CN206625437U - A kind of building block water proof structure - Google Patents

Abstract

A waterproof masonry structure includes a beam positioned below an inner wall. A filler wall is located below the beam, with a gap between the filler wall and the beam. Multiple precast concrete blocks are placed within this gap. The lower end face of the beam is a higher, first-step surface on the side closest to the outer wall. The upper end face of each precast concrete block is a lower, second-step surface on the side closest to the outer wall. The first and second step surfaces interlock. One side of each precast concrete block has a protrusion, and the other side has a recess that mates with the protrusion. The gap between the first and second step surfaces and the gap between the protrusion and the recess is filled with micro-expansion cement mortar. The lower end face of the precast concrete block is fixedly connected to the filler wall by the filled micro-expansion cement mortar. This invention features a simple and practical structure, is easy to construct, avoids through-joints under the beam, and prevents mold growth on the inner wall.

Description

A block waterproof structure

technical field

The utility model relates to a block waterproof structure, which belongs to the field of construction engineering.

Background technique

At present, there are generally two construction methods between the beam and the infill wall built after the masonry: the first is to use top bricks to lay obliquely, and the second is to fill with micro-expanded fine stone concrete. At present, the first method The operation steps are to reserve a gap of about 200 mm on the top of the masonry, and then lay the sloping roof bricks after 7 days after the masonry project is completed. It is a plane, and when it is laid obliquely, it is 45° to 60° from the horizontal plane, and it is tightened block by block. The thickness of the mortar joint should be 10 mm, and it should be compacted with the bottom of the frame beam and filled with mortar. The position of the top brick should be reserved according to the modulus. , when the modulus is not suitable, it should be repaired with matching bricks. The second method is to reserve a gap of 30 to 50 mm on the top of the masonry, and fill it in two times. Remove the floating ash before the caulking, and support the formwork. For the first time, use C20 The fine stone micro-expansion concrete is filled, leaving 20 mm on both sides, and after the initial setting of the concrete, it is then compacted with cement mortar caulking.

The disadvantage of adopting the above prior art is: in the first way, the blocks need to be cut during masonry, and the blocks are easily damaged, which wastes materials. Because the oblique brick filling is not dense enough, the deformation modulus of the wall material is different from that of the concrete material, the filling wall is easy to separate from the bottom of the beam, and the top of the filling wall cracks, especially at the junction of the filling wall and the bottom of the beam after plastering. The exterior quality of the wall surface is poor, and the interior wall surface is prone to mildew. The key to the second method is that it needs a support template, which is not easy to operate. The construction steps of the above two methods are all relatively cumbersome, which increases the consumption of human resources.

Utility model content

The utility model proposes a new block waterproof structure for preventing cracks under beams, which is easy to construct, avoids cracks under beams, and prevents mildew on inner walls.

The technical scheme of the utility model is as follows:

A block waterproof structure, including a beam, the beam is arranged under the inner wall, a filling wall is arranged under the beam, there is a gap between the filling wall and the beam, and a plurality of prefabricated concrete blocks are arranged in the gap, and the beam The lower end surface is the first stepped surface with a higher step on the side near the outer wall; the upper end surface of the prefabricated concrete block is the second stepped surface with a lower step near the outer wall; the first stepped surface and the second stepped surface The stepped surfaces cooperate with each other; one side of the prefabricated concrete block is provided with a protrusion, and the other side is provided with a concave part matched with the protrusion; the gap between the first stepped surface and the second stepped surface is filled with micro-expansion cement mortar, The gap between the protrusion and the recess is filled with micro-expansion cement mortar, and the lower end surface of the concrete prefabricated block and the filling wall are fixedly connected by the filled micro-expansion cement mortar.

Wherein, the distance from the end surface of the filling wall to the lower end surface of the beam is 180-200mm; the height from the lower end surface of the prefabricated concrete block to the high step of the first stepped surface is 180-200mm.

Wherein, the height difference between the high step and the low step of the first stepped surface is 50 mm.

Wherein, the length of the protrusion is 50mm.

The utility model has the following beneficial effects:

1. The construction is simple and easy to operate, which can speed up the progress of the project, shorten the construction period, improve the construction quality and reduce the construction cost;

2. The factory production of masonry concrete prefabricated blocks has precise dimensions and high product quality;

3. The existence of structural height difference can effectively prevent water seepage and ensure the strength.

Description of drawings

Fig. 1 is a schematic diagram of the front structure of the utility model;

Fig. 2 is a schematic view of the side structure of the utility model;

Fig. 3 is a three-dimensional perspective view of a concrete prefabricated block in the utility model;

The reference signs in the figure represent:

1-concrete prefabricated block, 2-micro-expansion cement mortar, 3-filled wall, 4-beam, 5-first step surface, 6-second step surface, 7-protrusion, 8-recess.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1 to Fig. 3, a block waterproof structure includes a beam 4, the beam 4 is arranged under the inner wall surface, a filling wall 3 is arranged under the beam 4, and there is a gap between the filling wall 3 and the beam 4, A plurality of prefabricated concrete blocks 1 are arranged in the gap, the lower end surface of the beam 4 is the first stepped surface 5 of a higher step on the side close to the outer wall; the upper end surface of the prefabricated concrete block 1 is the side close to the outer wall Low-level second stepped surface 6; the first stepped surface 5 and the second stepped surface 6 cooperate with each other; one side of the prefabricated concrete block 1 is provided with a protrusion 7, and the other side is provided with a protrusion that matches the protrusion 7 Recess 8; the gap between the first step surface 5 and the second step surface 6 is filled with micro-expansion cement mortar 2, the gap between the protrusion 7 and the recess 8 is filled with micro-expansion cement mortar 2, and the concrete prefabricated block 1 The end face and the filling wall 3 are fixedly connected by filling micro-expansion cement mortar 2 .

