With the rapid development of cities, the contradiction between urban ecology and urban development is becoming increasingly intense. To this end, three-dimensional green buildings that meet the convenience of human beings in modern cities while also taking into account the idea of harmonious coexistence with nature have emerged. In order to create a natural ecological residence, it is necessary to solve the key technologies for aerial planting of large green plants. Based on the roof garden design and taking the roof garden design of Fuzhou Strait Youth Convention and Exhibition Center as an example, this paper discusses the design concept, roof structure, drainage system, plant configuration, and other technologies of the roof garden, providing reference for the design and construction of three-dimensional greening.
Deep Foundation Pit Engineering is a partial project with more dangerous sources, in the construction process should always grasp the“Safety rope” to ensure the successful completion of Deep Foundation Pit Engineering.Based on a project in Xiamen, the paper applies BIM technology to the management and planning of Deep Foundation Pit, this paper summarizes the construction management effect of the application of BIM technology in the visual construction of key parts and the establishment of the Automatic Early Warning System for the safety risk of deep foundation pit based on BIM technology.
Landscape planting is an important feature in the construction of cities within coastal area, which plays a key role both ecologically and environmentally.However, due to the salinity soil and the damage caused by the windstorm, most urban garden plants cannot grow well on the coastal area.Taking the core area of Fuzhou Binhai New Town as an example, this paper based on theoretical research and practical experience summary, and with the concept of full life cycle design, puts forward five key measures including tree species selection, windbreak, water-saving irrigation, salt alkali resistance and management and protection, in order to provide reference for the landscaping planting of other coastal cities in China.
Recently, a series of regulations issued by the government have gradually highlighted the requirements for building carbon emission calculation. In order to better understand the spirit of codes, analyze China’s carbon neutralization goals and the impact of the construction industry on carbon emissions, and discuss the background reasons for the current development of building carbon emission rules; Understand the significance of carbon emission calculation by analyzing the needs of environment, country and people. By interpreting the provisions and formulas of the code, the main points in the calculation of carbon emissions during construction operation are analyzed:（1）carbon emissions generated by various energy systems during construction operation;（2）carbon consumption which is avoided due to the use of renewable energy;（3）carbon dioxide absorbed and stored by plants in the site. Finally, through the above points, this paper put forward the feasible energy-saving and carbon-reducing methods corresponding to them in the course of building design, so as to design a green building which meets the requirements of energy-saving and carbon-reducing.
The adjustment of Zhangzhou’s administrative division is the general trend of the integrated development of Xiamen, Zhangzhou and Quanzhou. Facing the change of current administrative division adjustment policy, Improving quality has become a new round of administrative division adjustment policy theme words, Based on the problem of spontaneous development in the new central urban area, Five strategies were proposed to improve the quality of recent development, Focuses on how to coordinate the different districts integration, Intensive utilization of its resources and form resultant force for development, Fully tap the remaining space, Optimize and integrate the industrial space, Strengthen the internal connection of each district, Raise the level from the inside and outside, At the same time, Suggestions and policy guarantees are put forward.
The ability of differential settlement, horizontal displacement and consolidation to meet the operational needs of the project was a key issue in its construction.In order to explored the effect of mound precompression on such foundation, the changes of foundation were analyzed by the monitoring data of deep stratified settlement, deep horizontal displacement, pore water pressure, surface settlement and groundwater level of a thoroughfare project in Ningde City during the whole process of mound precompression in this study.Furthermore, the hyperbolic method was used to predicted the final settlement of the foundation, and obtained the following conclusion.On the one hand, the change in settlement of deep stratified layers during precompression of the foundation mound remained essentially uniform and significant settlement occurred at a load.On the other hand, there was no horizontal displacement of the deep layer of soil on the adjacent side of the foundation, the lateral displacement of the middle and upper layers of soil was larger, while there was horizontal displacement of all layers of soil on the waterless side.In the pre-pressing process, the foundation existed in a state where no drainage was mainly accompanied by shear expansion, and with the growth of pre-pressing time, the soil completed structural re-arrangement and consolidation and gradually transforms into a drainage.The soil completed the structural re-drainage and gradually transforms into the drainage state with the increase of pre-pressing time.
Pervious formwork cloth is a new kind of geotextile for building engineering.Through analyzing the material characteristics and working principle, it is found that it can effectively improve the durability of concrete in bridge engineering, to enhance the apparent compactness and strength of concrete structure, to further improve the appearance quality and effect of concrete structure, and to create a certain social and economic benefits, it further promotes the popularization and application of permeable formwork cloth in bridge engineering and other construction industry projects.
