CAJ | 학술논문

大岗山水电站的高拱坝深孔闸墩预应力锚固设计技术性强且质量要求高，锚索布置、锚索预应力体系和预应力损失确定是设计中的重点和难点。目前预应力锚索设计多在工程经验基础上采用半经验方式进行，系统、详细地介绍了大岗山水电站深孔闸墩U形有粘结预应力锚索设计思路，对有粘结锚索的拉锚系数和预应力长期损失系数的取值进行了讨论，指出设计中除了要重点关注悬臂闸墩根部和支铰大梁的拉应力外，还应特别关注锚头部位的压应力集中现象。
대강산수전참적고공패심공갑돈예응력묘고설계기술성강차질량요구고，묘색포치、묘색예응력체계화예응력손실학정시설계중적중점화난점。목전예응력묘색설계다재공정경험기출상채용반경험방식진행，계통、상세지개소료대강산수전참심공갑돈U형유점결예응력묘색설계사로，대유점결묘색적랍묘계수화예응력장기손실계수적취치진행료토론，지출설계중제료요중점관주현비갑돈근부화지교대량적랍응력외，환응특별관주묘두부위적압응력집중현상。
The pre-stressed anchorage design of gate pier for deep outlet of Dagangshan high arch dam is characterized as high technical and quality requirements, its difficulties are embodied in anchorage cable layout, pre-stressed cable system as well as determination of pre-stress loss. At present, the semiempirical method was adopted in design of pre-stressed anchorage cable based on engineering experiences. We present the design ideas of U shape pre-stressed bonded anchorage cable of gate pier for deep outlet of Dagangshan Arch Dam and further discuss the determination of pull-anchorage coefficient and long term pre-stress loss coefficient in detail and systematically. It is pointed out that engineers' attention should be paid to compression concentration on anchor head and tension stress at cantilever-pier root and hinge girder.