排水站冰冻破坏原因分析及抗冰冻设计方案研究  

Analysis of the Damage Causes due to Ice and Frost and Design of Drainage-Pumping Station against Ice and Frost

作　　者：李洪升[1] 刘晓洲[1] 石军[2] 翟伟[3] 张更元[2] 

机构地区：[1]大连理工大学工程力学系工业装备结构分析国家重点实验室,辽宁大连116023 [2]沈阳市水利局,辽宁沈阳110013 [3]新民市水利局,辽宁新民112000

出　　处：《冰川冻土》2006年第1期136-140,共5页Journal of Glaciology and Geocryology

基　　金：国家自然科学基金项目(5027801010472020)资助

摘　　要：在寒冷地区建筑的排水站,由于冰冻而造成的破坏影响了工程的使用性能,甚至会使其完全失去作用.针对具体的排水站工程,分析了冰冻破坏的原因,其中的排架柱为静冰压力和冻融循环联合作用引起的破坏;集水池护坡为冻融反复作用的冻融“疲劳”破坏.根据破坏原因分析与计算结果提出抗冰冻破坏的设计方案,对排架柱采用正锥体结构并设防水层,对护坡采用3种不同结构型式,分别是混凝土砌块护坡、混凝土板护坡和对原护坡的改造方案.经计算,3种方案均可以达到抗冻胀破坏的目的.Drainage-pumping stations in cold regions will be damaged by ice and frost, even lose their function completely. The causes of the damage due to ice and frost on a drainage-pumping station are analyzed. Arranged frame columns are destroyed by co-exertion of ice pressure and freezing-thawing cycle. Slope protections of collecting tank are damaged owing to repeated freezing-thawing cycles. These processes were quantitatively calcu：lated. According to the analyses andcalculationS, a design scheme against the ice and frost is put forward. In order to avoid the damage of ice and frost, positive cone and waterproofing layer should be applied to arranged frame columns. Three different configurations of slope protection are put forward, which are demonstrated by numerical calculations, i. e. , concrete-block protection, concrete plate protection and reconstructed revetment.

关 键 词：排水站 冰冻破坏 冰压力 冻胀力 

分 类 号：P642.14[天文地球—工程地质学]