Discussion on influencing factors of construction progress and its control measures

A, the influencing factors of construction progress

(A) natural environmental factors

In the process of building construction, the influence of natural environment can not be ignored, because there are great differences in climate and hydrology in different regions, and different geology and landforms will also bring different obstacles to the construction process. The influence of the surrounding environment should also be considered in the construction process. If the construction project is located in rugged mountain roads or mountainous areas with inconvenient transportation, the terrain is complex, the construction site is narrow, and the supply of building materials is difficult. In case of bad weather, the safety of construction will be tested and the construction difficulty will be greatly increased.

(2) Building resource factors

In order to ensure the engineering quality, we must vigorously support the construction resources. First of all, the funds must be in place in time. Without the support of funds, the procurement of mechanical equipment and building materials in construction projects will encounter various problems, and building materials are the basis for the perfect implementation of construction projects. In order to seek greater benefits, some enterprises cut corners and use inferior materials to complete the construction, but they can't meet the requirements of construction technology. It is prone to quality problems. If the quality is not up to standard, it is necessary to repair or re-repair the construction project. From the development point of view, it not only delayed the progress of the project, but also wasted a lot of resources, thus increasing the cost of the whole project.

(3) Construction technical factors

Before carrying out a complete project, it is often necessary to arrange and plan in advance. In the process of construction, due to the changes of various natural conditions, the specific implementation of the project may not be carried out as planned. If the previous construction scheme is unreasonable, it should be adjusted accordingly in the later process. At this stage, most construction teams have limited ability to adjust the progress, and in most cases, the construction plan can't keep up with the construction progress. In addition, if high-tech technology and equipment are used in construction projects, it will be difficult to control the construction process.

(D) Construction personnel factors

The influence of construction personnel is the key factor in the construction process. A huge construction process involves a lot of contents and a large number of construction site personnel. The concrete implementation of the construction cannot be carefully checked one by one. The construction technology, self-ability and moral quality of the staff are directly related to the whole construction process. Therefore, it is necessary to arrange and manage the construction personnel scientifically to prevent mistakes during construction. Some construction workers have poor skills. However, low quality and weak safety awareness will greatly increase the danger of construction, and the quality of the project will also be implicated, making it difficult to grasp the progress of the project.

Second, measures to control the construction progress of construction projects

(A) the scientific management of the construction process

Detailed planning and design should be carried out before the implementation of construction projects. First of all, we should go to the construction site to investigate and study, scientifically arrange the construction progress according to local conditions, formulate perfect plans, strictly review the construction drawings, and carry out technical exchange activities. Participants should carefully analyze the discussion documents and modify them in time to reduce errors in the documents, so as to ensure the continuous and stable operation of the construction. Secondly, before construction, it is necessary to popularize the correct construction consciousness to employees, let them know the exact construction scheme, better understand the construction intention, organize employees to learn standardization technology and master the whole construction process, so as to make corresponding adjustments when encountering problems in the construction process. Finally, we must strictly examine contractors, select contractors with good reputation and strong strength, clarify the labor contract relationship, implement the responsibilities of all parties, prevent quality errors or other disputes, and improve construction efficiency.

(two) to ensure the supply of building resources.

Without sufficient resources, it is impossible to carry out construction projects. Therefore, it is necessary to ensure the capital circulation at this stage, make reasonable planning when arranging the construction of each section, determine the process of capital use according to the workflow, and implement the payment of funds. When purchasing building materials, we should select reputable and high-quality manufacturers, conduct strict quality review on building materials, and conduct repeated sampling tests on small accessories needed in the construction process to ensure that building materials meet the requirements of construction procedures and avoid affecting construction quality. In addition, if you buy a lot of materials, you should also pay attention to the maintenance and protection of materials to reduce the damage and corrosion of building materials by external conditions, which is the sustained and moderate development of construction progress. Finally, during the construction period, it is necessary to ensure the timely supply of equipment, check and troubleshoot the construction equipment, and the operators should standardize the use of equipment and instruments to ensure the efficient implementation of the whole construction.

(C) improve the overall quality of construction personnel

Construction personnel are the main body of a project, and their comprehensive quality affects the progress and quality of construction. Before construction, it is necessary to choose a suitable project manager, who not only has rich management experience and a heavy sense of responsibility, but also has strong mobility and organizational ability, which can drive the whole construction team to start work orderly and quickly. For the construction personnel working in the construction site, the enterprise should regularly conduct technical training for them, or hire corresponding experts to explain the elements and project contents that should be paid attention to in the construction process. Before the project starts, we should make all preparations, divide different teams according to the specific project situation, work in parallel, organize the construction process reasonably, and shorten the construction period on the premise of ensuring the construction quality. The company can also arrange an appropriate reward and punishment system to arouse the enthusiasm of the majority of construction personnel, so that employees can carry out their duties and ensure the smooth progress of construction.

(D) improve the construction technology

Construction technology affects the speed of the whole construction process. Before carrying out a construction project, we can refer to previous projects and learn from the experience of previous successful projects. According to the surrounding environment of project implementation, make a scientific and reasonable project plan, and make a pre-selection plan in advance for all possible situations. If there are problems in the construction process, we can make another alternative plan in an orderly way. In the process of construction, when implementing the project with high technical requirements, it can be completed with the help of other technical forces, or it can be constructed together with other projects to ensure the smooth progress of the construction project. In addition, in the construction process, the original plan should be adjusted reasonably according to the actual situation, and the progress management technology and measures should be continuously improved. If the project has to be postponed due to force majeure, resources such as manpower and material resources should be reconfigured, and the skills of construction personnel should be strictly required to avoid construction mistakes and affect the construction quality and progress.

