With the rapid development of China's overall economy, the construction engineering industry is gradually improving. Architectural engineering is an important environment for people to live, and its quality and safety are directly related to people's life and property. The most important part of the construction project is the mechanical and electrical installation, to realize the cost control of the project is the key point of the project. This article mainly explains the mechanical and electrical installation engineering in building engineering, and introduces the installation and construction technology in mechanical and electrical installation engineering in detail, and analyzes the control difficulties. It provides an important reference for the management of mechanical and electrical installation technology in the future.

Reliable estimation of rock fragmentation is an important issue in the blasting operations in order to predict quality of the production. Since rock fragmentation is affected by various parameters such as blast pattern and rock mass characteristics, it is very difficult to have an appreciate prediction of it. This paper describes a new hybrid imperialism competitive algorithm (ICA)-artificial neural network (ANN) in order to solve shortcomings of ANN itself for prediction of rock fragmentation. In fact, the influence of ICA on ANN results was studied in this research. By investigating the related studies, the most important parameters of ICA were identified and a series of parametric studies for their determination were conducted. All models were built using 8 inputs and one output which is rock fragmentation. To have a fair comparison and show the capability of the new hybrid model, a pre-developed ANN model was also considered and constructed. Evaluation of the obtained results demonstrated that a higher ability of rock fragmentation prediction is received developing a hybrid ICA-ANN model. Coefficient of determination (R²) values of (0.949 and 0.813) and (0.941 and 0.819) were obtained for training and testing of ICA-ANN and ANN models, respectively which indicated that the proposed ICA-ANN model can be implemented better in improving performance capacity of ANN model in estimating rock fragmentation.

With the improvement of the social and economic level, the quality of people's lives has been significantly improved, and environmental protection has gradually attracted people's attention. Environmental protection projects have developed rapidly in this environment. In order to further improve the environmental protection effect of the project construction, it is necessary to do a good job of control and management of the construction site. Judging from the current situation, there are still many problems in China's environmental protection engineering construction site management. Based on this, this article analyzes the deficiencies in the field management of environmental protection projects and proposes corresponding solutions, hoping to promote the overall level of environmental protection projects.

Human life is inseparable from water resources, and human development is inseparable from electric energy. Water conservancy and hydropower project plays a very important role in all stages of human development, whether it is power generation, irrigation, flood control or drainage, which can not be separated from the construction of water and hydropower projects. This paper briefly discusses and analyzes the basic treatment construction techniques for water conservancy and hydropower projects, giving full play to the key role of water conservancy and hydropower projects in the development of national economy.

HVAC is a part of building equipment. The quality of HVAC engineering in buildings is directly related to whether buildings can be directly put into operation. Based on the importance of HVAC construction, we must master the relevant construction technology and analyze the difficulties in the construction, and ensure the overall level of the HVAC construction as far as possible. This article analyzes the difficult points of construction HVAC construction, focuses on the key countermeasures to deal with these problems, and provides a quality assurance for the construction of HVAC projects in China's construction projects.

In recent years, China's economic level has made rapid progress. The construction industry occupies a large proportion in the overall economy, and people pay more and more attention to the construction of various projects. The quality of construction projects is directly related to the safety of people's lives and property, which puts forward higher and higher requirements for the construction technology level. As we all know, road subgrade and bridge engineering have certain complexity, and construction takes time and construction environment is bad. In recent years, with the increase in the number of relevant projects, more and more problems have emerged. This article analyzes the construction technology of road subgrade and bridge engineering, focuses on the key technologies in construction, and makes the project construction as much as possible to meet the needs of human production and living.

 With the current social and economic development, people have a new understanding of the development of the construction industry, from the quality of building to the cost of building work to management, it can be said to be a series of updates. Traditional cost control has been unable to meet the needs of the current society, for consumers, the quality is the most important, including the control and management of project cost. However, for the investors, it is necessary to control the cost and help the control of a large number of funds. This paper carries out work on the cost control and management of the whole process of the construction industry, from the relationship between the two to the suggestions between the two, to improve the economic benefits for the development of the construction industry, and to bring great benefits for the social development.

 With the continuous growth of social economy and the continuous development of cities and industries, the construction industry is still on the rise. Today, various raw materials and resources are still lacking, and fierce market competition has led to the development of construction companies. With the improvement of the requirements, how to optimize the dynamic management and cost management of construction cost in the construction process of the construction company is the only way for the construction company to obtain the market trust and approval, and to obtain the maximum profit. On the basis of introducing the dynamic management and cost control optimization of construction project cost, this article has carried on the related research from the aspects of principles, obstacles and steps.

