Mockup Erection Test at the Tower Saddle and Anchor Span
Cable erection problems were expected to occur at the pylon saddle and the splay band due to self-anchored cable system and the difference between erection and completed layout of the main cable. The mock-up tests were performed prior to actual cable erection.

Through the tests, cable erection problems at the saddle, lateral displacement and bending of the wires inside the saddle, were identified and the measures to deal with the problems were devised and tested.

During cable erection, some of the wires at the splay band was expected to show lateral displacement and/or lift phenomena because of high flare angles at the splay band. These displacements of the wires disturbed the arrangement of wires at the splay band. Mockup cable erection tests at the anchorage were also carried out to find degree of displacements of wires and appropriate measures to deal with these problems. Through the test, the methods to arrange wires at the splay bands were devised and tried.

모형시험전경 Mock-up Test
편쏠림현상
Lateral Displacement
와이어 포머 및 형상유지용 밴드 Wire-former and Shape-keeping Band