Absrtact: The application of prefabricated pile construction technology has shown a strong advantage at present. In order to better control the construction technology of prefabricated pile, it is essential to strengthen the management of each basic operation process. The construction of prefabricated pile geotechnical engineering needs detailed and comprehensive supervision, clarifying its basic construction needs and key points, and focusing on upgrading. The quality level of construction shall be implemented. In this paper, the application of construction technology of prefabricated pile foundation in geotechnical engineering is analyzed and discussed.
Key words: prefabricated pile foundation; geotechnical engineering; construction technology; quality control
The construction of geotechnical engineering projects plays an extremely important role in the current social development. In order to promote the construction of geotechnical engineering projects to be more reasonable and efficient, it is necessary to make a detailed analysis and exploration around the basic construction content and technical means, especially to ensure that the foundation treatment in geotechnical engineering construction is more standardized and reasonable. In the foundation treatment of geotechnical engineering, the application of prefabricated pile foundation is an important basic treatment method at present. Compared with the traditional pile foundation treatment mode, prefabricated pile foundation has obvious advantages. It should be attached great importance to in the construction of geotechnical engineering projects in the future and give full play to its due value [2].
1 Prefabricated Pile Foundation Pile Geotechnical Engineering Construction Technology Overview
Prefabricated pile foundation mainly refers to the production of pile foundation structure in advance in the factory or construction site, so that it can form a more ideal shape and structure, and then directly carry out pile driving treatment in the construction site, so as to promote its strong foundation treatment effect. In the process of construction and treatment of prefabricated pile foundation pile, it has strong flexibility and can be analyzed in detail according to the actual needs of geotechnical engineering projects, so as to enable it to have ideal applicability effect, effectively solve some obvious problems in foundation construction and treatment, and meet the current needs of geotechnical engineering foundation. In the current construction treatment of prefabricated pile foundation pile in geotechnical engineering, it mainly involves three basic types: solid pile, hollow pile and steel pile. These prefabricated pile treatment methods are reasonably set up in combination with specific geotechnical engineering, which can also reflect a strong role value, solve possible quality defects, and enhance the stability and bearing capacity of the whole foundation structure [3]. Combining with the effective application of the construction technology of precast pile foundation in geotechnical engineering, compared with the traditional treatment mode of cast-in-situ concrete pile foundation structure, the precast pile foundation structure can really show strong value and obvious advantages, which are embodied in the following four aspects: firstly, the construction cost of precast pile foundation is relatively low, and the treatment mode of traditional cast-in-situ concrete pile foundation is comparatively low. Low cost, only half of the original construction cost, and then can reflect strong economic benefits, which is also an important reason for the wide application of this type of construction treatment mode at present. It is conducive to the optimization of the overall economic benefits of geotechnical engineering projects, which needs to be paid great attention to in the specific construction treatment; secondly, the application of prefabricated pile construction technology. It also has obvious advantages of construction convenience, the corresponding construction process is relatively simple, there is no more complex construction projects, especially from the point of view of the construction site, its existing treatment difficulty is relatively small, will not waste more construction resources, construction efficiency is relatively high, the construction period can be relatively shortened, so it can reflect the strong implementation. In addition, the application of prefabricated pile foundation construction technology can also show a strong green environmental protection effect. During the whole construction process, there is no obvious environmental pollution factor, which avoids all kinds of potential threats in the construction of traditional pile foundation treatment, realizes the civil safety optimization of construction site, and is subjected to geotechnical engineering projects. Finally, for the application of prefabricated pile foundation construction technology, it can also show a strong bearing capacity effect. Compared with other treatment modes, the bearing capacity of single concrete of prefabricated pile foundation pile has been significantly enhanced, which helps to improve the stability of the whole geotechnical engineering.
