Expansion joint structure for basement outer wall and top plate

Abstract

The utility model provides an expansion joint structure for basement exterior wall and top plate, including: basement exterior wall, top plate, stand column, two top surface beam and U-shaped connecting plate, the top plate, two top surface beam and U-shaped connecting plate form expansion joint, the expansion joint is filled with coarse sand, the coarse sand is embedded with drain pipe, the both ends of drain pipe pass through the U-shaped convex part, and the both ends of drain pipe pass through the U-shaped convex part. And a plurality of through holes are formed in the pipe wall of the drainage pipe. According to the utility model, the influence of temperature stress on an ultra-long structure is avoided, and the ultra-long basement structure is not cracked due to the temperature stress any more. Meanwhile, the temperature stress of the super-long basement structure is not resisted by steel bars, so that the steel bars are saved, and good economic benefits are brought. In addition, the drainage pipe embedded in the expansion joint can effectively drain water infiltrating into the expansion joint from the earth surface, damage to a basement building waterproof layer and a concrete structure caused by long-term water accumulation in the expansion joint is avoided, and it is guaranteed that water seepage of a basement caused by long-term water accumulation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of building structure design, and more specifically relates to an expansion joint structure used for the outer wall and top plate of a basement. Background Art

[0002] As social economy continues to develop, people's living needs become more diversified, and urban land is becoming increasingly scarce, building basements has become a normal practice. Ordinary fully buried basements are all located under the covering soil and are not sensitive to temperature stress. If expansion joints are set, water leakage often occurs at the joints because the construction quality is difficult to ensure and the building materials are prone to aging under the action of water and soil. Therefore, even if the structure length exceeds the requirements of the specification, temperature expansion joints are usually not set.

[0003] However, some basements are semi-buried, open on one side, open on two sides, etc. At this time, since part of the basement is outdoors, the impact of temperature stress on the structure cannot be ignored. If engineering measures are not taken to solve the impact of temperature stress, the structure will easily deform and crack under the repeated action of temperature stress, causing leakage, thus affecting the normal use of the building.

[0004] If structural steel bars are used to resist temperature stress, the reinforcement of the structure will increase significantly, which is very uneconomical. The common expansion joint concrete structure of the basement is detached, and the middle is filled with rubber water stop and sealing grease. Under the repeated action of groundwater, the rubber water stop and sealing grease are prone to aging and failure. Their durability is far less than that of concrete structures, and basement leakage often occurs. Utility Model Content

[0005] The utility model aims to provide an expansion joint structure for the outer wall and top plate of a basement to solve at least one of the above problems.

[0006] To achieve the above object, the utility model provides an expansion joint structure for basement exterior walls and top plates, comprising:

[0007] The outer wall of the basement has a U-shaped protrusion symmetrically provided on two opposite sides;

[0008] A top plate is laid above the outer wall of the basement; the top plate is disconnected at the expansion joint; the expansion joint is arranged at the U-shaped outer protrusion;

[0009] A column is arranged on the basement floor for supporting the top plate; at least four columns are provided, and a plurality of columns are symmetrically arranged on both sides of the expansion joint; there is a gap between the column and the outer wall of the basement;

[0010] Two top beams are symmetrically arranged on both sides of the expansion joint, both ends of the top beams are connected to the columns, and the top beams are used to support the top plate; and,

[0011] A U-shaped connecting plate, the two ends of which are respectively connected to the lower sides of the two top beams;

[0012] The expansion joint is formed between the top plate, the two top beams and the U-shaped connecting plate. The expansion joint is filled with coarse sand. A drainage pipe is buried in the coarse sand. Both ends of the drainage pipe are inserted into the U-shaped outer protrusion. A plurality of through holes are provided on the pipe wall of the drainage pipe.

[0013] Furthermore, the upper end surface of the expansion joint is lower than the upper end surface of the top plate, and the particle size of the coarse sand is between 1 and 5 mm.

[0014] Furthermore, the U-shaped connecting plate is a concrete casting plate, and vertical steel bars and horizontal steel bars are staggered in the U-shaped connecting plate, and one end of the vertical steel bar is anchored in the top beam.

[0015] Furthermore, the drainage pipe is provided with a slope, and slopes toward the outer wall side of the basement.

[0016] Furthermore, the slope of the drainage pipe is 2-5%.

[0017] Furthermore, the outer periphery of the drainage pipe is covered with a water-filtering geotextile.

[0018] Furthermore, a soft water-permeable pipe having the same length as the drain pipe is provided in the drain pipe.

