Absrtact: With the continuous advancement of modernization, the development speed of China's construction projects has been increasing. In the current Internet era, science and technology are developing rapidly, and information updating is faster. In order to occupy a favorable position in the fierce market competition, as a construction enterprise, it is necessary to pay attention to technological innovation and promote construction technology innovation, so as to improve the degree of informatization of construction technology. Taking the construction project as an example, this paper first understands the general situation of the construction of the construction project, and on this basis, mainly discusses the application of the new construction technology in the construction of the construction project.
Key words: construction engineering; general situation analysis; new construction technology; application discussion
Preface
In recent years, China's construction industry has been developing rapidly, and science and technology has been constantly improved. On this basis, construction technology has been greatly improved. At present, China's construction industry is facing severe competition pressure, so it is necessary to actively seek better development. Cost reduction, construction efficiency improvement, active use of modern construction technology, relying on high-tech to improve the quality of the project. First of all, we need to understand the general situation of the construction of construction projects. In the construction, we mainly adopt cast-in-place concrete structure, actively introduce new technologies, and pay more attention to the cost of the project and the process of construction technology. Promoting the content of science and technology in the construction process, speeding up the transformation of scientific and technological achievements, and actively adopting new technologies and technologies, so that new technologies have been widely used in construction, shortening the construction period. On the premise of applying a large number of new technologies, the safety of construction personnel has been guaranteed, while laying the foundation for the rapid development of China's construction industry.
1. General Situation Analysis of Construction Engineering
The total building area of a building project has reached 20180 square meters. Cast-in-situ concrete structure is adopted. There are three layers underground, 12 layers above ground, and the depth of foundation is 13.6 meters. The project is located in a busy urban area. The site of the project is low in men and high in north, and the water flow tends from north to high. After excavating the foundation pit to the design elevation, the groove is checked in time, and the construction unit fills in in time [2]. The dewatering scheme is as follows: according to the specific conditions of foundation pit plane size, depth, soil quality, water level and flow direction, single row and double row arrangement is adopted. In the single row arrangement, the width of foundation pit is not more than 6.1 meters and the dewatering depth is not more than 4.9 meters. At the same time, the location of single row well point is arranged upstream. The total depth of foundation pit is up to 12.4 meters. In the link of determining the dewatering scheme, spraying is adopted in time. The shooting point method is used for operation.
II. Problems in Construction
With the continuous innovation of information technology, construction technology has been greatly improved and cost has been effectively reduced. However, in practice, we know that there are still some construction projects in the construction of the application of new technology is not enough, the management mode is relatively simple, because the construction process is more complex, and eventually there are quality problems. The following are the technical problems existing in the construction of construction projects.
(1) Pile Foundation Technology
In the construction engineering, the pile foundation technology is the main component. In the actual design, it needs to be designed according to the actual load and settlement of the building. However, the link of pile foundation design is not designed according to the actual situation, the relevant personnel fail to design the construction drawings according to the relevant laws, and the preparatory work is not done well, which has a great impact on the construction activities of the pile foundation. ?
(2) Seepage control technology
Anti-seepage technology has a direct impact on the quality of Engineering construction. At present, attention should be paid to the problem of anti-seepage in construction. However, in anti-seepage construction, the corresponding technology is not in place and the anti-seepage treatment is not timely, which leads to the emergence of leakage problems. Because the quality of seepage control construction can not meet the standardized technical requirements, at the same time, the problem of personnel changing seepage control operation process at will appears, which is very harmful to the long-term use of construction projects.
(3) Protection Technology of Concrete in Late Stage
In the concrete construction of construction engineering, only mastering the key of construction can ensure the construction quality. However, in the current period, some people have limited concrete construction technology and insufficient professional ability, because improper use of concrete leads to crack problems. For example, without paying attention to the temperature difference between the inside and outside of concrete, the construction quality declines. In addition, in the link of concrete construction, insufficient maintenance time and lack of water lead to the emergence of hemp surface and honeycomb, which not only affects the quality of concrete construction, but also poses a great threat to the safety of relevant workers, and there are many potential safety hazards.
