The tunnel leakage in sand layer plays an important role in the evolution of the lining stresses and the ground movement. The phenomenon of internal erosion occurs when underground water leaks into the tunnel from the damaged joints or the cracks of the linings. Fines in sand are pulled off by seepage forces and transported throughout the soil matrix into the tunnel. The loss of fines due to se…
LOKASI: Rak Koleksi Umum Rak 2
The model tests on the interaction between new constructions and adjacent existing buildings were summarized and analyzed from four aspects: the preparation methods of the model soil, the selection of pile model and tunnel model, the simulation methods of excavation process, and the loading methods of model tests. Several conclusions can be drawn as follows: (I) the influence of the superstruct…
Using the practice of Ningbo high-speed railway station transportation hub as an example, we studied and reported on the key technologies for the construction of an urban railway transportation hub that integrated the functionalities and structures of a railway, subway, city bus, and taxi stations for traffic and passenger transportation. Specifically, we first studied the impact of deep founda…
The cutter ring breakage as a cutter failure mode in shield tunnel construction is more likely to occur in the centre zone of cutterhead. Given the inconsistence of this phenomenon with the linear cutting theory, the present paper suggests the use of the circular cutting theory to explain the cutter ring breakage and find the correlation between the unbalanced side force and cutter ring breakag…
LOKASI: Ruang Koleksi Umum Rak 3
Resonant rubblization technology is often utilized to rehabilitate deteriorated condrete pavements. Vibrations induced by a resonant breaker would produce detrimental effects on lining structures in tunnel during rubblization construction. The in-situ experiments were carried out in Yangjiao Mountain Tunnel in Zheijiang Province, China. First, the characteristics of rubblization-induced vibrati…
LOKASI: Ruang Koleksi Umum Rak: 1