【摘要】 广州丫髻沙大桥主桥为 (76 + 36 0 + 76 )m中承式钢管混凝土拱桥 ,拱肋由 6×75 0mm钢管组成 ,管内C6 0混凝土采用输送泵压注。介绍了压注混凝土过程的安全稳定、施工工艺、主拱肋的线形控制更多还原

【Abstract】 The arch ribs of Yajisha major bridge are composed of 6  750 mm steel tubes in which C60 concrete are cast in pressure with concrete pumps. The methods used to ensure safety and stability and to control the alinement of the main arches, as well as the construction technology are introduced.更多还原