Operation optimization strategy of existing residential building energy-saving renovation market:From the perspective of subject behavior

The energy-saving renovation of existing residential buildings is a crucial measure to achieve the strategic goal of energy conservation and emission reduction in China and build ecologically livable cities.This article focuses on the perspective of subject behavior,starting from analyzing the current situation and difficulties of the operation of the energy-saving renovation market for existing residential buildings in China,drawing on the practical experience of the operation of the existing residential building energy-saving renovation market abroad.Based on principles such as systematicity,humanization,feasibility,and sustainability,the article constructs an operation optimization system of the existing residential building energy-saving renovation market from the perspective of subject behavior.In order to provide a reference for the healthy and orderly operation of the existing residential building energy-saving renovation market,this paper proposes implementation strategies for optimizing the operation of the existing residential building energy-saving renovation market.Suggestions are proposed from four aspects:optimizing the market environment,innovating the financing model,building the information sharing platform,and utilizing the synergies of the main subjects.

Multi-subject and multi-objective integrated optimization system and implementation strategy for energy-saving renovation of the existing residential buildings

The core of the healthy and orderly operation of the existing residential building energy-saving renovation market lies in the exploration of the implementation mechanism of multi-subject and multi-objective integrated optimization.The multi-agent and multi-objective integrated optimization system framework is a powerful tool to guide the scientific decision-making of the market core structural entities in the future market practice. This paper analyzes the practical dilemma of energy-saving renovation of theexisting residential buildings in China, summarizes the practical experience of multi-subject and multi-objective integrated optimization of energy-saving renovation of the existing residential buildings in foreign countries, and puts forward beneficial practical enlightenment on the basis of comparison at home and abroad;The design principles of the target integrated optimization system have established a multi-subject and multi-objective integrated optimization system framework for the energy-saving renovation of the existing residential buildings, from six aspects: government guidance, trust consensus, value co-creation, risk sharing, revenue sharing, and social responsibility sharing. This paper proposes a multi-subject and multi-objective integrated practice strategy, in order to promote the efficient and orderly development of China's existing residential building energy-saving renovation market.

Design of Low Carbon and Energy-saving New Rural Residential Buildings in Western Parts of Heilongjiang Province

It is researched that rural residential buildings in Heilongjieng consume high energy and the living environment is poor. The research aimed at designing low-carbon and energy-saving buildings in order to reduce energy consumption by applying energy storage. Besides, the research used composite solar panel, waste- based inorganic foam materials, and polystyrene board as construction materials and integrated energy collection, living environment and farming by energy storage system. It is notable that the research would reduce pollution on environment caused by residential buildings, which coincides with national economy development and en- ergy strategy, promoting construction material industry development, with high social and economic benefits.

Energy-saving Planning and Design of Urban Residential Buildings in Hanzhong Area

Energy-saving design of residential building is an important part of energy-saving architectural design. Planning and design of residential buildings in Hanzhong area should pay more attention to the building orientation, sunshine, summer ventilation and wind resistance in winter and so on, so as to create favorable conditions for energy-saving design of single buildings. The geographical location, climatic characteristics, residents living habits and indoor and outdoor thermal environment situation were analyzed in this paper, and combined with the existing problems of energy conservation in the planning and layout of residential buildings in Hanzhong area. Based on the investigation, this paper drew some conclusions to provide references for the energy-saving planning and design of urban residential buildings in the local area.

Research on Modem Passive Integrated Energy-saving Technology of the Residential Buildings under Green Building Background

This paper proposes the modem passive integrated energy-saving technology of the residential buildings under green building background. The essence of green building is to build a healthy and general environmentally friendly living environment under the premise of reducing the consumption of resources and improving the efficiency of resource utilization in the whole life cycle of construction activities. Green building bearing function is further diversified, integrated, and has a self-initiative. The development of the green building, local isolated from the original single building greening, greening, landscaping site platform, gradually developed for construction area and the surrounding green ecological system of comprehensive, three-dimensional stratified construction and network connection. Its model gradually shows the micro area of the construction of the ecological system and architectural space integration. This paper integrates the passive integrated energysaving technology to construct the novel construction paradigm.

Defects in Concrete Elements: A Study of Residential Buildings of 30 Years and above in Onitsha Metropolis, Anambra State, Nigeria

