預應力混凝土箱梁整體一次澆注施工工藝
預應力混凝土箱梁整體一次澆注施工工藝
摘要：為提高橋梁施工質(zhì)量，橋梁施工中新材料、新工藝、新技術(shù)層出不窮，而作為城市交通工程重要組成部分，橋梁工程的建設規(guī)模越來越大，對橋梁的整體性要求越來越高。常規(guī)混凝土箱梁現(xiàn)場分次澆筑施工技術(shù)目前已非常成熟，但由于分次澆筑存在著施工縫的處理，對箱型預應力混凝土箱梁的整體性有一定的影響。本文作者依托西禹高速高架橋工程，通過預先設計、安裝預應力箱梁內(nèi)箱的方法，調(diào)整施工工藝，嚴格施工過程質(zhì)量控制，確保了預應力混凝土箱梁整體一次澆筑施工。該項目通過橋梁荷載試驗，各項指標均能滿足設計和規(guī)范要求，為城市橋梁中預應力混凝土箱梁現(xiàn)場整體一次澆筑施工奠定了基礎，該施工工藝可作為市政橋梁建設者同行們參考。
關鍵詞：預應力；箱梁；一次澆筑
Abstract: in order to improve the quality of bridge construction, the new bridge construction materials, new technology, and new technology emerge in endlessly, and city traffic engineering as an important part of the construction of the bridge engineering scale is more and more big, the integrity of the bridge to demand more and more. Conventional concrete box bridge the divide second casting construction technology have been very mature, but because there are times casting of construction joints of processing, a box of prestressed concrete box girders of integrity to a certain extent. In this paper the authors rely on west yu high-speed viaduct project, through the advance design, installation in the method of prestressed girder box, adjust construction craft, strict construction quality control process, to ensure that the prestressed concrete box girder casting a whole construction. The project through the bridge load test, and all the indexes can meet the design and standard requirement, for city Bridges in prestressed concrete girders site overall a casting laid the foundation construction, the construction technology can be used as municipal bridge builder colleagues reference.
Keywords: prestressed; Box girder; A casting
前言
城市建設在不斷發(fā)展，市政工程在城市道路建設中也需要不斷的加快其速度，提高其施工質(zhì)量，橋梁在施工過程中出現(xiàn)了很多的施工工藝，但是應根據(jù)環(huán)境的不同，季節(jié)的不同，選擇不同的方法來提高橋梁工程中現(xiàn)澆混凝土梁的質(zhì)量、安全及工期。本工藝主要針對橋梁工程施工中，現(xiàn)澆箱梁混凝土澆筑方法來保證混凝土在施工中的質(zhì)量及橋梁結(jié)構(gòu)的整體性。
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