沉井方案技术标.docx

一、声光塔液压装置（HPU）概况HPU summary 声光塔位置：灯塔建筑219，用于在表演时升起照射舞台，平时则暗藏在灯塔建筑中。塔的建筑形式见于建筑图纸：1A-311Acoustooptic tower position: lantern tower of 219 is used to flash the stage when performing, and hided from the lantern tower at other times. The building types of tower is shown on the construction drawing of 1A-311. 灯塔3# light tower 3# 灯塔4# lantern tower4#声光塔由不锈钢内胆和200毫米厚的钢筋混凝土外壳组成，地下层标高为从-3.240米，管底标高为：-17.04米。钢管材质为00Cr17Ni14Mo2(00Cr17Ni14Mo2(316L))不锈钢，内径为1240毫米，壁厚20毫米（以上信息详见于2S-502号图纸及建筑图纸）：Acoustooptic tower consist of stainless steel and 200mm steel concrete, and the EL of subsurface layer is -3.240m and the EL of tube bottom is -17.04m.The steel tube texture is stainless steel of 00Cr17Ni14Mo2(00Cr17Ni14Mo2(316L)), and its internal diameter is 1240mm, the pipe thickness is 20mm.(See details in the drawing of 2s-502 and construction drawing).二、技术方案分析 Analysis of technical solutions1、根据工程条件，采用明挖方法势必暴露出已经打好的工程桩，且开挖范围大，基坑很狭小，不宜采用；1. According to the construction conditions, ways of open excavation will make the pipe exposed. The range of excavation is big and foundation ditch is too narrow to use the way of open excavation.2、若采用泥浆护壁就地灌注空心桩方法，则面临不锈钢管在混凝土和泥浆浮力下定位困难的问题。现浇混凝土的问题在于：—旦比重较大混凝土浮力下移位，将无法纠正，而混凝土在不断地凝固，从而导致整个组件报废。If?we?use?the?mud?to grout?hollow?pile on the site, stainless?steel?will?be?difficult?to?locate?because?of?concrete?and?mud buoyancy. The problem of concrete casting-in-place as below: once a larger proportion of concrete buoyancy is shifting, it cannot be corrected, and the concrete is solidified in constantly, which leads to the entire discarding.3、经过讨论，岩土工程师提供的建议：场外预制，工地吊装，灌浆固定的技术路线，较为合理。3. Advice provided by geotechnical engineer is to prefabricate off the site and hoist on the site, and grout the technical route fixed, which is reasonable after discussion. 4、预制件吊装的技术路线应解决的问题有：4. Problems for solving by the technical route of preformed unit :大型不锈钢焊接件--转运--包覆混凝土--养护后转运Large stainless steel weldment - transhipment- concrete coating- transhipment after curing就地干