved for the progress of the bridge construction technology. Cast-in-place concrete is reduced, and environmental pollution caused by grout leakage and aggregate scattering is avoided.
本发明提供了一种无湿接缝的预制节段箱梁安装方法，步骤如下：安装临时支座→吊装0号梁或最后一段梁→继续按顺序或倒序吊装其他梁直至剩余三段梁→吊装最端部一段梁→吊装剩余两段梁→按序对梁逐步胶接→最端部一段梁向跨中吊运后与相邻梁胶接→张拉整跨预应力束，解除临时预应力束→测量实际线形；→与理论线形进行对比，确定线形调整方向后进行调整→线形调整准确后，在另一端梁底部安装临时支座→从跨中向两侧墩柱拆除梁与架桥机主桁之间的悬挂吊杆→安装永久支座，完成梁安装。取消湿接缝每个循环节约时间由10天，提高的7天，工效提高30%，对于桥梁施工技术进步的意义重大；减少了现浇混凝土，避免浆液渗漏、骨料洒落造成的环境污染。
Mounting method of prefabricated segmental box girder without wet joint
一种无湿接缝的预制节段箱梁安装方法
OUYANG SHAN (Autor:in) / AI GUOQING (Autor:in) / SHEN DAWEI (Autor:in) / DING YAHUI (Autor:in) / ZHANG MINGSHAN (Autor:in) / LI BING (Autor:in) / SUN TAOTAO (Autor:in)
07.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
/
B66F
HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
,
Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last
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