City Tunnel Construction Caused Building Structure Synergetics Damage Theory And The Applications

City tunnel in dense urban ground buildings and facilities, tunnel construction would bebound to the ground （structure） to buildings, roads, bridges, pipelines and other facilities tocause some damage, in order to reduce the tunnel construction causeddamage and its adverseimpact on the surrounding environment, we have to building damage caused by the excavation ofthe tunnel correctly expected.In this paper, around the Cross-Harbour Tunnel in Qingdao City, Qingdao terminal and subwaytunneling under the influence of ground-level structures damage evolution of the discussion.Along the tunnel excavation within the affected areas are more buildings, various forms ofstructure, this paper, for the two structural forms of frame shear wall structure and the bottomframe structure, tunnel construction impact, find the frame shear wall structure the response ofsurface subsidence. Through numerical simulation, the method of combining physicalexperiments and theoretical studies, respectively, from the micro and macro point of view tostudy the concrete structures and masonry structures by load conditions （surface subsidence）existing fractures co-evolution. Including the following aspects of the research:1. A new mechanical model of concrete was put forward by means of synergeticstreatment. Comparison with other research results shows that this new mechanicalmodel can explain many phenomena of concrete under loads such as accumulativedamage and its response to sudden loads more rationally. This mechanical modeloffers a new route to study the characteristics of concrete under fatigue loads anddynamic loads.2. In order to beam in-depth study of frame shear wall structure of the framework inthe emergence and development of the evolution of surface subsidence and blastingvibration under the influence of crack through the four-point bending concrete beamphysical experiments and numerical simulation, to explore the fractal dimension ofthe beam surface cracks load size, there is a relationship between the mechanicalproperties of the beam deflection, and other concrete structures, and reinforced concrete structures internal stress cracks caused by variation.3. Establish the surface settlement of mutual relations for the purpose of thearchitectural characteristics of structural cracks, based on the smoothness of the forcefluctuations in the characteristics of the concrete component damage and damageprocess, based on the Landau theory of phase transitions to concrete structures thefractal dimension of the crack for the order parameter, revealing the concretestructures set out in the process of evolution of the phase transition behavior and theorder parameter;4. Combined with Qingdao subway Line3to the excavation caused by the cracking ofthe building engineering, in-depth study of response characteristics of the surfacesubsidence of the subway tunnel construction under the bottom frame structure,combined with the theory of phase transitions, the crack in the bottom frame structureof Masonry the average orientation order parameter of the masonry structure of theevolution of the phase transition behavior and sequence parameters settlement underadditional loads on the surface.