Papers by Author: Peng Zhang

Abstract: To solve wetlands degradation is the key issues in the protective process. Coastal wetlands in Tangshan are facing the rapid decline and the deterioration of ecological function. The situation is controlled by two main factors: natural factors and human factors. The former includes the climate drought, rising sea levels and other reasons. The latter includes urbanization and port construction, water and environmental pollution, coastal industrial and agricultural production and other factors. Wetlands degradation in the study area is controlled by rapid industrialization, massive urbanization and port construction. Wetlands protection hinges on the correct understanding of their social, economic and ecological value, and its protection bringing into the overall urban development planning.

Abstract: A long-term structural health monitoring (SHM) system consisting of more than 600 sensors has been designed and is being implemented by The Hong Kong Polytechnic University to the Guangzhou New TV Tower (GNTVT) of 610 m high. This monitoring system is one of few SHM practices that integrate in-construction monitoring and in-service monitoring. It is also designed to perform a special function of verifying the effectiveness of vibration control devices to be installed on the tower. The sensory system for in-construction monitoring includes a weather station, a total station, anemometers, zenithal telescopes, level sensors, theodolites, global positioning systems, vibrating wire gauges, thermometers, digital video cameras, and accelerometers (for ambient vibration monitoring at several construction stages), and the sensory system for in-service monitoring includes a weather station, anemometers, wind pressure sensors, vibrating wire gauges, thermometers, global positioning systems, digital video cameras, accelerometers, a seismograph, corrosion sensors, tiltmeters, and fiber optic sensors (for dynamic strain and temperature monitoring). The strain and temperature at the inner structure during construction are continuously monitored by a wireless data acquisition system. This paper outlines the design and implementation of this SHM system.