Investigation of Collapsed Building Incidents on Soft Marine Deposit: Both from Social and Technical Perspectives

Abstract

Abstract:A collapsed incident occurred on 10 October 2016 in Wenzhou City, China, which resulted in 22 casualties and 6 injuries. Most of victims were migrant laborers (rural dwellers who move to urban for a temporary work), who rented apartments in these residential buildings, which were originally constructed by local rural residents. This case report investigates the collapsed incident as well as other similar previous incidents. From the perspectives of both social and technical aspects, this report analyzed the Chinese rural land use policy with relevant technical factors. These incidents reveal social problems of the existing dual structure land-use policy in China. Chinese dual structure land-use policy caused deficiencies in the supervision of the construction market in rural area so that the following technical factors were not well supervised by the various quality control departments: (1) poorly quality of residential buildings, (2) unauthorized rooftop additions, and (3) differential settlement caused by the uneven distribution of underlying Wenzhou clay under creep conditions. Mandatory regulation by the government for any construction in China, particularly for the construction of self-constructed house building sites in rural areas, was recommended to minimize the resettlement issue of migrant workers.

Assessment of Social-Economic Risk of Chinese Dual Land Use System Using Fuzzy AHP

“…For social issues, e.g., collapse incidents in the rural area surrounded by urban areas, the poorly built structure of the collapsed building was the main reason for the incident, which was due to poor management under the DLUS. According to the statistical result by [31], there were more than 12 collapse incidents from 2009 to 2016 [31]. To mitigate the risk of future similar incidents, it is recommended that the principles of SEA should be implemented, particularly for the principles of sustainable development (A) and monitoring measures (E).…”

“…Thus, under the DLUS, since there is not enough government supervision of construction in rural areas, the quality of buildings constructed by the rural residents is poor. There have been more than 13 collapse incidents from 2009 to 2017 [31,32]. As illustrated by [31], the incident locations were mainly located in the coastal area of China.…”

“…There have been more than 13 collapse incidents from 2009 to 2017 [31,32]. As illustrated by [31], the incident locations were mainly located in the coastal area of China. In the past three decades, the coastal area has experienced rapid development.…”

Foundation Pit Collapse on 8 June 2019 in Nanning, China: A Brief Report

“…The economic boom in China has triggered rapid urbanization over the past 20 years, leading to a continuous increase in demand for residential, commercial, and office areas, and urban infrastructure such as highways, bridges, and metro systems [1][2][3][4][5][6][7][8][9][10]. To meet the market demand, developers and contractors prioritize short completion times for these projects.…”

Flooding Hazards across Southern China and Prospective Sustainability Measures

“…In 2013, the urbanization rate increased to 58%, and it is expected that this rate will reach 80% in the near future. At present, more than 50% of cities are experiencing urbanization, as increasing numbers of people move to urban areas, especially to the coastal Chinese cities.Rapid urbanization triggers the construction of roads, bridges, and underground transit networks [18][19][20][21][22], as well as the development of residential areas [23]. Increasing numbers of river banks and lakes are being reclaimed [24][25][26].…”