Due to the large amount of civil construction of civil air defense engineering, the engineering construction process is often through clever design, so that the wartime civil air defense engineering and underground parking in the effective combination, not only meet the requirements of civil air defense planning and design, to ensure the needs of national wartime conversion, but also reduce the investment cost of basement construction in peacetime, improve the daily use efficiency of underground garage. In the design process, through the reasonable layout of civil air defense zone, according to the different positions of underground garage, design the most appropriate civil air defense function, so that every square meter of underground garage can be effectively used. In a large number of civil construction projects, the combined design of underground garage and civil air defense engineering can reduce the construction cost and improve the use efficiency of underground garage.
In recent years, the construction of sightseeing trestles in various places is in the ascendant. In order to achieve the effect of structure achieves the beauty of architecture, a reasonable structural system, reliable calculation and analysis, and detailed structural design are crucial. The special-shaped large cantilevered steel frame structure was selected to match the shape of the sky trestle building, and a finite element analysis model was established using beam and plate mixed elements to conduct structural natural vibration characteristics analysis, stability ultimate bearing capacity analysis, deflection check calculation, stress check calculation, and human comfort check calculation. According to the geological characteristics of the site rock and the bearing uplift force caused by the overturning moment of the cantilever structure, the foundation type was adopted spread footing + rock-anchor; In view of the environment in which the building is located, the comprehensive anti-corrosion method of atmospheric corrosion resisting steel + metal thermal spraying + coating protection was adopted. The analysis results show that the performance of the structure meets the requirements of relevant specifications, the structure is safe and reliable, the system is reasonable and the project has performed well since its operation.
Through the analysis of the actual needs of the elderly service stations at this stage, proposed the community center attached to the elderly service station must be equipped with various types of functional housing, use actual cases to analyze the relevance of each housing setting, the principle of station setting is put forward and the rationality of manpower allocation is verified by the analysis of line of care, in order to improve the operation capacity of service stations.
In the urban pipe gallery project, the surrounding terrain and traffic conditions are complex, and there are many pipelines such as HVAC,drainage, and power systems, which make construction coordination difficult.Aiming at the key and difficult points in the design and construction process of the project, combined with the actual situation of the site, the project coordination design and modeling, scheme comparison, space optimization, lighting analysis, personnel evacuation simulation Ventilation simulation, review of node structure, creation of two-dimensional and three-dimensional drawings of BIM model, application of BIM innovative technology and BIM platform in construction stage, etc.,to improve the level of design and refined management, reduce costs and increase efficiency, which is a reference for similar projects.
This paper proposes an effective and convenient safety assessment method for special vehicles to pass through existing bridges.Taking a prestressed concrete simply supported T-beam bridge with special load to be passed as the engineering background, the feasibility of passing special vehicles is determined through bridge structure detection and bearing capacity analysis; In the process of passage, the dynamic deflection, dynamic strain and crack development of the main beam are monitored, at the same time, the safety of special vehicles is monitored in real time.In addition, whether the special vehicles cause damage to the bridge is judged.
PVC form-work concrete column which used as the temporary support system for post-pouring belt has made use of the bearing capacity of the existing structure.When such temporary support system is planned to apply, the bearing capacity and deformation of existing structures shall be analyzed.Taking the stadium project as example, the scheme of using PVC form-work concrete column as the temporary support system in the post-pouring belt is designed, the bearing capacity and deformation of existing structures are checked, At last, the economic benefits of the scheme of using PVC form-work concrete column and disk lock steel tubular scaffold as the temporary support in the post-pouring belt are compared.The design of the scheme and the economic comparison of different temporary support schemes provide a useful reference for the temporary support system with similar concrete columns in the post-pouring belt.
The finite element model was established by using SAP2000 software, and the Pushover analysis method was selected to simulate the structure, and the effect of weak support in the prefabricated wall on the seismic performance of the steel frame structure was studied.The results show that the performance points can be obtained under different seismic fortification requirements and site characteristic cycles, the basal shear force of the supporting structure increases under the action of two different horizontal forces, the vertex displacement decreases, and the displacement angle between the lower layers of the seismic fortification intensity meets the seismic fortification target and is much smaller than the unsupported structure, which proves that the weak support plays an important role in the structural seismic resistance and should be considered in the structural design.
