Riverbed Lifting Effects on Bridge Structures Caused by Heavy Rainfall

TL;DRAbstract

Most rivers in Taiwan are rapid and rushing due to steep slopes. Moreover, Taiwan is located in an area frequently stricken by typhoons during summer. In the aftermath of the ChiChi earthquake (7.3 on Richter scale) on September 21, 1999, the geological structure of the hillside fields, especially in central Taiwan, has become more fragile. Mudflows and landslides which give rise to the deposit of massive soils and rocks on the riverbed (e.g., riverbed of DaJia River) frequently occurred due to heavy rainfalls in the rainy and typhoon seasons. Those circumstances caused gradual lifting of the riverbed. Lifting of the riverbed decreases water capacity of the streamway and further increases the possibilities of flash-floods during heavy rainfalls and typhoons. Route Tai No. 8, located in just such a special area, is one of the major highways that connects the western and eastern parts of Taiwan. As Tai No. 8 Highway is constructed along the DaJia valley, it is highly influenced by the hy

Chat with Paper

AI Agents for this Paper