为解决反复开挖道路铺设多种管线造成交通拥堵且耗费大量建设成本的难题，提出侧壁出筋叠合板式拼装综合管廊，该管廊具有吊装方便、现场支模少、节点连接可靠、整体性和防水性好等优点。基于ABAQUS大型商用软件，建立水平荷载作用下侧壁出筋叠合板式拼装综合管廊有限元分析模型。为验证该模型的合理性，开展侧壁出筋叠合板式拼装综合管廊中节点试验，试验结果与有限元分析结果吻合良好。在此基础上，进一步开展叠合板式拼装综合管廊双舱整体结构足尺模型的有限元参数分析，分析参数包括腋角高度和轴压比。分析结果表明： 1）双舱整体结构的破坏形态均为弯曲破坏。2）所有试件的峰值承载力在200.5~298.6 kN，层间位移角在1/43~1/27。3）相比于无腋角试件，当腋角高度分别为150 mm和250 mm时，有腋试件的峰值承载力分别提高24.4%和39.7%，峰值侧移分别增加49.3%和60.1%； 当轴压比从0增加到0.05、0.10时，有腋试件的峰值承载力分别提升10.3%、19.7%，但峰值侧移分别降低5.2%、18.6%。总体上，侧壁出筋叠合板式拼装综合管廊双舱整体结构具有较大的承载力和较好的变形能力。
Multiple road excavations in tunnels for pipeline laying cause traffic congestion and high costs. To address this challenge, a hybrid precast utility tunnel (HPUT) composed of composite slabs using reinforcement connection is proposed, characterized by ease of lifting, reduced on-site casting, reliable connections, good integrity and waterproof performance. Based on ABAQUS software, a finite element (FE) analysis model of the HPUT under horizontal loading is established. To verify the rationality of this model, a middle connection test is conducted on the HPUT, and the results show good agreement with the FE analysis. On this basis, a further FE analysis of the overall structure of the HPUT is conducted, primarily focusing on haunch height and axial compression ratio. The results demonstrate the following: (1) The failure mode of the overall structure is bending failure. (2) The peak capacity of specimens ranges from 200.5 to 298.6 kN, and the inter-story drift angles range from 1/43 to 1/27. (3) Compared with specimens without haunches, specimens with haunch heights of 150 mm and 250 mm show increases in peak bearing capacity by 24.4% and 39.7%, respectively, and increases in peak displacement by 49.3% and 60.1%, respectively; When the axial compression ratio increases from 0 to 0.05 and 0.10, the bearing capacity of the HPUT increases by 10.3% and 19.7%, respectively, while the peak displacement decreases by 5.2% and 18.6%, respectively. It is concluded that the overall structure of the HPUT exhibits substantial bearing capacity and commendable deformation capacity.
