Seasonal Temperature Load Of Integral Abutment Bridges, Soil Pressure

Integral-Abutment bridges are popular in foreign countries. TO drive theconstrUctions of Integral-Abutmeni bridges in China, this edicle takes effOrts toresearch the lateral earth pressures behide the Iniegral-AbatmeIlt under circulartemperatllIe loads. It brings ollt a FEM model to calculate lateral earth pressures behidethe Integral-Abutment with considering the inieraction of eallh and abdrient. Aimingat the two inherent behavioral deficiencies inherent in all IABs' Summer lateral earth.pressure increases after each temperature cycle; and the settlement adjacent to each abutmentdevelops after each temperatllre cyc1e, this article brings out tWo method to solve or relievethe above tWo problems. One is using geosynthetic tensile reinforcement (geogrid,geoteXtileor metallic elements) to build a mechanicalIy stabilized earth within the soil, the other is.using a wedge-shaped mass of EPS-blockgeofoam.The efficiency of this tWo mathod iseva1uated by FEM analysis.Also in this article, the influence of several design factors to the lateral earth pressures isexamined. They include the frictional coefficient betWeen soil and abutment. the selected1leigl1t of tl1e abut1ncnt. various soil typcs various 1atera1 displacement of structure and theeffect of loads above the soil and so on. The author hope it will present some theoreticalreference to the design of Illtegral-Abulmeni bridges.