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China
Published in Susanne Hanger-Kopp, Jenny Lieu, Alexandros Nikas, Narratives of Low-Carbon Transitions, 2019
Lei Song, Jenny Lieu, Ying Chen
Furthermore, there is significant potential for the development of prefabricated buildings and promotion of green building materials as innovative solutions to meet the green building goal, which would increase ‘passive’ ultra-low-energy-use buildings. These measures have been strengthened in several policies such as the Action Plan for Urban Adaptation to Climate Change (issued by MOHURD in 2013), the Technical Guidelines for Passive Ultra-low Energy Use in Green Buildings (issued by MOHURD in 2015) and the 13th Five-Year Plan for Energy Conservation and Emission Reduction Programmer (issued in 2017). Since the majority of prefabricated buildings are largely manufactured in controlled settings, the process reduces environmental impact during the construction phase and results in savings (compared to traditional construction methods) in water consumption of around 50%, mortar consumption of 60%, wooden materials of 80%, and energy consumption of 20%. Although the cost of a prefabricated building is around ¥1000 per square metre higher than the cost of a normal building, they are still expected to account for 15% of new buildings until 2020 (MOHURD, 2017) as set out in the 13th Five-Year Building Plan’s targets. Costs of prefabricated buildings in the short to medium term (2–5 years) are expected to decrease, through economies of scale and technological learning. In the future, the share of prefabricated buildings is expected to continue rising due to other advantages, such as reduced construction noise and dust in neighbourhoods and better-quality control of construction materials. These challenges are specifically linked to new builds, while the existing building stock faces a different set of challenges and should consider the needs of current occupants.
Modern Methods of Construction (MMC)
Published in Derek Worthing, Nigel Dann, Roger Heath, of Houses, 2021
Derek Worthing, Nigel Dann, Roger Heath
Some prefabrication of houses continued throughout the last quarter of the 20th century, e.g. timber frame housing. Higher standards of prefabricated buildings were being achieved by the end of the century, but it had also become apparent that a greater level of high-quality prefabrication was needed in order to answer a number of key demands on the construction industry, e.g. to enable faster construction, to overcome shortages of skilled labour and to reduce construction costs.
Experimental study on unidirectional tension of grouting sleeve with defects
Published in Mohd Johari Mohd Yusof, Junwen Zhang, Advances in Civil Engineering: Structural Seismic Resistance, Monitoring and Detection, 2023
Yan Wang, Tongliang Xiao, Chuang Li, Shilin Liang, Xiang Shen, Qin Hao, Pu Xun, Chengfang Wang
Prefabricated building can reduce construction period and pollution, and its performance is the same as that of cast-in-place concrete structure building. China's prefabricated structure started late and lacks scientific research results, but in recent years the country has been vigorously promoting the development of prefabricated buildings, and many excellent scientific research results and innovative inventions have emerged in the industry.
Study on mechanical behavior and optimization of prefabricated square column H-beam outer-shell joint
Published in Mechanics of Advanced Materials and Structures, 2020
Yuze Tian, Meng Liu, Zenghui Jia, Yuanyuan Dai
With the promotion of “the green building” prefabricated building becomes the trend of the development of buildings in the future. The prefabricated in factory and transported to the scene by means of transportation will be the construction method. Prefabricated building can not only achieve production industrialization, construction mechanization, labor saving and shorten the construction cycle, but also reduce the production of pollutants and promote the development of building energy conservation. The frame structure is the main structural form in the steel structure building, it is mainly composed of beams, columns and joints. The connection between the beam and the column is mainly transferred by the node. The strength of the node directly determines the safety, applicability and durability of the building. Therefore, connecting joints as an important part of the structure, to ensure the overall safety of the structure is crucial [1]. Design is an important link connecting nodes fabricated building design, but also an important part of promoting the development of prefabricated buildings.
An improved artificial bee colony algorithm for addressing distributed flow shop with distance coefficient in a prefabricated system
Published in International Journal of Production Research, 2019
Jun-qing Li, Shun-Chang Bai, Pei-yong Duan, Hong-yan Sang, Yu-yan Han, Zhi-xin Zheng
During recent years, many research works have focused on the green intelligent building optimisation problems, such as multi-zone HVAC system (Zeng, Zhang, and Kusiak 2015), optimal chiller loading optimisation problem (Duan et al. 2018; Zheng and Li 2018; Zheng, Li, and Duan 2019), and precast construction optimisation problems (Leu and Hwang 2001, 2002; Chan and Hu 2002; Benjaoran and Dawood 2003; Benjaoran, Dawood, and Hobbs 2005; Ko and Wang 2011; Chen, Yang, and Tai 2016; Yang, Ma, and Wu 2016). Compared to in-site concrete structures, precast concrete structures exhibit higher levels of production efficiency and showed more and are playing a more important role by employing highly effective manufacturing processes (Yang, Ma, and Wu 2016). Kong et al. (2017) considered the manufacture, transportation and on-site assembly sectors of precast construction projects, and proposed a dynamic programming algorithm and significantly reduced the construction waste. Chen et al. (2018) studied an automated guided vehicle (AGV)-based flow production system for the modular prefabricated horizon, and proposed a simulation based non-dominated sorting genetic algorithm. In precast production, a prefabricated building is manufactured and constructed via prefabrication from factory-made components transported and assembled on-site to form a complete building. Therefore, precast construction projects can generally be divided into three sectors, i.e. manufacture processing, transportation and on-site assembly (Yang, Ma, and Wu 2016).