Discussion on the Application of New Construction Technologies in Construction Engineering
(1) Application of precise positioning technology
Precise positioning technology is GPS technology, which has been widely used in construction. For example, precise positioning technology is used in construction lofting, and control network is used. Its technology has high accuracy and speed. GPS technology is used for precise positioning, which saves more manpower and material resources and ensures the rational use of existing resources. To ensure the safety of the construction process, a large number of high-rise buildings are emerging in the present era. In order to improve the accuracy of defense work, precise positioning technology is applied in time, which not only improves the construction efficiency, but also makes scientific control of external factors, such as light, wind, temperature difference and other factors, so as to minimize the impact of external factors on the quality of defense line and apply new technologies. On the premise, the measurement and control technology has been improved continuously, and the engineering survey work has been completed more conveniently and quickly, which guarantees the quality of construction survey. The application of total station in the process of wiring can improve the accuracy of engineering survey by using the coordinate method of total station. At the same time, it has many advantages, such as integration, automation, intelligence, and so on. The advantages of new technology can be better brought into play. The coordinate method of total station is widely used in construction surveying, so that coordinate lofting can be accomplished quickly with the advantage of total station, which avoids the problems of low precision and low speed in traditional surveying methods, greatly improves the timeliness of surveying, and avoids the occurrence of measurement errors to the greatest extent [5]. Based on the application of elevation transfer technology, it avoids the time-consuming of the project and reduces the labor intensity of the personnel. With the continuous improvement, the ranging instrument measurement technology has emerged. Its advantages are: convenient data reading, less time-consuming and higher accuracy. At present, this technology is used in the elevation of construction projects in China. It has been widely used in transmission. Verticality control method is used to evaluate the quality of Engineering construction. Laser collimation technology is fully used to control verticality. It has high accuracy, is not affected by external factors, and has strong adaptability. It greatly reduces the accumulation of errors [6].
(2) Application of Waterproof Construction Technology
The link of waterproofing treatment in construction projects needs to touch the water-contact part, and take scientific measures to prevent leakage and cracks. In waterproofing treatment, first of all, we should plan waterproofing treatment measures. In this link, we should mainly consider waterproofing treatment appliances and equipment, carry out multi-channel protection, and do a good job of comprehensive protection, so as to better meet the requirements of waterproofing technology. Work requirements [7]. According to the specific situation, the appropriate waterproofing materials and waterproofing technology are selected to ensure the construction quality of the project by adopting scientific and reasonable waterproofing technology. Actively use aerated concrete brick wall for waterproofing construction, uniform plastering of wall parts in advance, and a layer of wire mesh should be added to make it play a fixed role, and then base treatment, such as: using 18% glue, mixing cement, brushing the wall parts, and then plastering, in this link we need to pay attention to: do not use excessive immersion bricks, and finally in the. After the completion of construction, maintenance treatment should also be carried out. In building roof waterproofing, the polymer cement-based coating method is used to carry out waterproofing treatment, which ensures that there is no mistake in the treatment of each node and base, that the plate seam is well treated, and that the coating is uniform. At the same time, the layer thickness is more than one millimeter, and the waterproof coating is applied many times until the coating does not flow and accumulate.
(3) Application of Reinforcement Connection Technology
In the link of reinforcing bar connection, many details need to be noticed: in the process of adopting mechanical connection method, it must be decided according to the force magnitude of the building, when the number of reinforcing bar is single, the stress state must be strictly controlled, in the link of binding joint, the control area should be decided according to the actual situation, at the same time, the joint should be well controlled for reinforcing bar beam, wall and other parts. The binding strength and reasonable control of the binding area require that the force of steel bars should not be less than 50%. For other parts of the components, the requirements should be relaxed appropriately, so as to better meet the length requirements. In order to promote the smooth connection, it is necessary to add a screw on the outside of the sleeve to promote the connection, lengthen the joint, fix the sleeve and nuts in time, avoid loosening, connect the reinforcing bar strictly according to the standardized technical requirements, and connect the reinforcing bar in accordance with the standardized technical requirements. The barrel returns to the standard screw head in time. Finally, the nut and the standard sleeve need to be locked in time. On this basis, the validity of the reinforcing bar connection process is guaranteed, and professional personnel are organized to carry out scientific inspection on the quality of the work.
