| FRP laminate is an ideal substitute of high-strength steel in modern concrete structure owning to its high strength, light weight, excellent rust-resistance, etc. Meanwhile, taking the advantages of external prestress can not only make full use of the high strength performance of FRP, but also can avoid the interface stripping between the fibers laminate and concrete members. Therefore, the study of FRP laminate anchor mechanism and application technology is the key technology to achieve application of FRP laminate in external prestress technology.In the thesis, according to the features of the anchor performance of FRP laminate, combining the anchor principle of steel strand wedge-clip anchorage, basing on the theoretical analysis and experimental study, the author presents a wedge-variable ripple-clip anchorage system which specializes in FRP laminate external prestress technology. Meanwhile, combining the features of concrete thin-walled box girder, the author does analysis on the application of FRP laminate external prestress concrete thin-walled box girder. The main research results are as follows:(1) According to the features of the anchor performance of FRP laminate, combining the anchor principle of steel strand wedge- clip anchorage, the author presents anchor mechanism on FRP laminate external prestress wedge-variable ripple-clip anchorage.(2) Having had a key parameters analysis on wedge-variable ripple-clip anchorage which specializes in FRP laminate external prestress technology, below is the main content: the shape of variable ripple tooth, anchor length, clip ripple profile and anchor efficiency, etc, thus the length calculation formula of FRP laminate anchor is inferred theoretically; By quoting the concept of softening region and angle difference, the problem about the incision effect of clip is solved; the author has also proposed some measures on optimal design of the anchorage.(3) The wedge-variable ripple-clip anchorage the author designs and develops mainly consists of pressure cover, external anchor shell, variable wave-grip, high-strength bolts, etc.(4) Through the static load tests study on the anchorage, the experimental research has finally confirmed the anchor gripping ability of the anchorage.(5) According to the FRP laminate external prestress strengthening technology, the author has proposed the corresponding technical measures on external anchor and prestress tension FRP laminate. Regarding to the different cross-section shape of concrete structures, the author has assured some measures of anchor-area tectonic and deviators tectonic about FRP laminate external prestress.(6) Combining the features of concrete thin-walled box girder, the author has made some analyses on the application of FRP laminate external prestress concrete thin-walled box girder. Moreover, the author has further studied on the tectonic measures of tension control, anchor area and deviators.
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