[0019] Furthermore, a wall-penetrating waterproof sleeve is provided in the U-shaped outer protrusion, and both ends of the drainage pipe are inserted into the wall-penetrating waterproof sleeve.

[0020] Furthermore, the width of the expansion joint is not less than 200 mm.

[0021] Furthermore, the distance between the basement outer wall and the column is not less than 600 mm.

[0022] Compared with the prior art, the utility model has the following technical effects:

[0023] The utility model is a expansion joint structure for the outer wall and top plate of the basement. By setting a U-shaped outer protrusion on the outer wall of the basement, and setting columns and top beams on both sides of the expansion joint, the outer wall of the basement is not connected to the columns and top beam, that is, there is a gap between the outer wall of the basement and the columns, so that the outer wall of the basement and the top plate are no longer continuous on the plane at the expansion joint but have a turning point. In this way, during the process of temperature stress transmission through the plane, the temperature stress is released at the expansion joint, avoiding the influence of temperature stress on the super-long structure, and the super-long basement structure will no longer crack due to temperature stress. At the same time, the utility model does not use steel bars to resist the temperature stress of the super-long basement structure, thereby saving steel bars and bringing good economic benefits. In addition, the drainage pipe buried in the expansion joint can effectively discharge the water that infiltrates from the surface into the expansion joint, avoiding the damage of the waterproof layer and concrete structure of the basement building caused by long-term water accumulation in the expansion joint, and ensuring that the basement will not seep due to long-term water accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A top view of an expansion joint structure for a basement exterior wall and a top plate provided by an embodiment of the utility model (only half of the overall structure is shown in the figure, and the symmetrical structure of the other half (or the lower half) is not drawn);

[0026] Figure 2 A schematic structural cross-sectional view in the vertical direction of an expansion joint structure for a basement exterior wall and a top plate provided by an embodiment of the utility model (aa);

[0027] Figure 3 A side view (bb) of an expansion joint structure for a basement exterior wall and a top plate provided in an embodiment of the utility model.

[0028] Among them, the reference numerals in the figure are:

[0029] 1. Basement exterior wall, 101, U-shaped protrusion, 2. Top beam, 3, column, 4, wall-penetrating waterproof casing, 5, top plate, 6, U-shaped connecting plate, 7. Drain pipe, 8. Soft permeable pipe, 9. Coarse sand, 10, vertical steel bars, 11. Basement floor, 12. Horizontal steel bars, L1, distance from basement exterior wall to column, L2, width of expansion joint, L3, distance from U-shaped connecting plate to bottom of top beam, B1, thickness of U-shaped connecting plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In the present invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can all represent: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple, respectively.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0035] See also Figure 1-Figure 3 Now, an expansion joint structure for the outer wall and top plate of a basement provided by an embodiment of the utility model is described.

[0036] In one embodiment of the utility model, an expansion joint structure for a basement exterior wall and a top plate of the utility model embodiment includes a basement exterior wall 1, a top plate 5, columns 3, two top beams 2 and a U-shaped connecting plate 6. A U-shaped protrusion 101 is symmetrically provided on opposite sides of the basement outer wall 1; the top plate 5, that is, the plate on the top surface of the basement, is laid above the basement outer wall 1; the top plate 5 is disconnected at the expansion joint; the expansion joint is provided at the U-shaped protrusion 101; the column 3 is provided on the basement bottom plate 11, and is used to support the top plate 5; there are at least four columns 3, and the plurality of columns 3 are symmetrically provided on both sides of the expansion joint, and there is a gap between the columns 3 and the basement outer wall 1, that is, the columns 3 are not connected to the basement outer wall 1; two top beams 2 are symmetrically provided on both sides of the expansion joint, and the two ends of the top beam 2 are connected to the columns 3, and the top beam 2 is used to support the top plate 5; the two ends of the U-shaped connecting plate 6 are respectively connected to the lower sides of the two top beams 2, that is, the U-shaped connecting plate 6 is hung below the lower side of the top beam 2, as shown in FIG. Figure 3 As shown; an expansion joint is formed between the top plate 5, the two top beams 2 and the U-shaped connecting plate 6, the expansion joint is filled with coarse sand 9, a drainage pipe 7 is buried in the coarse sand 9, and both ends of the drainage pipe 7 are passed through the U-shaped outer convex portion 101, as shown Figure 1 As shown, a plurality of through holes are provided on the wall of the drain pipe 7 for draining water.

