We all know that everything has been done as hard as we can at the beginning, and we are trying to make it better so that we can lay a good foundation for our future development. If it is a construction enterprise, if its foundation and pile foundation are not well laid, then there is a danger that it will collapse at any time during or after its construction. Therefore, the building pile foundation technical specifications play a fundamental and decisive role for the entire building. So here I will give a brief introduction to the technical specifications of the pile foundation .
Technical specification of building pile foundation
The primary principle of the technical code for the construction of pile foundations is that the design of the pile foundation must take into account the geological and hydrological conditions of the whole lot where it is located, and safety is the primary principle. In addition, the size and number of layers of the entire project must be taken into consideration so that the bearing capacity of the pile foundation can be taken into consideration, so that the number of pile foundations and their respective carrying capacity can be reasonably considered. Therefore, the primary principle of building pile foundation technical specifications is to ensure its quality and safety.
The technical specifications of the pile foundation indicate the content of the data to be collected before the pile foundation design, including factors such as rock conditions, environmental conditions, engineering, and its construction environment. The condition of the rock is the geological and hydrological conditions mentioned in the previous paragraph. Environmental conditions refer to the conditions surrounding the site of the project, various types of pipelines, etc., as well as the level of safety precautions of the surrounding buildings; engineering factors refer to It is the specific parameters of the project; construction environment factors refer to whether the supply of building materials is sufficient and convenient, and whether various construction machines can move freely on the site.
The technical specification of the pile foundation requires different loading conditions to select different types of pile foundations. It is generally based on which part of the pile foundation is responsible for the decision. In addition, when designing pile foundations, it is also necessary to consider when pile foundations are under load or when they are subjected to buoyancy.
The technical specification of the pile foundation clearly states that the existence of cracks within a certain range of the pile foundation is acceptable, but if it exceeds this range, then the entire building will have potential safety hazards. Therefore, when designing the pile foundation, it is necessary to clearly indicate its bearing capacity so that its bearing capacity changes within its controllable range.
The technical specification of the pile foundation also includes the introduction and selection of the pile forming technology. In general, the pile type is determined on the basis of local conditions, subject to certain subjective colors.
Construction acceptance specification for construction pile foundation
I. Pile foundation and Chengtai project acceptance data
1. When the design elevation of the pile top is similar to the elevation of the construction site, the acceptance of the pile foundation project should be accepted after completion of the pile construction. When the design elevation of the pile top is lower than the elevation of the construction site, the excavation to the design elevation shall be carried out after acceptance.
2. Pile acceptance should include the following information:
(1) Engineering Geological Survey Report, Pile Foundation Construction Drawing, Minutes of Drawing Review, Design Change, and Material Submission Notice.
(2) The approved construction organization design, construction plan and changes in implementation.
(3) The pile position measurement line diagram, including the construction site line review visa form.
(4) Pile formation quality inspection report.
(5) Test report for bearing capacity of single piles.
(6) Floor plans and pile top elevation diagrams for foundation piles excavated to design elevation.
3. The following information should be included in acceptance of the contractor's works:
(1)Construction and inspection records for the steel and concrete slabs of the platform.
(2) The distance between the anchorages of the pile heads and pile caps, the distance between the edge piles and the edge of the bearing platform, and the record of the steel reinforcement cover of the platform.
(3) Cap thickness, length and width records, and appearance descriptions.
Two. Pile quality inspection
1. Pile quality inspection of bored piles mainly includes the quality inspection of three process steps: hole formation and clearance, reinforcement cage making and placement, concrete mixing and infusion.
2. For the first-class construction pile foundation and pile foundation engineering with complex geological conditions or low reliability of pile quality, pile quality inspection should be carried out.
3. The deviation of the pile position should be checked according to the relevant regulations according to different pile types.
Three. Single pile bearing capacity testing
In order to ensure that the actual ultimate value of the vertical ultimate bearing capacity of a single pile meets the design requirements, a single pile static load test or a reliable dynamic test should be performed according to the importance of the project, geological conditions, design requirements, and construction conditions.
IV. Construction of manual digging piles
Before opening the hole, the pile position should be positioned accurately. In positioning the long-piled pile house outside the pile position, the position of the template must be corrected by the pile center point for the installation of the retaining wall formwork, and the special person is responsible for it.
Editor's summaries: The technical specifications of the building pile foundation also include the introduction of concrete contents such as concrete and cast-in-place piles, as well as the introduction of acceptance techniques for pile foundations. Therefore, the building pile foundation technical specification is a very comprehensive technical specification that the building pile foundation should follow, and it is worthy of your attention.
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