After the pile foundation construction is completed, how to hand over the civil engineering unit

1. The handover pile work is generally carried out by the construction unit.

The organization, design or survey unit shall hand over the pile to the construction unit, and the construction unit shall be connected by the person in charge of the survey.

2. The handover pile should be carried out on site, and the handover information such as the pile layout plan, coordinates and elevation results table should be attached, and the handover procedures should be handled after the handover of the pile.

3. Check whether the pile position is intact when connecting the pile, whether the number of piles can meet the needs of positioning measurement, if the bridge is connected with the road under construction, at least one more coordinate point should be handed over to the bridge area at the connection, so as to facilitate joint testing with the road, and according to the on-site visibility situation, the relevant units are required to fill the pile encryption.

4. When the pile is connected, the pile position should be marked on the site and marked.

5. After the pile is connected, the pile position should be protected in time, and measures such as concrete reinforcement, well masonry, and nailing protective railings can be taken if necessary.

After the construction of the general pile is completed, the pile needs to be cut off, the site is cleaned up, the experiment is done to see if there is a broken pile and other phenomena, and then the delivery procedures are done (generally provide the delivery report form, a copy of the experimental results, the pile position coordinate table, the elevation table, and explain that the axis, elevation deviation value is within the allowable range), after the four-party acceptance (you, the supervision party, the owner, the other party) passes, the other party agrees to accept the handover and sign. If you do not agree to make rectification according to the reasonable requirements of the other party.

From another point of view, drawing review is a part of measuring the level of the design unit and whether the survey unit is responsible and professional. At the end of the process, the "Drawing Review Certificate" is issued on the construction site, and the pile foundation project can be started in advance, and all preparations can be made before the start of civil construction. Ten.

1. Plan and fill in the line inspection.

Mainly data, there is also the as-built drawing of the pile foundation project.

Then the cushion table is made, and then the valve plate is made.

The cap is the part where the pile is connected with the column or pier, and the cap links several or even a dozen piles together to form a pile foundation. The cap is divided into a high pile cap and a low pile cap: the low pile cap is generally buried in the soil or partially buried in the soil, and the high pile cap is generally exposed to the ground or water surface.

Due to the free length of the high pile cap, there is no support around it to bear the horizontal external force. The stress situation of the foundation pile is extremely unfavorable. The internal force and displacement of the pile are larger than those of the low pile cap under the action of the same horizontal external force, and its stability is therefore worse than that of the low pile cap.

It is necessary to make a cushion platform.

The cushion cap is a reinforced concrete platform that bears and distributes the load transmitted by the pier body, and is arranged at the top of the pile foundation to connect the reinforced concrete platform of each pile top. High pile caps are generally used in ports, wharves, marine engineering and bridge engineering. Low-pile caps are used for industrial and residential buildings.

The pile head extends into the cushion cap meter, and there are steel anchors into the cushion cap. Pillars or piers are built on the cushion cap to form a complete force transmission system.

In the high cushion cap structure, when the concrete pouring of the cushion cap and pier body is completed, the steel structure above the top surface of the cushion cap should be removed, and the safety of navigable ships shall not be endangered and the accumulation of floating objects during the flood period shall not be endangered.

After the pile is done, it is generally necessary to make a cushion cap. And then there's the valve plate, and you see if that's what it looks like. Of course, the part of the raft that is in contact with the ground should be cushioned first.

You have to look at your structural design drawing, after the pile foundation is completed, you need to do the pile integrity test, the vertical bearing capacity of the single pile test, and the pile foundation can be continued to be used only after the pile foundation is qualified. The raft foundation must be made of the cushion first, generally after the cushion is done waterproof waterproof protective layer (here pay attention to the calculation of the base elevation, so as not to do the waterproof protective layer elevation after the cushion is done) Binding the bottom plate reinforcement, column and shear wall reinforcement throwing chariot pouring the bottom plate concrete Binding column and shear wall reinforcement Supporting the template Pouring the column and shear wall concrete And so on The raft foundation must pay attention to the waterproof node treatment After pouring the belt is left.

After the construction of the pile foundation is completed, it depends on the specific situation and reads the structural design drawings in detail

Generally, the follow-up work should be excavated, and then the foundation pit support should be done around, and the pile foundation detection and drainage work should be considered at the same time. Such as cushioning, post-pouring belt, waterproof protective layer, waterproofing, raft foundation.

It is generally before the superstructure enters the site.

The question is not clear enough: who gives what to whom? (What is a stake handover?) ）

1. If it is a construction unit to construct the balance of the hole, there is no need to handle the handover work.

2. If it is not the same construction unit, of course, the project manager must be different. It is necessary to do the handover work of nanofiber. Specifically:

In terms of construction data, raw material retest report, small strain test report, static load test report, pile foundation division acceptance form (signed by 5 parties), etc., please ask the relevant personnel of the archives management to guide the site, and the final engineering data must be handed over to the archives. He has the right to speak. After the review, it will be handed over to the general contractor for safekeeping, and when the project is completed in the future, it will be handed over to the archives.

It is necessary to hand over the inspection batch data and the acceptance data of the distribution project, and the pile position in the cushion cap needs to be reviewed, and the large strain and small strain need to be done, and the test report needs to be handed over.