Building defect is an issue in existing buildings that needs urgent tackling to prevent further problems. This study assessed the defects in concrete elements in residential buildings of 30 years and above in the Onitsha metropolis of Anambra State, Nigeria. Data collection instruments in the study include structured questionnaire, interviews, visual inspection/observations, archival records, recordings, photographs;and non-destructive testing of the concrete elements in an existing building in the study area. The population of this study constituted of the construction registered professionals and the existing buildings in study area. The sample for the study was based on the calculated sample size using Taro Yamani Formula. A total of 158 registered professionals were sampled from the population of 260. The questionnaires were purposively distributed to the registered professionals up to the required sample sizes of 158 and 129 questionnaires were properly filled and returned. The study used the SPSS and Microsoft Excel to analyze the data. The results were analyzed in percentages and figures using descriptive statistics and presented in the form of pie charts and tables. The finding of the study revealed that the causes and effects of structural defects on the concrete elements in existing buildings in the study area according to the rating are;exposed/corrosion of the embedded metals, faulty workmanship, overload and impacts, chemical attack, freeze-thaw deterioration, fire/heat, restraint to volume change. The visual observation revealed that the structural elements are characterized by heavy defects such as deep vertical, horizontal and diagonal cracks, exposed/ corrosion of the embedded metals, spalling of the concrete slabs. The existence of defects in the concrete members led to the low compressive strength of the concrete elements and the structural instability of the existing buildings as revealed by the non-destructive test. The non-destructive test result revealed that most of the tested concrete elements have low compressive strength value and such were remarked poor as they did not satisfy the assumed value. Essentially, the study concluded by recommending that regular monitoring, inspections and non-destructive testing of concrete elements should be conducted on existing aged and defected buildings to detect the structural stability of the buildings;and it is imperative to evacuate occupants from heavy structurally deteriorated and defected buildings since most of them have lost their residual design life span and ability to sustain imposed loads.

Energy-saving Architectural Designs for Relocation Residential Districts in North Jiangsu Province of China

By investigating present relocation residential districts for peasants whose houses are removed for the unified planning of rural areas in north Jiangsu Province, as well as residents' feelings about the environment of residential district, main architectural structures and energy consumption conditions, the indoor thermal environment, use of main heating and cooling facilities, residents' satisfaction on the acoustical and luminous environment, major space-enclosing structures and calculation of energy-saving designs are analyzed, and suggestions are given for the architectural design of relocation residential districts in the study area. It is stressed that the relationship between energy conservation and architectural layout, orientation, lighting, ventilation, selection of enclosing-structure materials, facade, color and style should be properly handled in the planning, and the focus is to control building orientation and shape coefficient, on the basis of which energy-saving designs of windows, exterior walls and roofs can be done. Energy consumption of present residential buildings is calculated and analyzed to bring forth new ideas to the energy-saving designs for relocation residential districts in north Jiangsu Province, and establish an architectural energy-saving system suitable for climatic and natural conditions of north Jiangsu to instruct the energy-saving designs of relocation residential districts in the study area.

A Study of the Guidelines for the Planning and Design of Circular Buildings

Circular building is one of the key turning points in the movement of the construction industry towards sustainable development.It is a“circulation”and“human”idea aimed at balancing the construction and design of the residential environment with the responsibility and values of environmental resources and ecology.This study was focused on the formulation of planning and design guidelines that comply with the current circular building centred economy.Input from industry operatives was collected using semi-structural interviews and a pyramidal approach was employed using logical reasoning to set up planning and design objectives as well as specifications in 4 dimensions covering 12 items.The results provide substantial references for the promotion of current environmental codes compliant with circular building.They can also be used to shape up resource circulation in the construction industry,and help to meet the many needs of sustainable development in the planning and design of circular buildings.

触媒、并生与适应:城市后工业地块居住再开发引导的工业遗产建筑再利用研究

近年来,工业遗产建筑通过保护与再利用方式积极融入后工业地块的居住再开发中。尽管“土地收储、挂牌交易、拆除新建”的模式无法保全没有历史身份的工业遗产建筑,但开发企业在局部已积极探索保护再利用与高密度开发相结合的平衡,在活化利用局部工业遗产建筑的同时,促进居住区开发模式的文化升级和整体增值。文章选取万科集团3个居住区开发项目为研究对象,将空间生产理论应用于工业遗产建筑形态演化的微观分析中,探讨后工业地块居住再开发与工业遗产建筑再利用在多重维度上的关联。研究指出,工业遗产建筑再利用的文化价值及其外部性在居住生产模式中具有示范意义,工业遗产建筑不仅通过再利用积极参与居住开发的叙事,也借由场地结构、时空秩序、关联性的建筑语言和材料语言,与高密度居住区之间形成高效互动;此外,遗产建筑再利用也面临公共性不足、符号化和绅士化等挑战。

乡村“好房子”营造研究——以浙江衢州乡熙生活村绿色乡村民居项目为例

随着乡村振兴战略的全面推进和建筑产业转型升级的不断提速,乡村民居建设产业的发展日益受到关注。本文旨在依托实际项目的实践历程,探讨乡村民居建设领域的现状及未来发展趋势,以系列课题研究的成果及实践应用为基础,从乡村民居的产品化精益设计、工业化交付体系、新型材料应用、智慧能源管理系统、全生命周期数字平台等五个方面展开讨论,系统化地讲述具体方法论及成果经验,以期为提高乡村民居建设行业的发展水平提供有益的参考。

现代住宅产业化背景下装配式建筑施工质量控制体系构建

介绍了装配式建筑施工质量控制的必要性,以及项目施工前、施工中和施工后质量控制的主要内容和目标,为解决装配式建筑施工质量控制中的问题,提出采用层次分析法建立质量控制体系,量化评估精度,并结合实例验证应用效果。

