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孔江洪，趙莉華，崔 青
（中國建筑設(shè)計研究院，北京100044）[摘要] 項目主體站房為地下建筑，洪水來臨時，主體站房將沒于水中，站房自重遠小于所受的水浮力，整體抗浮不足。經(jīng)過對大直徑錨樁(300x300)三種方案的經(jīng)濟性比較，最終決定采用錨桿。經(jīng)過計算，錨桿的數(shù)量較多，主要是洪水因素造成的。而事實上很多對結(jié)構(gòu)抗浮有利的因素都沒有考慮，如內(nèi)含大面積水位穩(wěn)定的蓄冰槽，基底位于完整巖體上，透水性小等。最后決定采用考慮有利因素作用的方法進行抗浮計算，大大減少了錨桿的數(shù)量，降低了工程造價。另外站房在水中承受很大的水壓力，在控制裂縫及設(shè)置后澆帶方面也選擇了經(jīng)濟合理的方法。
[關(guān)鍵詞] 抗??；錨桿；錨樁；巖石；水頭；折減系數(shù)Structure design of Chongqing River North City's Energy Station
Kong Jianghong, Zhao Lihua, Cui Qing
(China Architecture Design & Research Group, Beijing 100044, China)Abstract: Chongqing River North City's Energy Station is an underground building, and flood will submerge it. The self weight is'greatly less than buoyancy. Tecbniques should be taken to resist buoyancy. Anchor poles method is chosen by compared with big diameter piles and small diameter piles. After calculation, the amount of anchor poles is large, which is caused by flood. In fact, many beneficial factors are not considered, for example, a big pool with water in, foundation placed on intact rock without any water between them. At last including beneficial factors in, a new calculation was made, the amount of anchor poles decreased a lot, and the cost was saved. More over water pressure imposed on the building is great, so economical and suitable methods are taken to control crevice width and to layout later concrete filled zone.
Keywords: buoyancy resistant; anchor pole; pile; rock; water head; decrease factor
