This article first introduces the basic knowledge of the deformation measurement, discusses the causes and types of building deformation, tasks of deformation observation as well as its contents, methods, principles, ...This article first introduces the basic knowledge of the deformation measurement, discusses the causes and types of building deformation, tasks of deformation observation as well as its contents, methods, principles, process, and describes the main functions and contents of the deformation monitoring. In particular, this thesis describes the building settlement observation specifically and in great detail. It has carried out the analysis and research on the deformation measurement level of the building subsidence, as well as put forward requirements on the benchmark, layout and observation. Then referring to Shen Tie victory home 9 # building settlement measurement data and process, this paper explains the settlement observation level of Shen Tie victory home 9 # building level of choice and observation methods for embedding field bench mark and observation point thus to determine the subsidence and sedimentation rate.展开更多
This paper reviews some of the key enabling technologies for advanced and future laser interferometer gravitational wave detectors, which must combine test masses with the lowest possible optical and acoustic losses, ...This paper reviews some of the key enabling technologies for advanced and future laser interferometer gravitational wave detectors, which must combine test masses with the lowest possible optical and acoustic losses, with high stability lasers and various techniques for suppressing noise. Sect. 1 of this paper presents a review of the acoustic properties of test masses. Sect. 2 reviews the technology of the amorphous dielectric coatings which are currently universally used for the mirrors in advanced laser interferometers, but for which lower acoustic loss would be very advantageous. In sect. 3 a new generation of crystalline optical coatings that offer a substantial reduction in thermal noise is reviewed. The optical properties of test masses are reviewed in sect. 4, with special focus on the properties of silicon, an important candidate material for future detectors. Sect. 5 of this paper presents the very low noise, high stability laser technology that underpins all advanced and next generation laser interferometers.展开更多
文摘This article first introduces the basic knowledge of the deformation measurement, discusses the causes and types of building deformation, tasks of deformation observation as well as its contents, methods, principles, process, and describes the main functions and contents of the deformation monitoring. In particular, this thesis describes the building settlement observation specifically and in great detail. It has carried out the analysis and research on the deformation measurement level of the building subsidence, as well as put forward requirements on the benchmark, layout and observation. Then referring to Shen Tie victory home 9 # building settlement measurement data and process, this paper explains the settlement observation level of Shen Tie victory home 9 # building level of choice and observation methods for embedding field bench mark and observation point thus to determine the subsidence and sedimentation rate.
基金financial support during The Next Detectors for Gravitational Wave Astronomy workshop in Beijing in 2015
文摘This paper reviews some of the key enabling technologies for advanced and future laser interferometer gravitational wave detectors, which must combine test masses with the lowest possible optical and acoustic losses, with high stability lasers and various techniques for suppressing noise. Sect. 1 of this paper presents a review of the acoustic properties of test masses. Sect. 2 reviews the technology of the amorphous dielectric coatings which are currently universally used for the mirrors in advanced laser interferometers, but for which lower acoustic loss would be very advantageous. In sect. 3 a new generation of crystalline optical coatings that offer a substantial reduction in thermal noise is reviewed. The optical properties of test masses are reviewed in sect. 4, with special focus on the properties of silicon, an important candidate material for future detectors. Sect. 5 of this paper presents the very low noise, high stability laser technology that underpins all advanced and next generation laser interferometers.
