Technology innovation in developing the structural health monitoring system for Guangzhou New TV Tower

TLDR

The Guangzhou New TV Tower is a 610‑m supertall tube‑in‑tube structure with a reinforced concrete inner tube and a steel outer tube. The paper presents technological innovations for developing and deploying a comprehensive SHM system for the tower, including modular design, integrated construction and service monitoring, wireless data acquisition, fiber Bragg grating sensors, health assessment, vibration‑control verification, and a benchmark problem. A sophisticated SHM system with over 600 sensors was designed and is being implemented by The Hong Kong Polytechnic University for real‑time monitoring during construction and service. Preliminary monitoring data from the Wenchuan earthquake and recent typhoons are presented. © 2008 John Wiley & Sons, Ltd.

Abstract

The Guangzhou New TV Tower (GNTVT), currently being constructed in Guangzhou, China, is a supertall structure with a height of 610 m. This tube-in-tube structure comprises a reinforced concrete inner tube and a steel outer tube adopting concrete-filled-tube columns. A sophisticated structural health monitoring (SHM) system consisting of over 600 sensors has been designed and is being implemented by The Hong Kong Polytechnic University to GNTVT for both in-construction and in-service real-time monitoring. This paper outlines the technology innovation in developing and implementing this SHM system, which includes (i) modular design of the SHM system, (ii) integration of the in-construction monitoring system and the in-service monitoring system, (iii) wireless-based data acquisition and Internet-based remote data transmission, (iv) design and implementation of a fiber Bragg grating sensing system,(v) structural health and condition assessment using static and dynamic monitoring data, (vi) verification of the effectiveness of vibration control devices by the SHM system, and (vii) development of an SHM benchmark problem by taking GNTVT as a test bed and using real-world measurement data. Preliminary monitoring data including those obtained during the Wenchuan earthquake and recent typhoons are also presented. Copyright © 2008 John Wiley & Sons, Ltd.