2 Key Points for Construction Control of Prefabricated Pile Foundation Pile in Geotechnical Engineering
In order to better promote the construction technology of prefabricated pile foundation to show a strong value, it is often necessary to focus on the various construction processes and basic links to focus on checking, to promote its performance of a strong advantage, to achieve the evasion control of various factors, of which the key points of construction quality management are as follows: (1) detailed inspection of prefabricated piles. In the construction treatment of prefabricated pile foundation geotechnical engineering, it is a core link to do well the inspection work of prefabricated pile. It needs to improve the practical application efficiency of these prefabricated piles. The appearance, specifications and types of prefabricated piles should be examined in detail to ensure that they can show strong function advantages and avoid the construction of prefabricated piles with mismatched application types. In the inspection process of prefabricated piles, it is also necessary to make detailed checks around the hidden quality problems, such as pile head breakage and bending problems, which need to be analyzed in detail to comprehensively improve the overall construction quality effect and lay a good foundation for subsequent pile driving operation. In addition, in the inspection and analysis, pile head and joint are the key points that need to be checked in detail, which should be explored in detail, and the existing problems of precast piles should be cleared. It is also an essential step to carry out detailed verification and analysis of the product warranty and other reporting materials of prefabricated piles. (2) Clear piling sequence. For the implementation of construction technology of prefabricated pile foundation, it is also an important aspect to clarify the order of piling. It needs to make a reasonable layout around the discharge of prefabricated piles to ensure that it can reflect strong effectiveness and effectively avoid the large construction interference problems that may be caused by the unreasonable arrangement of prefabricated piles. In order to make the pile driving sequence clear, it is necessary to analyze the local conditions in detail, and to analyze the geotechnical conditions, geological conditions and construction requirements in detail, so as to make reasonable planning according to the type and size of prefabricated piles, and to ensure that the geotechnical engineering infrastructure after the completion of prefabricated pile driving can show strong effectiveness, which needs comprehensive consideration. (3) Standardize piling operation. In the construction treatment of prefabricated pile foundation, pile driving also needs to be paid enough attention. It should be ensured that it has a better understanding of the geotechnical engineering geological conditions and can form a strong adaptability. Especially for the hard soil layer that may be encountered, it is necessary to apply reasonable pressure to avoid the problem of instability of pile foundation structure caused by excessive force. In the process of piling, it is also necessary to ensure that the location of the pile is relatively clear, which can better avoid the possible problem of pile sinking deviation, so as to enable it to have ideal vertical effect and avoid affecting the bearing capacity level of the follow-up overall foundation structure. In the process of pile driving, it is necessary to grasp the possible breaking problems, pay attention to the light lifting and light lifting of prefabricated piles and reasonable exertion, so as to ensure their orderly integration into the foundation structure of geotechnical engineering. The position of the final pile-driving also needs to be paid great attention to, so as to ensure that the pile-driving can be effectively controlled in the most ideal foundation structure and enhance its bearing capacity. (4) Acceptance control. After the reasonable piling treatment of prefabricated piles is completed, it is often necessary to strictly control the final acceptance link to ensure that it can effectively analyze the application performance and specific quality effect of prefabricated pile construction technology. With the help of advanced non-destructive testing technology, the problems with quality defects are corrected in time, and reasonable measures are taken to repair them in time. Finally, the stability and bearing capacity of the prefabricated pile foundation structure of the whole geotechnical engineering will be improved.
3 conclusion
To sum up, for the effective implementation of construction technology means of prefabricated pile foundation geotechnical engineering, its application advantages are obvious, and it does have a typical application characteristics. It is necessary to effectively control the basic construction process and important links, avoid the possible greater threat, and comprehensively improve its construction efficiency.
Reference:
[1] Wang Jin. Application analysis of precast pile in eliminating liquefaction of sand [J]. Sichuan Cement, 2017 (12): 324.
[2] Zhong Jianmin. Quality problems and treatment of pile foundation caused by compaction of precast pile driving [J]. Architectural structure, 2017,47 (S2): 458-463.
[3] Guo Zhiwen. Accident treatment and analysis of prefabricated pile foundation engineering in soft soil area [J]. Jiangxi Building Materials, 2017 (16): 89-91.