Methods for Stress Analysis and Slab Thickness Design of Long-Life Concrete Pavement in consideration of Differential Settlement

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14292
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Hiroshima University
• Principal Investigator: Sato Ryoichi 広島大学, 工学研究科, 名誉教授 (20016702)
• Co-Investigator(Kenkyū-buntansha): 小川 由布子 広島大学, 工学研究科, 助教 (30624564)
• Research Collaborator: KAMETA Shoichi ; YOSHIMOTO Toru
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 不同沈下 / 連続鉄筋コンクリート舗装 / クリープ / 変位適合条件 / せん断伝達

Outline of Final Research Achievements

In order to help establish design method of slab thickness of long-life continuously reinforced concrete (CRC) pavement with a gap under the slab due to differential settlement, judging method for contact of CRC slab with asphalt intermediate layer (layer) and that for the segregation between both as well as the gap model, creep effect on self-weight induced stress of the CRC slab, shear transfer model of the transverse crack based on aggregate interlock are investigated.
Results show that judging method of the contact of the slab with the layer and the gap model are appropriate, the creep effect on the self-weight induced stress is clearly observed at the beginning of the contact, and the shear transfer model consisting of shear strain defined as faulting/crack width at the beginning of the aggregate interlock as well as shear stiffness after that is effective in evaluate stresses on loading and non-loading sides adjacent to the transverse crack.

Free Research Field

コンクリート工学