CAJ | 학술논문

在桥梁深水基础钢套箱施工过程中，钢套箱下沉施工是关键环节。针对不同的工程特点和水文、地质条件，需灵活应用多种设备和施工方法。结合厦深客运专线韩江双线特大桥双壁圆形钢套箱下沉施工实例(以345#墩为例)，简要介绍利用铁路舟桥水上高架浮吊等设备快速拼装钢套箱的施工方法，重点阐述利用渣浆泵吸泥和10 t高架浮吊配合0.8 m3液压抓斗和1.5 m3六瓣莲花抓斗抓泥下沉钢套箱的施工方法，以及采取安装管桩导向装置和焊接反牛腿等控制下沉偏位和标高的质量控制技术。围堰施工实际偏位为15～20 cm，标高控制在－20 cm以内，符合承台施工要求。
재교량심수기출강투상시공과정중，강투상하침시공시관건배절。침대불동적공정특점화수문、지질조건，수령활응용다충설비화시공방법。결합하심객운전선한강쌍선특대교쌍벽원형강투상하침시공실례(이345#돈위례)，간요개소이용철로주교수상고가부조등설비쾌속병장강투상적시공방법，중점천술이용사장빙흡니화10 t고가부조배합0.8 m3액압조두화1.5 m3륙판연화조두조니하침강투상적시공방법，이급채취안장관장도향장치화한접반우퇴등공제하침편위화표고적질량공제기술。위언시공실제편위위15～20 cm，표고공제재－20 cm이내，부합승태시공요구。
Steel cofferdam sinking is the key during the deep w ater foundation construction of bridge engineering. Numerous instruments and different construction methods are used according to the specific engineering and its hydrogeological conditions. In this paper,a case study on the construction of Hanjiang Double-line Bridge in Xiameng-Shenzhen passenger transport line was introduced. Take the construction of 345# pier as an example. The overhead crane barge was applied to assemble the steel cofferdam rapidly. Slurry pump,10 t overhead crane barge, 0. 8 m 3 hydraulic grab and 1. 5 m 3 lotus-shaped grab w ere used. Pipe pile guide w as installed and bracket w as w elded to control sinking deviation and elevation. During the steel cofferdam construction,the actual deviation was 15 to 20 cm,and the elevation was within -20 cm,both of which meet the requirement of bearing platform construction.