摘要
根据地质力学模型试验的特点,研制出一种新型岩土地质力学模型试验系统,该系统主要由盒式台架装置、带扁千斤顶的变荷加载板、液压加载控制试验台组成。其中盒式台架装置用于容纳试验模型并作为加载反力装置,带扁千斤顶的变荷加载板用于给试验模型施加非均布荷载,液压加载控制试验台用于试验模型的自动加压与稳压。该系统具有规模大、整体稳定性好、尺寸可调、能进行同步非均匀加载,并具有加荷高、升压快速、持荷稳定的优点。将该系统应用于某一高速公路大型分岔隧道的三维地质力学模型试验研究,试验结果有效指导和优化了工程的设计和施工。
A new type of geomechanics model test system is developed. The system includes box-type rack installation, load-change plate with fiat jacks, and hydraulic pressure control test-bed. The box-type rack installation is for holding test model and providing reaction-force, the load-change plate with fiat jacks for exerting non-uniform pressure to the model, and the hydraulic pressure control test-bed for exerting pressure and automatically stabilizing pressure. The system possesses several outstand{ng advantages, such as large-scale loading, good stability, variable specimen sizes, synchronous non-uniform loading, and fast time-dependent loading.＇ The system has been applied to a 3-D geomechanics model test of a large-scale project involving bifurcated tunnels. Design and construction of the project has been effectively guided and optimized by use of the test results.
出处
《土木工程学报》
EI
CSCD
北大核心
2006年第12期100-103,107,共5页
China Civil Engineering Journal
基金
交通部西部交通建设科技项目