[0037] In one embodiment of the present invention, four columns 3 are provided, and the four columns 3 are symmetrically arranged on both sides of the expansion joint. Figure 1 As shown, Figure 1 Only the upper structure is shown, and the lower structure is symmetrical to the upper structure. Two top beams 2 are symmetrically arranged on both sides of the expansion joint, and both ends of each top beam 2 are connected to the columns 3 on both sides thereof.

[0038] The technical principle of the expansion joint structure for the basement outer wall and top plate of the embodiment of the utility model is as follows: by setting a U-shaped outer protrusion 101 on the basement outer wall 1, and setting columns 3 and top beams 2 on both sides of the expansion joint, and the basement outer wall 1 is not connected to the columns 3 and the top beam 2, that is, there is a gap between the basement outer wall 1 and the columns 3, so that the basement outer wall 1 and the top plate 5 are no longer continuous on the plane at the expansion joint but have a turning point, so that in the process of temperature stress transmission through the plane, the temperature stress is released at the expansion joint, avoiding the influence of temperature stress on the super-long structure, and the super-long basement structure will no longer crack due to temperature stress. At the same time, the expansion joint structure of the embodiment of the utility model does not use steel bars to resist the temperature stress of the super-long basement structure, thereby saving steel bars and bringing good economic benefits. In addition, the drainage pipe 7 buried in the expansion joint can effectively discharge the water that infiltrates from the surface to the expansion joint, avoiding the damage of the waterproof layer and concrete structure of the basement building caused by long-term water accumulation in the expansion joint, and ensuring that the basement will not seep due to long-term water accumulation.

[0039] An expansion joint structure for a basement outer wall and a top plate in an embodiment of the utility model is suitable for an extra-long semi-buried basement or a partially open basement. An expansion joint is arranged on a top plate 5 at intervals. The top plate 5 is disconnected at the expansion joint, and a plurality of columns 3 and a double top beam 2 are arranged at the position. At the same time, a U-shaped outer protrusion 101 is arranged on the basement outer wall 1 at a position corresponding to the expansion joint.

[0040] In the embodiment of the utility model, in order to facilitate the embedding of the drainage pipe 7 in the expansion joint and fully release the temperature stress caused by the excessive length of the structure, the width of the expansion joint is usually not less than 200mm. In addition, the basement outer wall 1 is a reinforced concrete structure, and a U-shaped outer protrusion 101 is designed at the expansion joint. The basement outer wall 1 is not connected to the concrete column 3 and the concrete top beam 2. In order to facilitate the construction personnel to install and remove the template, the distance between the basement outer wall 1 and the concrete column 3 is not less than 600mm.

[0041] Furthermore, the drain pipe 7 of the embodiment of the utility model can be a PVC drainage flower pipe, and the drain pipe 7 is buried at the bottom of the expansion joint, such as Figure 2 , Figure 3 As shown, coarse sand 9 is filled around the drain pipe 7. The diameter of the drain pipe 7 is usually 50mm-100mm, and the wall thickness is between 2mm and 6mm. Usually, the larger diameter drain pipe 7 should also choose a thicker wall thickness. Drill holes are evenly arranged in a plum blossom pattern on the drain pipe 7, with a hole diameter between 4mm and 8mm. Four holes can be arranged along the circumference of the pipe. The longitudinal spacing of the holes is between 200mm and 400mm, and generally should not be greater than 500mm, so as not to affect the drainage effect. The drain pipe 7 should be connected to the outdoor drain pipe or water collection well after passing through the basement outer wall 1.

[0042] Furthermore, the upper end surface of the expansion joint of the embodiment of the utility model is lower than the upper end surface of the top plate 5, so as to facilitate the surface water to flow into the expansion joint and be discharged; the particle size of the coarse sand 9 is between 1 and 5 mm, and preferably, the mass of particles with a particle size of 1 mm to 2 mm should account for 25% to 50% of the total mass, so that the coarse sand layer after laying has good water filtration and drainage effects. The coarse sand 9 is filled in the expansion joint, which can prevent the covering soil of the basement top plate 5 from falling into the expansion joint, and at the same time can discharge the surface water that penetrates from the basement top plate 5 into the expansion joint.