国内混凝土结构高层住宅模块化建筑发展研究

近年来国家大力推动新型建筑工业化的发展,倡导加强建筑系统化集成设计,完善集成化部品部件,扩大标准预制构件使用规模等,而高层住宅模块化建造方式更符合新型建筑工业化发展的理念。本文结合新加坡PPVC体系和中国香港MiC体系,来探索适合我国广泛推广应用的混凝土结构高层住宅模块化建筑体系,并提出现阶段国内模块化建筑发展存在的问题,为以后模块化建筑的发展提供研究方向。

高层工业化混凝土住宅碳足迹计算方法探究

在“双碳”战略背景下,我国工业化住宅推广进程逐年加速,其全生命周期碳足迹计算成为学界和业界关注的重点,但目前已有研究的计算模型在精细化、高效化方面仍显不足。文章以高层工业化混凝土住宅为研究对象,围绕工艺流程、构件生产和BIM平台3个要素,依照材料生产、集成制造、运输装配、运行维护和拆解回收等5个阶段,构建碳足迹计算模型;选择已建成的10个典型案例,以工程清单复核统计方式对上述模型进行实证校验,修正优化后得到最终计算模型,可为相关工业化建筑碳足迹研究和工程实践提供理论补充和实践借鉴。

北京市老旧住区更新技术策略研究--以北京市西城区南礼士路62号院为例

在北京城市更新加快推进的大背景下,针对20世纪70—90年代大批次崛起的多层住宅建筑的改造逐步成为更新重点,基于当下常用的立面维护修缮更新模式,研究提出区别于传统的“有限度的改造”思路,利用成熟的建筑工业技术快速建造和更新老旧住宅楼和住区,对老旧住宅楼的结构形式、地下开发、空间设计等方面进行技术性策略改造的探索。同时选取北京市西城区南礼士路甲62号院老旧多层住宅楼7、8号楼为研究对象,进行技术改造设计策略研究。

日本一种建设产业化的高层巨型钢结构住宅体系

由新日本制铁、竹中工务店等5家日本公司设计的“芦屋浜高层住宅规划方案”提出了一套全新的建设产业化多高层钢结构住宅体系的思路。与以往的钢结构住宅相比,它在钢结构住宅的建筑和结构体系、楼板和墙板体系、模数体系及细部构造和工艺流程、施工组织方面都有很大的突破和创新。简要介绍了该体系结构构成、施工工法、材料及节点连接的情况。

日本产业化高层钢结构住宅方案介绍(1)——建筑及结构体系

由新日本制铁、竹中工务店等5家日本公司设计的“芦屋浜高层住宅”提出了一套产业化的多高层钢结构住宅体系,在体 系构成、建筑部品和施工工法方面,该住宅体系与以往的钢结构住宅相比有诸多创新之处,对我国的钢结构住宅的研究 和推广工作有一定的参考价值。在此,笔者将分两部分介绍该方案的主要内容,包括:体系构成、户型布置、结构设计、墙 板与楼板体系及节点连接详图、施工工法,本文是其中的第一部分。

轻钢龙骨体系工业化住宅部品信息模型

在新型建筑工业化政策的推动下,工业化建造成为建筑企业竞相争夺的高地.轻钢龙骨体系工业化住宅是目前建筑领域最接近制造业产品生产方式的建筑,并且其建造管理也最有可能应用制造业先进的全过程信息化管理理念与技术.以此为背景,分析了信息化时代下工业化住宅建造全过程的主要活动及信息;以轻钢龙骨体系工业化住宅为例,利用Revit软件族的概念提出基于BIM(建筑信息模型)创建包含工业化住宅建造全过程信息的轻钢龙骨式复合墙的信息模型;对部品编码方法提出了建议.

BIM在住宅产业化工程中的应用

马驹桥物流B东地块公租房项目为CSI产业化住宅工程,在设计施工一体化建造过程中,通过应用BIM技术,解决了设计施工中的诸多问题,为现场施工创造了条件。

Revit在产业化住宅建筑中的应用研究

Revit是目前在国内BIM应用中最为广泛的工具软件之一。该工具的参数化模型特性与大数据承载能力非常适合产业化住宅从设计到构件加工再到施工的全过程应用。通过Revit参数化族,可较好地支撑预制构件从设计到施工各阶段的BIM应用。

日本产业化高层钢结构住宅方案介绍(2)——构造及施工工法

由新日本制铁、竹中工务店等5家日本公司设计的“芦屋浜高层住宅”提出了一套产业化的多高层钢结构住宅体系,在体 系构成、建筑部品和施工工法方面,该住宅体系与以往的钢结构住宅相比有诸多创新之处,对我国的钢结构住宅的研究 和推广工作有一定的参考价值。在此,笔者将分两部分介绍该方案的主要内容,包括:体系构成、户型布置、结构设计、墙 板与楼板体系及节点连接详图、施工工法。本文是其中的第二部分,主要介绍材料、墙板与楼板体系及节点连接详图、施 工工法。