With the rapid development of building industrialization and intelligent construction, in the process of accelerating the transformation and upgrading of the construction industry and promoting the high-quality development of the construction industry, smart construction sites play an irreplaceable role. Starting with the development status and trend of digital twin technology and the help of digital twin Technology to the realization of smart construction sites, this paper expounds the development direction of the construction industry and the scheme of the structure of smart construction sites in the current environment, This paper analyzes the core technology Bim and a number of cutting-edge technologies to realize the smart site with digital twin, and summarizes how to use the digital twin technology to realize the framework of the smart site. Through the promotion of visualization, dynamic management and comprehensive application mode of engineering construction, the collaborative, intelligent and digital management of engineering management can be promoted, so as to improve the efficiency of engineering management.
This paper takes an landing optimization process of buildings in the innovative demonstration area as the research object.It takes an innovative demonstration project in Xiamen as an example from two perspectives of key materials and construction technology.In order to achieve the demonstration effect of the buildings in the demonstration area, from the preliminary research and development to the final project landing, the construction scheme of the demonstration area was sorted out, analyzed and adjusted.During the project, key materials were focused through comparative analysis, material improvement and material replacement.At the same time, the process is adjusted and the construction technology is improved.By these approaches, the architectural design scheme of the demonstration area is optimized, so that the project can be successfully implemented.The paper takes three key materials as examples.Through analysis and induction, this paper summarizes the role of selecting appropriate materials and improving technology study in the construction landing of demonstration area.Study on key materials and constrution technology can also provide reference for other practical projects.
Based on the analysis of the teaching and learning status and the investigation of the demand for civil engineering professionals in the civil engineering industry, Teaching Reform of concrete structure design theory under the background of informatization was carried out.Based on the "student-centered" teaching philosophy, ideological and political education based on professional knowledge was carried out. It can promote the cultivation of students’ spirit of scientists, craftsmen, professional ethics and so on. On the basis of theory, BIM technology was incorporated into the curriculum which combined with engineering cases and industry standards. It can realize that the connection between application-oriented talent training and industry demands was effective. At the same time, The hybrid teaching mode of combining online and offline is adopted, which reverses the current situation of light application and heavy theory, light process and heavy results, greatly improving students’ learning interest and independent learning ability. The students’ grades have been significantly improved to meet the objectives and requirements of the teaching reform, which can provide reference for the teaching reform of other courses.
In the process of subway pit construction, it is inevitable to have a large or small impact on the already existing ground buildings and so on.It is necessary to carry out relevant safety assessment work during the construction process.In order to explore the influence of the construction process of the subway station pit on the stability of the adjacent existing bridges and to provide reference for similar projects, this paper takes a new subway station as the engineering background, uses Midas GTS finite element software to establish a finite element analysis model, extracts the maximum vertical and lateral deformation data of the bridge piles during the whole construction process, and evaluates the safety of the bridge according to the control criteria.The evaluation results show that the maximum vertical displacement of bridge piles is 0.12mm and the maximum lateral displacement is 0.54mm, both of which are within the control index.During the construction of the subway station, the maximum displacement response of bridge piles is horizontal displacement, and the influence of the starting stage of foundation excavation is the greatest during the whole construction process, which needs to be focused on.
This paper analyzes the key technical points in the structural design of a commercial complex project in Fuzhou, including foundation design, temperature effect, long steel reinforced concrete cantilever beam and long span prestressed beam, and supplementary checking calculations of jump-layer column. The design of piles, rafts, and waterproof boards are coordinated by reasonably setting the subgrade bed coefficient; The practical operation method of thermal stress analysis in ultra long structures is analyzed; The computations for comfort and vertical earthquake of long cantilever beams are supplementary checked; Aiming at the widely existing large span beams in commercial buildings, the design points of prestressed large span beams are explored.
This essay investigates the spatial effect of coastal soft soil lateral displacement under preloading by applying field experiments in combination with FLAC3D data calculations.The result shows the lateral displacement increased sharply when distance between preloading edge and observation point was less than 30m（which was equal to the thickness of soft soil）,and sliding surface occurred when they get closer.The settlement of coastal soft soil was significantly increased by the lateral displacement, and the settlement of preloading remain unstable when plastic flow occurred at 100kPa load（1.88 times of the bearing capacity）.The research method and result in this essay can be applied in similar engineering projects.
