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Anonymous users2024-02-07After the pile head is broken, the pile test and inspection should be carried out, and the cushion cap cushion should be poured after qualification, and then the formwork should be installed with steel bars, and the cushion cap concrete should be poured. There is a 'brick enclosure' that may be a side formwork for the cushion cap.
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Anonymous users2024-02-06The unexcavated soil layer will be damaged by the action of temperature difference, precipitation and humid air in the open state, and the bearing capacity of the soil layer will be reduced. Timely cushioning, timely pouring of foundation or retention of 150-300 thick soil layer can prevent the unexcavated soil layer from being damaged by temperature difference, precipitation and humid air in the open state to the bearing capacity of the soil layer.
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Anonymous users2024-02-05If you need to use a large plate bending machine, see if there is such equipment in the local area or nearby, and weld the plate after rolling.
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Anonymous users2024-02-047 days, that is, after the concrete strength comes up, but a earthwork excavation can not exceed the meter, which is convenient for anchor spraying between the piles.
Expert. As long as the concrete strength is established, it will be fine. In order to reasonably arrange the construction period, the sequence of earthwork excavation can be taken into account when arranging the piling line.
It is also possible to arrange the static load test of the pile foundation after the pile is driven, and then excavate after the test is qualified. The test pile can raise the elevation of the pile top to the original floor elevation, and the concrete strength is appropriately improved, which is constructed before other piles.
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Anonymous users2024-02-03After the construction of the pile foundation is completed, it is necessary to wait for the static consolidation of the pile body, and the pile foundation is tested before the earthwork excavation can be carried out after all the tests are qualified.
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Anonymous users2024-02-02Foundation pit enclosure and engineering pile construction can be carried out at the same time, especially the pile as an enclosure can be more at the same time, if the site is small, the enclosure can be done first, because the condition that earthwork excavation can start is that the enclosure reaches the design strength, and the curing period can be used to do the engineering pile after the enclosure is completed;
Earthwork excavation must be the last.
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Anonymous users2024-02-011. It is necessary to check the contract and whether the scope of the contract is clearly agreed in the contract. If the contract stipulates the construction of foundation earthwork and pile foundation, it shall belong to the construction party. If not, it will not belong to the construction party.
2. In addition, in order to control costs, developers often directly contract foundation earthwork, pile foundation, foundation treatment and other projects to units with construction qualifications for construction. After the general contractor enters the site, the preliminary project will be transferred to the general contractor. The general contractor signs a subcontract with the pre-unit, and the construction materials are summarized and compiled by the general contractor.
3. The cost of foundation earthwork and pile foundation and foundation treatment is not easy to determine the construction cost, and there are many unknown factors (such as: catacombs, dark rivers, geological mutations, etc.) It is easy to change, negotiate, and the amount of earthwork is not easy to calculate accurately. In order to effectively control unfavorable factors, some developers will directly organize the construction and management of foundation earthworks, and carry out professional subcontracting and direct management of pile foundation projects.
In addition, it often takes a long time to negotiate the project, delaying the best start time of the project. In order to ensure the construction period and improve the efficiency of negotiation, the developer will also carry out foundation excavation, pile foundation construction, foundation treatment, etc. in advance. 4. Not all developers will subcontract the project, depending on the situation.
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