[0043] Furthermore, a through-wall waterproof sleeve 4 is provided in the U-shaped outer protrusion 101 of the embodiment of the utility model, and the two ends of the drain pipe 7 are inserted into the through-wall waterproof sleeve 4. The through-wall waterproof sleeve 4 is pre-buried in the middle of the basement outer wall 1 when the steel bars of the basement outer wall 1 are tied. The debris, rust, etc. in the sleeve are removed and two coats of anti-rust paint are applied. After the PVC drain pipe 7 passes through, the gap between the pipe and the sleeve is sealed with asbestos cement, hemp, ointment, etc. The through-wall waterproof sleeve 4 is used on the basement outer wall 1 to facilitate the drain pipe 7 to pass through the basement outer wall 1 without affecting the structure of the basement outer wall 1. The through-wall waterproof sleeve 4 can be made of cast iron or non-metallic pipe. Generally, a rigid waterproof sleeve can be used. Its diameter is preferably 100 mm larger than the diameter of the drain pipe 7. It should be pre-buried in the basement outer wall 1.

[0044] Furthermore, the drain pipe 7 of the embodiment of the utility model is provided with a slope, and slopes toward the side of the basement outer wall 1. That is, the drain pipe 7 is buried in the expansion joint at a certain inclination angle to facilitate the rapid discharge of water in the expansion joint. Preferably, the slope of the drain pipe 7 is 2-5%, for example, the slope is 3%.

[0045] Furthermore, the outer periphery of the drainage pipe 7 of the embodiment of the utility model is covered with a water-filtering geotextile to isolate and filter sand particles and drain water. Woven geotextile and non-woven filament geotextile can be used, with a specification of 100g / m 2 -600 g / m 2 It can be selected arbitrarily, preferably, the number of layers of geotextile wrapped on the PVC drainage pipe 7 is not less than 3 layers.

[0046] Furthermore, a soft water-permeable pipe 8 of the same length as the drain pipe 7 is provided inside the drain pipe 7 of the utility model embodiment. The soft water-permeable pipe 8 is a new type of pipe material with the function of filtering (draining) water. It is made of polymer materials (such as high-density polyethylene, polyvinyl chloride, etc.) as the main material, and is made into a soft tubular structure with a filter net attached to the inner wall. The diameter of the soft water-permeable pipe 8 is 10mm to 20mm smaller than that of the drain pipe 7. It is inserted into the drain pipe 7 to play the role of filtering and draining water.

[0047] The soft permeable pipe 8 should be laid tight to avoid wrinkles, twists or potholes. The soft permeable pipe 8 is spliced ​​longitudinally by overlapping, and the overlapping width is not less than 30 cm. The holes of the PVC drain pipe 7 should be pre-drilled in the factory. After cutting the geotextile, wrap the geotextile around the drain pipe 7. It can be spirally wrapped or longitudinally stretched to ensure that the geotextile can completely wrap the drain pipe 7 without affecting the normal operation of the drain pipe 7.

[0048] The expansion joint structure of the utility model embodiment is provided with a PVC drainage pipe 7, a soft permeable pipe 8, coarse sand 9, etc. in the expansion joint, and a through-wall waterproof sleeve 4 is arranged at the position where the drainage pipe 7 passes through the basement outer wall 1, and the water infiltrated into the expansion joint from the ground surface is discharged to the outside through the drainage pipe 7, thereby avoiding the damage of the building materials to the long-term accumulation of water in the expansion joint, avoiding the leakage at the U-shaped connecting plate 6, and ensuring the normal use of the building.

[0049] Furthermore, the U-shaped connecting plate 6 of the embodiment of the utility model is a concrete casting plate, and vertical steel bars 10 and horizontal steel bars 12 are staggered in the U-shaped connecting plate 6, and one end of the vertical steel bar 10 is anchored in the top beam 2, such as Figure 3 As shown. The U-shaped connecting plate 6 is located at the lower part of the concrete top beam 2, that is, it is hung below the lower side of the top beam 2. It is the same width as the expansion joint and is not less than 200mm. The thickness of the U-shaped connecting plate 6 can be 100mm. Its height under the beam is 300mm to 400mm. It should not be too high to avoid affecting the net height of the building below and affecting its use. The concrete strength of the U-shaped connecting plate 6 is one level higher than that of the concrete grade of the top beam 2 and is not less than C35, that is, the compressive strength is not less than 16.7 MPa, and it is cast with micro-expansion concrete.

[0050] The vertical steel bars 10 are anchored into the basement top beam 2 by no less than 40 times the diameter of the steel bars. The vertical steel bars 10 can be made of steel bars with a diameter of 10 to 14 mm, and the spacing is usually 200 mm. The horizontal steel bars 12 can be made of steel bars with a diameter of 8 to 10 mm, and the spacing is usually 200 mm. The steel bars are all HRB400 grade cold-rolled ribbed steel bars. The horizontal steel bars 12 are arranged on the inner side of the vertical steel bars 10 and are tied together with the vertical steel bars 10 by steel wire.

