乌鲁木齐奥体中心体育场钢结构施工技术研究
Research on Steel Construction Technology for the Urumqi Olympic Sports Center Stadium
乌鲁木齐奥体中心体育场屋盖钢结构采用大开口索承网格结构体系,作为一种刚柔结合体系,施工中存在较多技术难点。本文通过对钢结构和索网结构的研究和实践,提出了屋盖网格面模块化吊装和单点式分块支撑施工技术,减少了高空作业,优化了支撑措施用量;提出了大体量轮辐式索承网格预应力索系有障碍整体提升技术,避免了大体量索体拼装胎架的搭设,加快了施工工期;研发了一种有障碍倾斜钢结构分块安装方法,提高了幕墙结构安装效率;提出了大悬挑索承网格结构张拉后卸载施工技术,加快了张拉效率,节省了张拉成本。以上技术可为今后类似工程提供借鉴和参考。
The Urumqi Olympic Sports Center Stadium adopts a large-opening spoke-wheel type cable-supported grid structure. As a rigid-flexible combined system, there are many technical difficulties during construction. Through targeted research and practice on the steel structure and cable network, a modular hoisting and single point block support construction technology for the roof grid surface was proposed, which reduces high-altitude operations and optimizes the number of supports used. An overall lifting technology for large-scale spoke-wheel type cable-supported grid prestressed cable systems with obstacles was introduced, which avoids the installation of large cable assembly frames and shortens the construction period. A block installation method for inclined steel structures with obstacles was developed, which improves the efficiency of curtain wall structure installation. Finally, a post-tensioning unloading construction technique for large cantilever cable-supported grid structures was proposed, which improves the tensioning efficiency and saves the cost. The above technologies can provide reference and guidance for similar projects in the future.
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