Design and field test of a novel integral noise barrier for rail transit

In this paper, a novel integral noise barrier (INB) for rail transit was put forward. It brought steel fiber reinforced cementitious composite (SFRCC) and basalt fiber reinforced plastic (BFRP) into the construction of noise barrier. Compared with traditional noise barrier, INB demonstrates many advantages such as integrity, less extra noise, good durability and convenient construction. The protruding platform for overhead contact system (OCS) can be cancelled because of its rational design. Based on the engineering demand for eastern extension project of the No.2 subway line of Nanjing, two specimens were cast and field test was carried out. The results show that two specimens did not crack under the design load, the lateral displacement on the top of INB is less than H/250. INB can meet the design requirements. The conclusions can provide valuable preference for the use of SFRCC and BFRP in noise barrier.