Abstract
China is located between the Pacific Ocean seismic belt and the Eurasian seismic belt where the seismic activity is frequent. Bridge plays a key role in transportation lifeline, but its construction and maintenance face potential seismic hazard in China, which may lead to a huge economic loss. This study investigates the dynamic response of bridge abutment to sand-rubber mixtures backfill under seismic loading conditions by finite element method. Sand-rubber mixtures is composed of waste fibers, rubber particles, sand and water with a certain mixing ratio and dry density It has been used as an anti-seismic backfill material for slopes, retaining walls, bridge structures and other geo-structures. A series of numerical simulations was carried out to evaluate the effectiveness of this new material as backfill material for bridge abutment. The seismic performance of bridge abutment with different backfill materials was analyzed with respect to settlements and accelerations of ground, foundation pile and bridge abutment. The results show that the sand-rubber mixture can be used as backfill material, and has a great potential in reducing the settlements and accelerations of ground and foundation pile.
Highlights
With the rapid economic development, the number of road and bridge construction is increasing recently in China
This paper presents a numerical simulation of dynamic response of bridge abutment to sand-rubber mixture backfill under seismic loading conditions
A three-dimensional model was developed in Midas to study the dynamic response of bridge abutment to sand-rubber mixture backfill
Summary
With the rapid economic development, the number of road and bridge construction is increasing recently in China. Studying the soil-structure interaction under seismic loading conditions has important implications to the development of civil and geotechnical engineering. DYNAMIC RESPONSE OF BRIDGE ABUTMENT TO SAND-RUBBER MIXTURES BACKFILL UNDER SEISMIC LOADING CONDITIONS. The sand-rubber mixture can be used to replace soft soil layer or as a backfill material It leads to the reduction of the upper load for foundation soils, improvement of stability of the foundation, static and seismic performance, and the settlement and displacement of foundation soils. The use of sand-rubber mixture has a huge economic and social benefits and can meet the increasing demand of road building materials for the rapid development of highway construction and other civil infrastructures. This paper presents a numerical simulation of dynamic response of bridge abutment to sand-rubber mixture backfill under seismic loading conditions. Through the comparison among the four backfill materials, the seismic performance of bridge abutment with sand-rubber mixture backfill was investigated
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