CAJ | 학술논문

根据防洪度汛要求，2011年5月底锦屏二级水电站拦河闸坝必须具备过流条件，弧形闸门施工工期紧张，鉴于传统安装程序受混凝土等强的限制，经论证后采用“先安装后锚索张拉”的弧形闸门安装技术，即：先进行弧形闸门安装，后进行预应力锚索张拉。该方案的关键是：锚索张拉后，闸墩锚固块变形是否满足工程需求及变形的调整问题。通过对预应力锚索张拉后闸墩变形进行数值计算分析，得到锚固块平行主锚索张拉方向和垂直闸墩方向的最大变形分别为2．9和3．0mm，该变形产生的影响可利用铰座的结构设计特点消除。施工中监测得到相应方向的最大变形分别为2．35和2．87 mm ，与计算值基本符合，证明该方案具有较强的可操作性，可为类似工程闸门的安装提供参考。
근거방홍도신요구，2011년5월저금병이급수전참란하갑패필수구비과류조건，호형갑문시공공기긴장，감우전통안장정서수혼응토등강적한제，경론증후채용“선안장후묘색장랍”적호형갑문안장기술，즉：선진행호형갑문안장，후진행예응력묘색장랍。해방안적관건시：묘색장랍후，갑돈묘고괴변형시부만족공정수구급변형적조정문제。통과대예응력묘색장랍후갑돈변형진행수치계산분석，득도묘고괴평행주묘색장랍방향화수직갑돈방향적최대변형분별위2．9화3．0mm，해변형산생적영향가이용교좌적결구설계특점소제。시공중감측득도상응방향적최대변형분별위2．35화2．87 mm ，여계산치기본부합，증명해방안구유교강적가조작성，가위유사공정갑문적안장제공삼고。
According to the requirements of flood control ,Jinping―II Hydropower Station project sluice must have the flow conditions before the end of May 2011 .The construction period of radial gate is tight .In addition ,traditional installation program is bound by e‐qual strength concrete restrictions .After a careful argument ,we decided to use the technology -“installed before the anchor cable stretch―draw” ,which is the radial gate installed before the pre―stressed anchor cable stretch―draw .The key problem is whether the deformation of anchorage block after anchor cable stretch―draw meets the engineering requirements and adjustment of the deforma‐tion ..The calculation results show that the deformations of parallel to the direction of main anchor cable stretch―draw and perpendic‐ular to the direction of the pier are 2 .9 and 3 .0 mm .The impact of the deformation can be eliminated by using the structure and de‐sign features of hinged support .The corresponding deformations monitored in construction are 2 .35 and 2 .87 mm ,which are in line with the calculated value .It turns out that the method has strong operability and serves as a reference for the installation of similar engineering gates .