Experimental Analysis of Deformation of Large Diameter Steel Pipejacking  with Socket and Spigot Joint: A Case Study of Rehabilitation Project of Water Supply Pipelines on Gaoji Seawall in Xiamen

doi:10.3973/j.issn.1672-741X.2017.05.009

Tunnel Construction ›› 2017, Vol. 37 ›› Issue (5): 578-585.DOI: 10.3973/j.issn.1672-741X.2017.05.009

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Experimental Analysis of Deformation of Large Diameter Steel Pipejacking  with Socket and Spigot Joint: A Case Study of Rehabilitation Project of Water Supply Pipelines on Gaoji Seawall in Xiamen

ZHEN Liang¹, CHEN Jinjian^{1, 2}, WANG Jianhua^{1, 2}

(1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. State Key Laboratory of Ocean Engineering, Shanghai 200240, China)

Received:2016-07-07 Revised:2016-09-13 Online:2017-05-25 Published:2017-06-08

Abstract

Abstract:

The large curvature jacking can be implemented by using steel pipejacking with socket and spigot joint. However the effect of the socket and spigot joint on the stress and the deformation of steel jacking pipe is rarely studied. The mechanical behaviors of large diameter steel pipejacking with the socket and spigot joint are investigated, and the jacking process is monitored. The joint deflection, radial deformation and longitudinal stress of large diameter steel pipejacking undersea are recorded in detail. The results indicate that the socket and spigot joint can meet the requirements of axis adjustment for large diameter steel pipejacking, and the deflection angle between two adjacent pipe sections is increased by nearly 19 times that of welded steel pipejacking. The stress can be effectively reduced due to the radial deflection of the socket and spigot joint and the additional stress is limited when curvature jacking.

Key words: steel pipejacking, socket and spigot joint, welded joint, field monitoring, jacking axis adjustment, stress and deformation

CLC Number:

U 455.47

ZHEN Liang, CHEN Jinjian, WANG Jianhua. Experimental Analysis of Deformation of Large Diameter Steel Pipejacking  with Socket and Spigot Joint: A Case Study of Rehabilitation Project of Water Supply Pipelines on Gaoji Seawall in Xiamen[J]. Tunnel Construction, 2017, 37(5): 578-585.

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Experimental Analysis of Deformation of Large Diameter Steel Pipejacking  with Socket and Spigot Joint: A Case Study of Rehabilitation Project of Water Supply Pipelines on Gaoji Seawall in Xiamen

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