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1) Place the cap.
The short column backfill (to the elevation of the bottom of the beam) and compaction from the surface to the bottom of the beam are completed;
2) Pouring a layer of beams (screeds.
supporting formwork, tying steel bars, pouring);
3) Backfill.
and compaction (to the elevation of the bottom of the slab);
4) Pouring a layer of slabs (leveling layer, supporting formwork, tying steel bars, pouring).
Process flow 1) backfill (to the elevation of the bottom of the beam). The short column backfill (to the elevation of the bottom of the beam) and compact the short column from the cushion cap surface to the bottom of the beam is completed; The construction of the short column on the cushion cap is completed, the soil quality is inspected, the soil is layered, the soil is compacted, and the compactness is tested.
2) Pouring a layer of beams (leveling, supporting formwork, tying steel bars, pouring). Leveling layer (beam bottom) bullet column, beam position line binding beam reinforcement installation beam, column side formwork to do hidden inspection pouring backfill (to the bottom of the slab elevation below 50).
3) Dismantle the beam and column side formwork and clean up the soil quality to inspect the soil quality and layer the soil to be compacted and compacted in layers.
4) Pouring a layer of slabs (leveling, supporting formwork, tying steel bars, pouring). Base concrete leveling, building perimeter side formwork, binding plate reinforcement, binding negative moment reinforcement.
Do hidden inspection and pour m-slab concrete.
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The formwork support process for the construction of cast-in-place concrete beams and slabs of the frame structure must be carried out at the same time. Separating the two drawings into beams and slabs is not conducive to construction. Expressing beams and slabs in the same diagram can more clearly express the relationship between beams and slabs, which is conducive to construction.
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Wind and rain, what a nasty weather. For me, it's a fond memory. As far as the eye can see, the pear trees by the river are swaying in the wind.
The dancing figure is like a delicate girl. Trees, you know what? The river that flows under your feet has reached the sea; The flowers that bloomed beside you have withered away; Is it, is it old?
No, it doesn't. People, you.
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In the actual construction, the beams and slabs are generally poured at the same time, so that the construction is more convenient.
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It cannot be separated. The building formwork support system should support the vertical rod under the beam to meet the stability of the support system.
Technical index requirements for building formwork support system:
1. The structural support system uniformly adopts the steel pipe fastener scaffold support system (or the large mold system, wrist buckle scaffolding support system and other higher requirements of the support system), and the adjustable support is uniformly set at the top, and it is strictly forbidden to use the fastener reinforcement as the main force support component of the vertical load; The secondary beams of columns, walls and slab formwork are uniformly used with square steel pipes, and the main beams supported by slabs need to be spliced with shaped steel beams or two square steel pipes; The bottom and side of the beam are reinforced with wooden keels; The frame beam reinforcement must be reinforced by a special fixture, and the spacing is not more than 800mm, and it is strictly forbidden to use simple reinforcement measures such as step-by-step.
2.The main structure template requires the use of bamboo glued formwork (1200 2400 15mm), the column and wall formwork are closed with double-sided tape, and the joints of the flat formwork need to be closed with 50mm tape.
3.Before the construction of the formwork project, it is necessary to carefully analyze the structural construction drawings, formulate the support system erection and formwork matching plan, and report to the project department for approval before implementation. Before the construction of the structure, the site must first do the formwork support system, formwork construction model, experience can be implemented only after the experience is qualified, and the formwork must be numbered and used for turnover.
It is strictly forbidden to construct large machinery such as electrical documents on the structural work floor.
4.Skids and bases should be provided at the bottom of the steel pipe column. In order to expand the stress surface, when the underlying support system is erected, it is necessary to strictly control the reinforcement measures such as backfilling and tamping the substrate to ensure that it will not sink, and it is necessary to report to the special support plan for implementation after approval.
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No, the separation of beams and plates means that separate rods should be set up under the beams. Now many of the vertical rods of beams and plates are shared, which leads to the fact that the actual force of the vertical rod is not considered in the calculation, and the results of the calculation are not in line with reality. The separation of beam and plate means that the bottom of the beam should have its own upright rod stress system, but the upright rod should be all tied up with crossbars to meet the overall stability.
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No, because I don't know either.
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This construction method is feasible, especially suitable for cast-in-situ box girder, the general construction drawing design drawings will be explained, poured twice, and the horizontal construction joint should be left on the beam to 1 3 places of the beam plate joint, not at the beam plate joint. In the construction, attention should be paid to the first time to splash as little concrete as possible on the next pouring formwork.
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If there is no overall pouring, there will be drawbacks, the construction joints will seep water, and it will be very troublesome in the later stage.
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Floor slab reinforcement is divided into two types of reinforcement: bending type and detached type
Detachment type is the kind that is equipped with stress ribs at the bottom of the plate and negative reinforcement at the support. The stress bar and the negative reinforcement of the support are different reinforcements, which are more common in engineering.
The bending type refers to the kind that the stressed tendons bend up when they reach the bearing, which is rare now.
There are centralized annotations and in-situ annotations, see 03G101 atlas for details.
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Cast-in-place beams with beams copied from floor slabs, yes.
Attack T-beam, the upper flange part is a bai part of the beam, not a plate;
If the flange is poured separately from the web, the beam is poured separately, not the beam is separated from the plate, so it is impossible to separate the beam from the plate;
The beams are poured separately, that is, the beams are retained in the horizontal construction joints, GB50666-2011 article, the horizontal construction joints are retained on the vertical components such as walls and columns, the first article is to say that the construction joints of the beam, but the vertical construction joints should be retained;
Therefore, there is no provision that stipulates that the beam can be retained in horizontal construction joints;
Only when it is designed as a superimposed beam, it is possible to leave a horizontal construction joint on the beam web according to the special structure of the superimposed sample.
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It is best not to separate.
There is a clause on the concrete construction code that allows separate pouring, but other conditions must be met for separate pouring.
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It is generally separated, which is also more in line with the actual situation.
The column reinforcement connection is completed, and the lashing is completed.
Then tie the floor layout beams and plates, which is the right to two construction processes, and it should be done separately for inspection and approval. Moreover, your other steel bar processing and so on are also separately done inspection batches, and steel bar connections should generally be done separately inspection batches.
However, if there are not many column connections, it can also be done together with the reinforcement connections on the floor.
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You can make one layer at a time.
Integral pouring. Before the steel bar is concealed, it is uniformly inspected, so that it is generally a layer or a flow section for an inspection batch.
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1. First of all, it is necessary to confirm whether the concrete number of the beam and slab is consistent, and it is absolutely not possible if it is inconsistent;
2. Pouring separately in this way, it is equivalent to all beams having horizontal joints in the same section, and the 1 3 positions mentioned above refer to the vertical joints, not the same concept, for the principle of retention of the construction joints of the beam plate, there is no principle of setting up horizontal joints, which will affect the structural safety.
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