Three. abstract

There are many factors that affect the construction project, and the management and control of the construction process is more important. Before a complex project is launched, the project manager should make scientific prediction and judgment according to the specific construction site, and then make appropriate plans after comprehensive investigation, strengthen project management and personnel organization, purchase high-quality construction materials, improve the skills of construction personnel, and conduct regular inspection and maintenance after the project is completed to ensure the efficient implementation of the project.

Architecture graduation thesis 3000 words 5

Discussion on the application of deep foundation pit supporting technology in super high-rise building

Nowadays, with the continuous emergence of high-rise and super-high-rise buildings, deep foundation pit projects are also increasing year by year. At present, the application of deep foundation pit support technology is very extensive, and the underground garage, underground shopping mall, basement and subway station of high-rise buildings will all involve deep foundation pit problems. With the continuous improvement of deep foundation pit construction technology, in order to better control the construction quality of foundation pit support, in the actual construction process, appropriate foundation pit support measures should be selected according to site conditions and geological conditions, so as to effectively ensure the life and property safety of construction personnel and surrounding buildings [1].

1 practical significance of deep foundation pit supporting technology

In the construction of deep foundation pit of super high-rise building, deep foundation pit supporting technology has very important practical significance. First of all, deep foundation pit supporting technology can ensure the superstructure of the project, meet the design quality standards and meet the basic conditions of engineering construction, thus ensuring the overall quality of the foundation [2]. Secondly, the supporting construction of deep foundation pit can play a key role in foundation construction and is a powerful guarantee for foundation construction. Thirdly, the deep foundation pit supporting technology provides technical support from the rigidity and strength, which effectively improves the reliability and stability of the building structure.

2 deep foundation pit support technology classification

2. 1 anchorage support

Anchor-pull support, the main materials used are: bored pile support; Section steel support; Reinforced concrete sheet pile support and so on. Anchor-pulling support is mainly used to support or anchor the upper part of the supporting structure to ensure the stability of the retaining wall. In practice, in order to save materials and improve the bearing capacity of supporting structures, one or more supporting systems composed of tensile structures are often added at the middle and top of supporting structures to ensure the smooth implementation of foundation pit excavation. The stress and support form are shown in figure 1 [3].

2.2 Cantilever bracket

The cantilever bracket is made of the same material as the anchor bracket. Cantilever support mainly relies on the horizontal resistance of supporting structure to enter the soil layer in the pit, which ensures the function of soil and water conservation during foundation pit excavation and construction safety. The stress situation and support form are shown in Figure 2.

2.3 Gravity support

Gravity support, its main materials are: jet grouting pile curtain wall, deep mixing cement-soil pile retaining wall and other supporting structures. Gravity support mainly depends on the strength and weight of the supporting structure; Anchorage length in soil, etc. To ensure the stability of the supporting structure.

2.4 soil anchor support

Soil anchor support, mainly in the deep foundation pit of basement exterior wall; Ground; The excavated soil layer on the vertical wall of the pit should be drilled, hollowed out to a certain depth, and expanded again to form a ball or other shape. Meanwhile, put a steel pipe in the hole; Steel wire bundle; Strengthening, injecting chemical slurry and cement slurry, and then combining with soil to form a powerful tensile anchor.

Application of deep foundation pit support technology in super high-rise building

The main purpose of deep foundation pit support technology research is to apply deep foundation pit support technology to urban three-dimensional development [4]. This paper mainly discusses the application of deep foundation pit support technology by taking the super high-rise building in the city center as an example. High-rise buildings mainly use reinforced concrete, and the foundation construction mainly uses reinforced concrete beam slab raft foundation.

3. 1 Investigate hydrological conditions

In the process of deep foundation pit support construction, it is necessary to investigate the hydrological conditions of the construction environment [5]. For super-high-rise buildings, according to hydrological conditions, the groundwater status of construction projects should be truthfully explained, and then the construction depth and the position of reinforcement ring can be effectively positioned to ensure the thickness of technical protection layer of deep foundation pit.

3.2 Investigation of geological structure

The investigation of geological structure needs to make clear the topography of the project site, carry out the investigation of geological soil layer, and at the same time make a comparison between soil and rock and soil to make clear the stability of soil. At the same time, the bearing standard value of foundation is deduced, so as to ensure the stability of super high-rise building construction.

3.3 Do a good job in engineering quality control

Super-high-rise building adopts reinforced concrete structure, so engineering quality control should be done well. First of all, we must ensure that the construction raw materials meet the construction standards. Secondly, ensure efficient, reasonable and orderly construction procedures. In concrete construction, the deviation between the center of protective tube and the center of pile should be within 50mm, and the thickness of mud and sediment at the bottom of the hole should be controlled to make the buried depth not less than the set value. At the same time, the continuous construction of underwater concrete pouring should be ensured to ensure the smooth implementation of all aspects of construction.

3.4 Key points to ensure construction support

Anchor rod is an important tool for supporting engineering. Soil anchor support can effectively combine with soil and greatly improve the stability of building structure, which should be paid attention to in support work.

4 conclusion

Foundation pit engineering is one of the important parts of building engineering. The construction quality of deep foundation pit directly affects the overall stability, safety and durability of super high-rise buildings. The construction technology of deep foundation pit is the guarantee for the smooth implementation of the project, but in reality, there are problems of technical complexity and diversity in the construction technology of deep foundation pit. In the future, we should strengthen the research and understanding of its technology to ensure the smooth construction of high-rise buildings.

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