With the development of the times, people's economic level is improving, the urban construction is accelerated, the road, bridge and tunnel construction as the focus of the urban construction scale of construction projects and the construction quantity is also growing. Subsequently, people pay special attention to their quality problems. At the same time, there are many difficulties and technical problems waiting to be solved in the construction process. These difficulties and technical problems are the important factors influencing the quality of tunnel construction. Only strictly and comprehensively control it so that the roads, bridges and tunnels can be well and rapidly developed. Next, the paper will make a comprehensive analysis of the difficulties and technical countermeasures in the construction of road bridge tunnel.

This study briefly summarizes the results of experimental tests performed on optimal designed Angelina™ steel beams. The objective of the investigation was to study the effect of hole geometry on the mode of failure and ultimate strength of such beams under loading conditions. For this purpose, six optimal designed Angelina™ beams are tested in a self-reacting frame to determine the ultimate load carrying capacities of these new generation web-expanded beams. The specimens were all fabricated from IPN beams and were expanded to almost 1.5 times the original depth. All specimens were fabricated from ASTM A-36 steel. The design methods for the specimens will be the harmony search algorithm and particle swarm method which are stochastic search techniques. The minimum weight is taken as the design objective while the design constraints are implemented from the SCI (Steel Construction Institute). Design constraints include the displacement limitations, overall beam flexural capacity, beam shear capacity, overall beam buckling strength, web post flexure and buckling, vierendeel bending of upper and lower tees and local buckling of compression flange. The design methods adopted in this publication are consistent with BS5950.

This article covers the actual issues that rise up the trend of computerized integrated production. The large number of machining tools for production of a specific workpieces requires a principally new approach to the control of such production. In such type of industrial information, monitoring and control systems replace the human operator. Therefore machining systems state monitoring becomes essential today in control of the machining operations. The concept for E-Mind Machine intelligent platform for the CNC machining tools is presented in this paper and the detailed information on its structure and components is given.

Municipal drainage works is a basic project in the process of urban construction. If there is a lack of drainage engineering in municipal engineering, it will affect the normal life of people. In other words, the quality of municipal drainage works directly relates to the development of urban processes and the quality of life of urban residents. Therefore, it is very important to ensure the quality of the municipal drainage project. This article briefly discusses the construction technology and quality control of municipal drainage engineering. Seeking for critical technologies in the construction of municipal drainage projects to provide a strong guarantee for the development of cities and people’s lives.

The rapid economic growth in China has promoted the development of all walks of life. The most prominent is the construction industry. The safety management of the project construction during the construction process is very important. If there is a safety problem in construction, it will not only affect the progress of the construction, but serious loss of people and property will occur. Therefore, we should pay more attention to the safety management of the construction. Therefore, we should strengthen the management of safety management and improve the prevention of safety technology. Only under the premise of safety can the progress of the construction work be normal and the requirements of the project before the design are reached. Today we are in the engineering construction safety management problem is analyzed, and the problems of construction safety management is put forward rationalization proposals, prevent the occurrence of all kinds of problems in the engineering construction, to ensure security in project construction.

With the rapid development of economic development in China, the urban construction is gradually deepening. The scale and scope of the construction project are getting larger and larger, and the engineering management is faced with many challenges. At present, many construction enterprises have some problems in the management of construction projects. In order to improve the quality management level, the whole process of supervision and management must be done. Take effective measures to solve the problems existing in the construction and ensure the smooth completion of the whole project construction. This paper analyzes the existing problems of construction quality supervision and management, and puts forward some concrete measures. It is hoped that the level of industry supervision and management can be improved to ensure the realization of the quality objectives of the project^[1].

For a country, the industry is a very important system, the embodiment of the country's comprehensive national strength, the country's economic development level and the development of science and technology level has direct impact on industry. The development of chemical industry also has great impetus to the national economic development. The technical requirements for chemical engineering are particularly high. Because of the danger of the chemical itself, safety becomes the first thing to notice in the construction process. In order to prevent the occurrence of danger in the actual construction process, the safety of chemical engineering construction is made, and the effective safety management is the most critical step. A reliable safety management is the guarantee for the smooth construction of the construction, so the early safety management becomes the key to the development of the chemical industry. Chemical engineering is an extremely complex and changeable system, and the kinds of problems involved are very many, which requires the construction personnel to pay more attention to ensure the safety. In order to implement the safety management measures in the process of chemical engineering construction, it is necessary for the management personnel to strictly control the whole construction process. In case of any problem, we should deal with it in a timely manner and pay more attention to the details. We should pay attention to fire prevention, pollution prevention and anti-explosion prevention. Technical personnel should pay more attention to technical problems and eliminate safety hazards. The construction company must also strengthen the personal quality of the project management personnel and other issues. It is necessary to examine personal responsibility and safety awareness and avoid unnecessary losses caused by various construction safety issues to the company^[1].