CAJ | 학술논문

为了解悬索桥锌－铝合金镀层钢丝主缆索夹的抗滑性能，以37－91φ5．2悬索桥主缆为模型，进行索夹抗滑试验。用千斤顶顶推力模拟实桥索夹的下滑力，通过实测索夹发生滑移时的相关参数，计算得到锌－铝合金镀层钢丝主缆索夹的抗滑摩阻系数及索夹内、外空隙率。试验结果表明：锌－铝合金镀层钢丝的抗滑摩阻系数为0．305，此时索夹内、外空隙率分别为17．4％和19．6％；试验得到的抗滑摩阻系数相对设计规范取值储备量较大，建议后期桥梁设计中按0．20取值，在同等设计条件下，索夹设计长度可缩短30％，既可减轻索夹重量又可降低施工难度。
위료해현색교자－려합금도층강사주람색협적항활성능，이37－91φ5．2현색교주람위모형，진행색협항활시험。용천근정정추력모의실교색협적하활력，통과실측색협발생활이시적상관삼수，계산득도자－려합금도층강사주람색협적항활마조계수급색협내、외공극솔。시험결과표명：자－려합금도층강사적항활마조계수위0．305，차시색협내、외공극솔분별위17．4％화19．6％；시험득도적항활마조계수상대설계규범취치저비량교대，건의후기교량설계중안0．20취치，재동등설계조건하，색협설계장도가축단30％，기가감경색협중량우가강저시공난도。
To examine the anti‐sliding performance of cable clamps for suspension bridge main cables made up of zinc‐aluminum alloy coated steel wires ,the suspension bridge main cables of 37‐91φ5 .2 are cited as models to carry out anti‐sliding tests for cable clamps .The jacking and pushing force of jacks is used to simulate the downward sliding force of real bridge cable clamps ,by using the parameters measured during the sliding of cable clamps ,the anti‐sliding friction coefficient of the cable clamps of main cables made up of zinc‐aluminum alloy coated steel wires ,the porosity in‐side and outside of the cable clamps are calculated .The results of the test demonstrate that the friction coefficient of the zinc‐aluminum alloy coated steel wire is 0 .305 ,at this moment ,the po‐rosity inside and outside the cable clamps are 17 .4% and 19 .6% .The anti‐sliding friction coeffi‐cient gained in the test has greater reserve amount than the value prescribed in the design code ,and a value of 0 .20 is suggested for the future bridge design .Under the same design circumstance ,the design length of cable clamps can be reduced by 30% ,by this way ,the weight of the cable clamps can be reduced and the complexity of construction can also be decreased .