CAJ | 학술논문

围岩与水体的流固耦合作用对海底隧道的稳定性具有重要影响,很有必要开展流固耦合模型试验研究.根据流固耦合模型试验的特点,研制可用于模拟准三维平面应力和平面应变的新型流固耦合模型试验系统.该系统的整体尺寸为3.4 m×3.0 m×0.8 m(宽×高×厚),由钢结构架、钢化玻璃试验箱和水压加载装置组成.其中钢结构架由6榀可独立操作的高强度合金铸钢构件通过高强螺栓连接组合而成;钢化玻璃试验箱结构,既能保证试验要求的密封性,又便于可视化观察施工过程中海底隧道围岩渗流、变形特征.同时,采用研制的新型流固耦合模型试验系统和独立研制的新型流固耦合相似材料依托青岛胶州湾海底隧道开展流固耦合模型试验研究,揭示海底隧道施工过程中洞壁压力和围岩位移场、渗流场等的变化规律.研究方法技术及结果对类似工程研究具有一定的指导和借鉴意义.
위암여수체적류고우합작용대해저수도적은정성구유중요영향,흔유필요개전류고우합모형시험연구.근거류고우합모형시험적특점,연제가용우모의준삼유평면응력화평면응변적신형류고우합모형시험계통.해계통적정체척촌위3.4 m×3.0 m×0.8 m(관×고×후),유강결구가、강화파리시험상화수압가재장치조성.기중강결구가유6품가독립조작적고강도합금주강구건통과고강라전련접조합이성;강화파리시험상결구,기능보증시험요구적밀봉성,우편우가시화관찰시공과정중해저수도위암삼류、변형특정.동시,채용연제적신형류고우합모형시험계통화독립연제적신형류고우합상사재료의탁청도효주만해저수도개전류고우합모형시험연구,게시해저수도시공과정중동벽압력화위암위이장、삼류장등적변화규률.연구방법기술급결과대유사공정연구구유일정적지도화차감의의.
Solid-fluid interaction between surrounding rock and water body has significant influence on the stability of subsea tunnel. It is necessary to analyze the solid-fluid interaction involved in the construction of subsea tunnels using a model test. According to the feature of solid-fluid coupling model test,a new type of system for solid-fluid coupling model test was presented to simulate the quasi-3D plane stress and plane strain. The model test system was designed as 3.4 m in length,3.0 m in height and 0.8 m in width,and composed of rack body with steel structure,test chamber with toughened glass and loading devices of water pressure. The steel structure rack body consists of 6 steel structure members operated independently and connected by screw bolts with high strength. Toughened glass was used to assure leakproof of the test chamber and easily inspect the seepage and deformation of surrounding rock during subsea tunnel construction process. Furthermore,based on a new type of simulation material,the proposed new type of model test system was applied to the solid-fluid coupling model test for the Kiaochow Bay Subsea Tunnel. The pressure on tunnel wall,the variation of seepage and displacement of surrounding rock mass can be captured using the model test. The research methods and results will instruct similar engineering.