基于应变判据一般埋地高压燃气管道抗震计算  

Earthquake-proof Calculation of General Buried High Pressure Gas Pipeline Based on Strain Criterion

作　　者：姜东琪[1] 

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300070

出　　处：《煤气与热力》2016年第6期6-14,共9页Gas & Heat

摘　　要：结合工程案例,阐述高压燃气管道直管段和水平弯管的抗震计算过程。分析水平弯管热胀弯矩的计算,给出文献计算公式变量的单位并补充相应的系数。探讨管道内压、温差、弯管弯曲半径的倍率、管顶覆土厚度、弯管转角、管道与土壤摩擦系数对水平弯管在地震动、内压、温差三者作用下的拉应变、压应变的影响。Combined with an engineering case, the earthquake-proof calculation process of straight pipe section and horizontal elbow of high pressure gas pipeline is expounded. The calculation of heat-expan- sion bending moment of horizontal elbow is analyzed, the units of variables for calculation formula in literature are put forward and corresponding coefficients are added. The influences of pipeline pressure, difference in temperature, magnification of elbow bend radius, thickness of cover soil at pipeline top, turning angle of elbow, friction coefficient between pipeline and soil on tensile strain and compressive strain of horizontal elbow under earthquake, pipeline pressure, difference in temperature are discussed.

关 键 词：管道抗震计算 地震动 水平弯管 热胀弯矩 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]