How to deal with the connection between the wall under the window and the wall on both sides so that

The doors and windows are filled with rock wool between the walls, and the outer layer is smoothed with cement, and then wallpaper or paint is pasted. This treatment is caused by. The doors, windows and walls are sealed with acrylic acid sealant.

If you want to deal with the connection at this location, you generally need to use a special thing or use some of this, and it is best to use some other ones to contact him underneath when you pour, so that you can do it.

That is, when you are exchanging, you have to pay attention to its symmetry, you can't be fast or slow, you have to adjust the appropriate angle and your bearing.

This reinforcement treatment, so that I can risk this thing, and it is very safe and effective.

No one grabbed the junction we can still deal with it so that his watering does not bubble up, this is still the foundation has been laid, now,

The treatment of the situation for these two days can be done by filling the foam.

How can the money junction be leveraged in one step? Of course, you have to balance it.

The junction of the wall under the window and the wall on both sides. It must be clamped securely with a splint clamp. Only then can we not pour the concrete to the top.

How to deal with the junction of the walls on both sides of the wall so that it can be tamped and not blocked from above.

How to deal with the connection between the wall under the window and the wall on both sides so that it does not rise up? This needs to be studied to deal with.

Strengthen the connection with the walls on both sides, how to deal with it, how to avoid going up, if you want to take something, let him go.

How to deal with the connection between the lower cavity of the bed and the two sides so that it can rise up from time to time when the power is handed over.

1. The construction joints on the stairs should be left in 1 3 places of the tread board.

The concrete of the staircase should be poured continuously, if it is a multi-storey staircase, and the upper layer is a cast-in-place floor slab and has not been poured, the construction joint can be retained; It should be left in the middle of the staircase 1 3 parts, but it should be noted that the joint surface should be diagonally perpendicular to the direction of the stair axis.

2. The connection method of the construction joint should meet the design requirements. When there is no specific requirement in the design, for plain concrete structure, the connecting reinforcement of diameter not less than 16mm should be buried at the construction joint. Connecting steel bar embedding depth and exposed length should not be less than 30d of steel bar diameter, spacing is not more than 20cm, when using light round steel bar, both ends should be provided with semicircular standard hooks, when using ribbed steel bars can not be provided with hooks.

According to the provisions of the specification article "it is advisable to leave it in the part of the structure that is less shear and convenient for construction", it should generally be left in the position of three steps up or three steps down the stair step. In the cast-in-place concrete structure, the walls on both sides of the stairwell are mostly cast-in-place concrete walls, and the staircase and the wall can not be constructed at the same time, which brings difficulties to the retention of the staircase construction joint. The following points are put forward for the retention of staircase construction joints:

One. If the frame structure or the partition wall on both sides of the stairwell is built, the stair construction joint should be left at the upper or lower three steps of the stair tread according to the requirements of the code.

Two. When the stairwell on both sides is a cast-in-place concrete wall, the construction joint of the staircase should put half of the stair beam, that is, all the 1 3 to 1 2 places of the stair beam and the rest platform, all set aside without pouring concrete, and the specific requirements are:

1.When the concrete is poured on the lower shear wall, the beam socket of the stair beam should be left on the wall of the upper running side (see Figure 1).

2.When pouring concrete down the staircase, the stair beam of the rest platform is only poured to half, and the part of the stair beam is not poured, and the construction joint (see Fig. 1) is also left in the 1 3-1 2 places of the rest platform on the side of the staircase.

3.Do not pour concrete.

4.When the concrete is poured on the floor, the foam block must be plugged into the bearing of the shear wall to leave the beam socket at the support of the shear wall.

5.When running the stair formwork, the surface of the construction joints at the stair beam, rest platform and stair beam support should be chiseled and cleaned to expose the stones.

6.When the concrete is poured on the stairs, the joint is watered and wet, and the next part is finely compacted with the concrete with the stone-free mortar to form a whole.

Three. Three. If it is treated as a superimposed beam, the beam is hit to the bottom of the rest platform or the bottom of the floor slab. This practice must be handled strictly in accordance with the requirements of the superimposed surface.

Four. Four. In the slab staircase, when the tread is supported on the shear wall on both sides as a stressed plate, the construction joint can be thrown at any position parallel to the tread plate.

When the concrete is poured, the construction joint of the staircase should be left in the middle of the length of the inclined plate within the range of 1 3, and the chariot should be perpendicular to the formwork surface.

The staircase is composed of beams and plates, and the requirements for retention of construction joints are standardized: for large-area beams connected with the plate as a whole, the construction joints should be left at 20 30mm below the bottom surface of the plate, and when there is a beam bracket under the slab, it should be retained in the lower part of the beam bracket; For the one-way plate with a length and width ratio greater than 2:1, the construction joint should be left in any position parallel to the direction of the short side of the board, and the construction joint should be vertically left and cannot be made into an oblique slab.

When the concrete is poured, the construction joint of the staircase should be left at the length 1 3 position of the inclined plate.

You don't have to do a chiseling!

In principle, at the interface of the front and back two pouring concrete, the connection effect of the rough surface is better than that of the smooth surface.

In the actual construction operation, generally in the shear wall, the top of the column concrete pouring vibrating rod after the next leveling process, with a wooden trowel for brushing treatment, concrete before the final setting is not calendered, the natural formation of the rough surface, to avoid the concrete after solidification, can save labor, time-saving.

It is like this, it is not necessary to do chiseling treatment, but it can not be flat, after you pour concrete, there is a leveling process, in the leveling process, pounding, it is avoided to chisel after the concrete is solidified, so that you can save labor and time.

