Ditapis dengan
A Theoretical Method of Estimation of Loosening Pressure of Tunnels in Soft R…
LOKASI: Ruang Koleksi Umum Rak 2
Ground Surface Deformation Analysis of Quasi Rectangular EPB Shield Tunneling
The first quasi rectangular shield tunnel in China was developed during the construction of Ningbo Metro Line 3. Based on the Mindlin solution, this paper presents the computerized outcome of the ground surface deformation caused by the following three factors: the hirizontal excess pressure at the exavation face, the frictin between the shield skin and soil, and the grouting force outside the …
TBMs: Capabilities, Limitations and Challenges
The Tunnel Boring Machine (TBM) technology has significant advantages over conventional Drill & Blast method, and it has become one of the most common tunnel excavation methods in the world. However, weaknesses of TBM such as the poor adaptability to complex geological conditions create a bottleneck in its functionality, and restrict its further development. Therefore, factors such as engineeri…
Progress of Research Advance on the Model Tests on the Interaction Between Ne…
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…
Studies on the Key Technologies for Underground Construction of High-Speed Ra…
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…
Cutter Ring Breakage Induced by Unbalanced Side Force in Circular Cutting Pro…
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…
Speed Effect Analysis and Canceling Model of a Responce-Type Road Roughness M…
TRR 1260 Pavement Design, Management And Performance, pp.125 Response-type road roughness measuring (RTRRM) systems have been widely used in United States and internationally in the evaluation of pavement surface roughness. One of the major problems associated with the calibration and operation of RTRRM systems has been the speed dependence of the systems. A reporting statistic from an RTRRM s…
