CAJ | 학술논문

钢顶管是给水工程中广泛使用的非开挖技术，其在施工过程中通常要面临高地下水压力环境，一旦接头密封失效泄漏，则可能导致周围水土进入管内，引起地层流失和沉降。为了研究高水压条件下曲线钢顶管施工采用的接头橡胶密封圈密封性，采用室内密封性试验系统直接测试管节密封性能，并通过 ABAQUS 有限元软件模拟不同管节偏角条件下橡胶密封圈接触压力。结果表明：采用的两道鹰嘴形橡胶圈可以满足现场施工0.3 MPa 压力的密封要求，橡胶圈的接触压力和接触长度随管节偏角增大而减小。
강정관시급수공정중엄범사용적비개알기술，기재시공과정중통상요면림고지하수압력배경，일단접두밀봉실효설루，칙가능도치주위수토진입관내，인기지층류실화침강。위료연구고수압조건하곡선강정관시공채용적접두상효밀봉권밀봉성，채용실내밀봉성시험계통직접측시관절밀봉성능，병통과 ABAQUS 유한원연건모의불동관절편각조건하상효밀봉권접촉압력。결과표명：채용적량도응취형상효권가이만족현장시공0.3 MPa 압력적밀봉요구，상효권적접촉압력화접촉장도수관절편각증대이감소。
Faced with high groundwater pressure condition during practical construction gener-ally,the steel pipe jacking is a widely applied trenchless technology on water supply engineering. Once there was failure and leakage of pipe joint sealing structure,the surrounding water and soil might rush into the pipes and induce formation erosion and settlement.In order to study the sealing property of pipe joint rubber seal used in curved steel pipe jacking construction,a laboratory sealing test system was used to test pipe joint sealing.In addition,the contact pressure of rubber seal was simulated by ABAQUS finite element software under different pipe joint deflection angle condi-tions.The results showed that two olecranon rubber rings adopted on construction could satisfy the sealing requirement of 0.3 MPa pressure;the contact pressure and contact length of rubber ring would decrease with pipe joint deflection angle.