The construction joints of construction pouring must be chiseled, which is the existence of floating slurry in the upper part during construction, and the reason that the coarse aggregate is not dense and so on, so it must be chiseled and cleaned.

The dark column is set in the construction drawing, but the actual construction is not used, and the shear strength of the shear wall must be affected due to the influence of the concentrated load of the frame beam. If you are a high-rise with a constrained edge in the lower part, it must be reinforced, such as in the upper part can be reviewed by design calculation, and the strength can still be met without reinforcement. The reinforcement method generally uses pasted steel plates, which also requires the design department to issue change information.

Concrete construction joints should be treated as follows when pouring:

1. Before pouring concrete, it is advisable to brush a layer of cement slurry (can be mixed with an appropriate amount of interface agent) at the construction joint or pave a layer of cement mortar that is exactly the same in the concrete;

2. If the concrete at the construction joint has been hardened before false pouring, the cement film and loose stones and the weak concrete layer should be removed, and fully moistened and rinsed, and no water should be accumulated;

3. The poured concrete should be carefully compacted to make the new and old concrete closely combined;

4. Note that when pouring concrete at the construction joint, its compressive strength should not be less.

That's the way it is usual.

1. Clean the surface of the concrete and rinse it with water.

2. Brush with 1 layer of concrete interface agent.

3. Scraping layer cement slurry.

Solution:

1. The position of the construction joint should be set in the part where the shear force of the structure is small and convenient for construction, and the following provisions should be met: the column should be left with horizontal joints, and the beams, plates, and walls should be left with vertical joints.

1) The construction joint should be left on the top surface of the foundation, below the corbel of the beam or crane beam, above the crane beam, and below the column cap of the beamless floor slab.

2) For the large-section beam that is connected with the floor slab, the construction joint should be left at 20mm 30 mm below the bottom surface of the slab. When there is a beam bracket under the slab, it is left in the lower part of the beam bracket.

3) For one-way slabs, the construction joints should be left at any position parallel to the short side of the slab.

4) The floor slab with primary and secondary beams should be poured in the direction of the secondary beam, and the construction joint should be left in the range of 1 3 in the middle of the span of the secondary beam.

5) the construction joint on the wall should be left in the range of the door opening lintel span 1 3, and can also be left at the junction of the longitudinal and horizontal wall.

6) The construction joints on the stairs should be left in 1 3 places of the tread board.

7) The construction joints of the pool wall should be left on the vertical wall 200 mm and 500 mm higher than the surface of the bottom plate.

8) The position of the construction joints of two-way stressed floor slabs, large-volume concrete, arches, shells, silos, equipment foundations, multi-layer rigid frames and other complex structures should be set according to the design requirements.

After the final setting of concrete, the baffle is removed, the surface is chiseled with an axe or a steel rod, and the loose stone is cleaned up, the concrete strength is very low at this time, and the depth of the chisel is 20 30mm is easier, when the concrete is poured twice, the seam surface is washed clean with pressure water in advance, and the cement slurry is brushed while pouring, so as to enhance the bite force.

The steel wire mesh is also not a big deal and does not affect the quality of the structure.

The specification requirements are as follows:

1. When the window width is 900mm, the top height is 80mm, when the window width is 900mm, the top height is 100mm, if the local standard clearly requires, it shall be implemented in accordance with the local standard.

2. When the width of the window opening is 900mm, the length of the two ends of the window sill pressing the roof beam extending into the wall is l 400mm, and when the width of the window opening is 900mm, the length of the two ends of the window sill pressing the top beam extending into the wall is l 240mm (this is the regulation of Shenzhen, and other regions should refer to the local norms and standards).

3, according to the design window sill height minus the pressure top beam height is the masonry height of the window sill, the masonry above the window sill should be continued after the window sill top construction is completed, and the masonry is not allowed to leave a notch at the window sill beam position;

4. The longitudinal reinforcement of the window sill pressing the roof beam should be located in the upper position of the pressing roof beam, the thickness of the protective layer should be controlled at 25mm, and the longitudinal reinforcement should be firmly tied with the hook.

5. The formwork should be supported according to the control elevation line on the wall to control the height of the top surface.

6. The base layer is watered and moist before the concrete pouring of the window sill pressing the roof beam, and the concrete strength grade is not less than C20, and the concrete pouring must be vibrated and compacted.

7. The top surface of the window sill pressing the top beam should be smoothed and compacted, and the elevation of the top surface must be controlled accurately. The top surface of the external window sill pressing the top beam should be found from the inside to the outside according to the slope of 6%.

This is according to the provisions of the Code for the Design of Masonry Structures GB50003-2011, which belongs to the design code. There are no such provisions in the construction code.

The main purpose of this design is to facilitate the installation of windows in the construction of small blocks and lightweight walls. The red brick wall can be installed directly because of its high strength, so there is no need to do concrete roofing, while the material strength of small blocks and lightweight walls is low, so it is impossible to directly install windows, so it is necessary to add a concrete roof.

It is used for the fixing of window frames, so it is necessary to press the top of concrete, and the construction requirements in the masonry design code.

This is not the norm, it is the practice of preventing common quality problems in the quality prevention and control manual, which can change the stress characteristics of the wall and control the occurrence of cracks. For example, the Jiangsu Provincial Quality Common Disease Prevention and Control Manual requires that the first layer and the top layer be set up to penetrate the top!

This is the article of GB50666-2011 "Code for Construction of Concrete Structure Engineering".

It can be treated by lashing lap joint, but it is better to do a primary mechanical connection, because the primary mechanical connection does not need to consider the position of the lap and the number of laps.

Just connect the short ones first.

According to the requirements of Chapter 8 of GB 50010-2010 of the Code for Design of Concrete Structures.