[0051] The expansion joint structure of the embodiment of the utility model avoids the problem of basement leakage caused by material aging under the action of water and soil by designing a U-shaped connecting plate 6 made of concrete material to connect the structures on both sides of the expansion joint at the expansion joint, instead of using traditional rubber water stop and sealing paste to fill the joint.

[0052] It should be noted that the basement concrete columns 3, the concrete top beams 2 and the steel bars in the basement outer wall 1 are not shown in the drawings and can be arranged in a conventional manner.

[0053] Since the basement exterior wall 1 of the embodiment of the utility model is separated from the basement columns 3 and the basement top beam 2 at the expansion joint, in order to release the temperature stress, the basement exterior wall 1 should be poured 60 days after the basement columns 3 and the basement top beam 2 are poured. The basement floor 11 and the basement exterior wall 1 are poured with concrete twice, and the construction joint should be left 500mm above the basement floor 11.

[0054] In addition, since the U-shaped connecting plate 6 is connected to the lower part of the top beam 2 of the basement, in order to release the temperature stress, the U-shaped connecting plate 6 should be cast 60 days after the top beam 2 of the basement is cast. After the concrete is cast, it should be watered and cured for no less than 28 days. The formwork can be removed only after the concrete reaches the designed strength. The vertical steel bar 10 should be reserved before casting the top beam 2 of the basement, and its length inserted into the top beam 2 should not be less than 40 times the diameter of the steel bar. After casting the U-shaped connecting plate 6, a layer of coarse sand 9 is laid on the plate surface, and its thickness is usually 30 to 60 mm. The soft permeable pipe 8 is inserted into the PVC drainage pipe 7, and then the PVC drainage pipe 7 is placed on the coarse sand layer. It should be set with a slope of 2 to 5% in the longitudinal direction and slope toward the side of the basement outer wall 1. After the pipeline is laid, the coarse sand 9 is poured into the expansion joint and compacted appropriately.

[0055] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An expansion joint structure for basement exterior walls and roof panels, characterized in that: include: The outer wall of the basement has a U-shaped protrusion symmetrically provided on two opposite sides; A top plate is laid above the outer wall of the basement; the top plate is disconnected at the expansion joint; the expansion joint is arranged at the U-shaped outer protrusion; A column is arranged on the basement floor, and is used to support the top plate; at least four columns are provided, and a plurality of columns are symmetrically arranged on both sides of the expansion joint; there is a gap between the column and the outer wall of the basement; Two top beams are symmetrically arranged on both sides of the expansion joint, both ends of the top beams are connected to the columns, and the top beams are used to support the top plate; and, A U-shaped connecting plate, the two ends of which are respectively connected to the lower sides of the two top beams; The expansion joint is formed between the top plate, the two top beams and the U-shaped connecting plate. The expansion joint is filled with coarse sand. A drainage pipe is buried in the coarse sand. Both ends of the drainage pipe are inserted into the U-shaped outer protrusion. A plurality of through holes are provided on the pipe wall of the drainage pipe.

2. An expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: The upper end surface of the expansion joint is lower than the upper end surface of the top plate, and the particle size of the coarse sand is between 1 and 5 mm.

3. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: The U-shaped connecting plate is a concrete casting plate, and vertical steel bars and horizontal steel bars are staggered in the U-shaped connecting plate. One end of the vertical steel bar is anchored in the top beam.

4. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: The drainage pipe is provided with a slope and slopes toward the outer wall side of the basement.

5. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 4, characterized in that: The slope of the drainage pipe is 2-5%.

6. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: The outer periphery of the drainage pipe is covered with a water-filtering geotextile.

7. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: A soft water-permeable pipe having the same length as the drain pipe is arranged in the drain pipe.

8. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: A wall-penetrating waterproof sleeve is arranged in the U-shaped outer protrusion, and the two ends of the drainage pipe are inserted into the wall-penetrating waterproof sleeve.

9. The expansion joint structure for basement exterior walls and ceilings as claimed in claim 1, characterized in that: The width of the expansion joint is not less than 200 mm.

10. An expansion joint structure for basement exterior walls and top plates according to any one of claims 1 to 9, characterized in that: The distance between the basement outer wall and the column is not less than 600 mm.

Images