As an important part of critical infrastructure, shield tunnel is widely used in urban area of China recent years. The safety of shield tunnel during construction and operation has drawn more and more attention. In the operational period, real time deformation monitoring is an effective way to help us to reveal the long-term deformation mechanism and control the lifetime safety of shield tunn…
A shell-spring finite element model of a special-shaped tunnel was established to investigate the distribution of internal forces and deformation mode of the lining at the designed buried depth. The numerical results were compared with prototype loading test results and uniform beam model, which showed that the shell-spring model can be an optimal model to calibrate the 3D distribution of the i…
LOKASI: Ruang Koleksi Umum Rak 3
LOKASI: Ruang Koleksi Umum Rak 3
Tunnelling underneath the existing tunnels are very common these days. It is obvious that the under-crossing tunnelling will affect and even damage the existing tunnels. An analytical method is proposed in this paper to better understand the effects of the under-crossing tunnelling on the existing tunnel. The existing tunnel is modeled as a Timoshenko beam lying on a Kerr foundation. The validi…
LOKASI: Ruang Koleksi Umum Rak 3
Trr No. 1311 Pavement Design, Management And Performance, pp. 79-84 Modern photoelectric sensors ussually consist of a light emitting diode (LED) source and a phototransistor receiver with associated lenses and electronic signal-processing circuits. The LEDs are operated in the infrared wavelengths for efficiency, and are pulse modulated to overcome the adverse effects of ambient light, slight…
Second International Conference On Road & Airfield Pavement Technology, Volume 1