(4) Application Technology of Precast Concrete Components
In the construction link of building slab joint structure, new type of prestressing hollow slab is actively used for construction. Reasonable design of prefabricated and assembled floors keeps the advantage of fast installation. After leveling, steel mesh is added in time to make it connect as a whole, which greatly improves the seismic performance of building structure. The high-strength prestressing steel wire is used as the prestressing main reinforcement of building structure. In this link, to improve the overall stability of the building structure, ensure the construction quality, actively adopt modern technology for component construction, actively improve floor structure and grouting material, effectively enhance the shear resistance between slab joints, through effective measures, timely solve the quality problems, avoid disputes between construction units and developers, use cast-in-situ concrete floor, will improve the shear resistance between slab joints. The problem of plate seam has been solved effectively. Actively use prefabricated lightweight concrete and composite wallboard, combine them with frame structure in time, adopt brick-concrete structure to improve construction quality and better meet the construction requirements of clay brick. In actual construction, assembled floor and frame structure wallboard are combined in time, thus forming frame cast-in-place beam and column, making it an assembly whole and succeeding. A prefabricated assembly building system has been formed. Developing the composite floor structure vigorously, using the prestressing steel wire as the prestressing slab of the main reinforcement part and the hollow slab as the prefabricated slab, so that it can form a large composite floor in time with the existing concrete composite layer, effectively reducing the construction process, improving the construction quality of the project, and actively applying the prefabricated concrete in the construction process.
IV. CONTROL MEASURES FOR CONSTRUCTION QUALITY OF CONSTRUCTION ENGINEERING
(1) Construction Quality Control of Pile Foundation
On the basis of pile foundation experiment, it is necessary to design drainage passages in many aspects, control the density and length of piles scientifically, analyze carefully, conform to the construction regulations, and better ensure the construction. The stability and safety of the construction process of pile foundation in construction engineering can avoid the influence of external factors on the construction of pile foundation.
(2) Quality control of concrete construction
Rational proportioning, scientific control of concrete construction quality, careful analysis of the use function of buildings, ensure the strength of concrete, send concrete samples to inspection institutions in time for inspection, and can be put into use only after qualified testing. To ensure the effectiveness of concrete construction, to ensure that the construction personnel pay more attention to the proportion of concrete, conscientiously do a good job of concrete maintenance, improve the speed of concrete transportation, improve the performance of concrete [8]. In the course of maintenance, it is necessary to operate strictly in accordance with the standard process and actively implement the concrete maintenance system so as to enhance the safety of buildings, continuously improve the construction efficiency of construction projects, scientifically evaluate the strength of concrete, effectively evaluate the strength of concrete according to different standards, get rid of the restrictions of concrete construction conditions in time, and select reasonable inspection methods. To test the strength of concrete, strengthen process supervision, effectively improve the quality of concrete construction.
Concluding remarks
Actively understand the general situation of construction projects, master the status quo of construction projects, analyze the main problems existing in the current construction projects, and take effective measures according to the actual situation. The application of precise positioning technology, waterproof construction technology, steel bar connection technology, prefabricated concrete components and other technologies should be strengthened. Using GPS technology for precise positioning saves more manpower and material resources, ensures the rational use of existing resources, focuses on waterproofing treatment equipment, equipment, etc., carries out multi-channel defense, earnestly completes comprehensive defense, actively uses aerated concrete brick wall for waterproofing construction, carries out uniform plastering of wall parts in advance, and adds a layer of steel wire mesh to make it possible. It plays a fixed role, which not only improves the efficiency of construction, but also ensures the quality of construction and promotes the stable development of construction projects.
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