高屏溪斜張橋連續壁基礎施工

Diaphragm Wall Foundation of Kao-Ping-Hsi Cable Stayed Bridge

凌凱(Kai Ling)

《地工技術》 72期 (1999/04) Pp. 55-66

https://doi.org/10.30140/SG.199904.0006

摘要

南二高高屏溪河川橋全長2.6公里，分為斜張橋、懸臂工法、支撐先進工法三種工法施工，基礎部份除A1及P1（斜張橋之橋台及橋塔）為連續壁外，其餘均為1.5Mψ全套管基樁，橋塔基礎於河床地砂礫石土層上施工，本身構造又是隔牆箱壁式，連續壁轉角特別多，施工上是一大考驗，橋樑工程以連續壁作基礎，本橋為國內第一座。本文就地質、開挖機具、穩定液、單元分割及刀法、開挖壁體防坍措施、鋼筋加工組立及吊放、混凝土澆注、壁底灌漿、完整性試驗、導溝舖面傾斜及下沉之對策等提出報告。

關鍵字

斜張橋 ； 橋塔 ； 連續壁基礎

並列摘要

The total length of Kao-Ping-Hsi Bridge is 2.6 kilometers, Which was divided into three construction methods, namely cable stayed, free cantilever and advanced shoring. Besides, the foundations of A1 and P1(abutment and pylon of cable stayed bridge), are diaphragm walls, and other foundations are 1.5m ψ concrete piles cast-in-place with full casing. The foundation of pylon sits on gravel and sand layer of river banks. Because it is in shape of box, there are many corners. What has been mentioned before causes collapses of diaphragm walls. This bridge is the first one with diaphragm walls as foundations in Taiwan.This article is divided into sections such as geology, excavation equipment, stabilizing solution, unit division and cutting methods, collapse control, the assembling and placing of reinforced cages, underwater concrete pouring, bottom grouting of diaphragm wall, supersonic test of diaphragm wall, counter measure in inclination and sinking of pavement.

並列關鍵字

cable stayed bridge ； pylon ； diaphragm wall