Referring to Fig. 1, the distance from the upper end surface of the filling wall 3 to the lower end surface of the beam 4 is 180-200mm; the height from the lower end surface of the prefabricated concrete block 1 to the first step surface 5 is 180-200mm, which is convenient for placing the concrete The prefabricated block 1 is put into the gap between the filling wall 3 and the beam 4. If the height of the gap is too high, it will increase the difficulty of construction and waste a lot of time. If the height of the gap is too low, it will cause inconvenient filling and make the waterproof structure under the beam less effective.

Referring to Fig. 1, the height difference between the high step and the low step of the first stepped surface 5 is 50mm, which is convenient to cooperate with the second stepped surface 6 of the concrete prefabricated block 1; the height of the second stepped surface 6 of the concrete prefabricated block 1 The difference is 50mm, which can effectively prevent rainwater from entering the inner wall.

Referring to Fig. 3, the upper end surface of the prefabricated concrete block 1 is the second stepped surface 6, which has a structural height difference and has a waterproof function. The space is denser, avoiding the formation of joints, factory production is adopted, and the size of various concrete prefabricated blocks 1 can be designed according to needs, and the concrete prefabricated blocks 1 are used instead of brick blocks, and the strength is guaranteed.

Referring to Fig. 3, the length of the protrusion 7 is 50mm, too short length is not good for avoiding the formation of through joints, and too long length will affect the difficulty of masonry.

Work process of the present utility model is as follows:

First build the beam 4, the lower end of the beam 4 is built into the first stepped surface 5, and the high-level side faces the outer wall, and then the filling wall 3 is built with bricks, and the masonry stops when the distance from the bottom of the beam 4 is 180-200mm For masonry, after the settlement has stabilized for seven days, the pre-produced concrete prefabricated block 1 is stuffed into the gap between the filling wall 3 and the beam 4, and the lower level of the second stepped surface 6 of the concrete prefabricated block 1 needs to be The side faces the outer wall, and the left and right parts beyond the scope of the wall should be cut off, and then the precast concrete block 1 is built with micro-expansion cement mortar 2, so that an effective connection is formed between the filling wall 3, the precast concrete block 1 and the beam 4 .

Because the upper end surface of the concrete prefabricated block 1 and the lower end surface of the beam 4 are stepped surfaces, there is a difference in height and structure. When there is rain on the outer wall surface, because the first stepped surface 5 of the concrete prefabricated block 1 is relatively low at one end of the outer wall surface , it is difficult for rainwater to overcome the gravity to enter the inner wall surface to achieve the effect of waterproofing. The concavo-convex cooperation of the side of the adjacent prefabricated concrete block 1 avoids the generation of through joints, so that the beam 4 and the infill wall 3 are more closely combined, and at the same time avoid The deflection of the frame structure causes the negative bending moment of the beam 4 to change the stress state of the frame structure, causing potential safety hazards and avoiding cracking of the infill wall 3 due to the compression of the deflection of the beam 4 .

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (4)

1. A kind of 1. building block water proof structure, it is characterised in that：Including beam（4）, the beam（4）It is arranged on below inner wall surface, beam（4）'s Lower section is provided with filling wall（3）, fill wall（3）With beam（4）Between have space, multiple concrete prefabricated building blocks are provided with space （1）, beam（4）Lower surface for outer metope side high-order the first cascaded surface（5）；Concrete prefabricated building block（1）Upper end Face is the second cascaded surface of the side low order close to wall face（6）；First cascaded surface（5）With the second cascaded surface（6）Mutually Coordinate；Concrete prefabricated building block（1）One side is provided with projection（7）, another side is provided with and projection（7）The recess being engaged （8）；First cascaded surface（5）With the second cascaded surface（6）Between gap filling micro-expansion cement mortar（2）, it is raised（7）With Recess（8）Between gap filling micro-expansion cement mortar（2）, concrete prefabricated building block（1）Lower surface and filling wall（3）Between Pass through the micro-expansion cement mortar of filling（2）It is fixedly connected.
2. A kind of 2. building block water proof structure according to claim 1, it is characterised in that：The filling wall（3）Upper surface is to beam （4）The distance of lower surface is 180-200mm；The concrete precast block（1）Lower surface to the first cascaded surface（5）The height of high-order Spend for 180-200mm.
3. A kind of 3. building block water proof structure according to claim 1, it is characterised in that：First cascaded surface（5）High-order Difference in height with low order is 50mm.
4. A kind of 4. building block water proof structure according to claim 1, it is characterised in that：The projection（7）Length is 50mm.