CN102635179A - Device for preventing beam or beamless slab filler wall top from cracking and construction method - Google Patents
Device for preventing beam or beamless slab filler wall top from cracking and construction method Download PDFInfo
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- CN102635179A CN102635179A CN2012101314539A CN201210131453A CN102635179A CN 102635179 A CN102635179 A CN 102635179A CN 2012101314539 A CN2012101314539 A CN 2012101314539A CN 201210131453 A CN201210131453 A CN 201210131453A CN 102635179 A CN102635179 A CN 102635179A
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Abstract
The invention belongs to the field of construction, relates to the aspect of masonry engineering and especially relates to a device for preventing beam or beamless slab filler wall top from cracking and a construction method. The invention aims to provide a device for preventing beam or beamless slab filler wall top from cracking and a construction method, wherein the device is simple in design and convenient for use, so that the cracking problem of the beam or beamless slab filler wall top is thoroughly solved. According to the technical scheme provided by the invention, the device comprises an L-shaped long angle steel, L-shaped angle steel baffle sheets and split bolts, and is characterized in that: a plurality of holes, through which the split bolts can pass, are formed on the L-shaped long angle steel; the L-shaped angle steel baffle sheets are independent baffle sheets; each baffle sheet is corresponding to each split bolt; holes, through which the split bolts can pass, are formed on the baffle sheets; and the baffle sheets are arranged at intervals. According to the method provided by the invention, the cracking problem of the beam or beamless slab filler wall is thoroughly solved, and the costs of reworking, repairing, and the like, caused by a series of problems, such as destroyed decorative layer, outer wall leakage, and the like, of the wall, are avoided.
Description
Technical field
The invention belongs to the realm of building construction, relate to the masonry project aspect, particularly relate to a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down device and the job practices of splitting.
Background technology
At building engineering field, beam or do not have beam slab at the bottom of infilled wall back down that to split be the common qualitatively problem of masonry project, in case beam or do not have beam slab at the bottom of infilled wall back down and split, promptly make the infilled wall face plaster and the crack occurs, influence the metope presentation quality.If pasted rigidity ornament materials such as ceramic tile on the metope, when the crack further develops, also can be with these rigidity ornament materials drawing cracks, not only influence attractive in appearancely, safety problem also takes place easily; If this type qualitative problems of construction takes place exterior wall, these cracks will cause exterior wall leakage through after the development of certain hour.
Cause the reason of above-mentioned quality problems to mainly contain: the one, the compression sedimentation takes place and throws off at the bottom of causing wall top and beam or not having beam slab in the mortar of infilled wall masonry; The 2nd, variations in temperature causes beam or does not have the beam slab concrete and two kinds of different materials of infilled wall masonry produce different distortion and on the wallboard face, ftracture; The 3rd, ambient temperature changes when excessive, owing to the sidesway form is that shear strain causes wall and beam or do not have that beam slab, the strain of post interface are excessive to cause producing diagonal crack.
In order to prevent above-mentioned quality problems; The existing practice basically all is that set about two aspects; Control and prevent: the one, control the building by laying bricks or stones of every day highly is not more than 1.8m; The assurance masonry mortar can not avoid mortar thickness too small because of action of gravity produces bigger expendable compressive strain before reaching certain intensity; The 2nd, when building by laying bricks or stones to not stopping to build by laying bricks or stones during 30～40mm left and right sides apart from beam or at the bottom of having beam slab; After making 7 days; When masonry mortar compression sedimentation was basicly stable, the slit between at the bottom of utilizing solid brick to add mortar tiltedly to build jam-packed wall top and beam or do not have beam slab was to avoid beam or not have wall crazing under the beam slab.The existing practice has problems equally, and the one, though the speed of building by laying bricks or stones slows down, masonry mortar is under temperature and action of gravity; The characteristics that continuous generation compressive strain is arranged; Even leave standstill 7 days again, deformation of wall tends towards stability, but because materials for wall is different with the concrete material modulus of deformation; As time goes on, the total deformation that is produced after the stack of the micro-strain of each layer masonry mortar accumulative total still can be so that wall crazing; The 2nd, the wall top with beam or the slit between at the bottom of not having beam slab be to realize being connected of wall and beam through the method that solid brick is tiltedly built jam-packed; But; The compressive strain of accumulative total stack occurs when body of wall after, solid brick is tiltedly built the jam-packed effect and is reduced rapidly, and fundamentally method avoids body of wall the crack not occur.
Summary of the invention
In order to solve the technical problem of above-mentioned existence; The invention provides a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down device and the job practices of splitting; Simplicity of design not only, and easy to use, and infilled wall backs down the problem of splitting at the bottom of can fundamentally improving beam or not having beam slab.
Technical scheme of the present invention is such: a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, comprised L shaped long angle steel, L shaped angle steel catch; And split bolt, it is characterized in that: a plurality of holes that split bolt is passed are arranged on the L shaped long angle steel, and L shaped angle steel catch is independent catch; Each catch is corresponding one by one with a split bolt; The hole that split bolt is passed is arranged on the catch, has between the catch at interval, be used for to beam or do not have beam slab and infilled wall between the slit fill concrete; The hole that split bolt is passed is also arranged on the catch, and packing ring and nut are installed on the outside of L shaped long angle steel and L shaped angle steel catch respectively; When cantilever thickness perhaps is no beam slab than infilled wall thickness is big.Each split bolt both sides is placed a flitch respectively, and the top mark height of flitch is advisable to be not less than split bolt top mark height, makes when avoiding tighting a bolt nut L shaped long angle steel and L shaped angle steel pad tilt.
The perforation spacings of split bolt is 1.5m ~ 2m, considers from intensity, stiffness and ductility angle, selects the split bolt of A3 steel processing the most suitable; The selectable diameter of bolt is 6 ~ 16 mm; Optimum diameter is 10 mm, and diameter is too small to be broken easily, and diameter is excessive; Formed hole is excessive after then removing split bolt, deals with trouble.
Angle steel and angle steel catch are designed to L shaped, are in order to strengthen rigidity, angle steel and the distortion of angle steel catch when avoiding split bolt afterburning.
L angle steel and the preferred unequal angle of L angle steel flap of material; Its preferred model specification is ∟ 50*32*4, according to beam or do not have beam slab and infilled wall between the length in slit, the length of angle steel can be adjusted on demand; Available whole root timber material splicing, insufficient section replenishes with angle cleat; The corresponding angle steel catch of split bolt, its length is advisable to be not less than 50 mm, and for economical with materials and be convenient to floating concrete side of filling, catch length is also unsuitable excessive.The edge of a wing height on the long limit of L shaped angle steel is bigger slightly than infilled wall top and the slit of beam (or not having beam slab) at the end, and when cantilever thickness was identical with thickness of wall body, the two ends, the edge of a wing on the long limit of L shaped angle steel ride over the wall top side face respectively and each 5 ~ 10mm of beam bottom side is advisable.When cantilever thickness bigger or when the no beam slab than thickness of wall body; The edge of a wing on the long limit of L shaped angle steel and the edge of a wing, the long limit of angle steel catch withstand on beam (plate) bottom surface; Place a flitch that length is identical with the wall thickness degree respectively in split bolt both sides, wall top, flitch top mark height is advisable to be not less than split bolt top mark height.Split bolt is tightened in utilization, makes L shaped angle steel and catch hold out against the flitch two ends and clamps infilled wall.Because the concrete lateral pressure of filling is very little, so the spacing in hole is advisable with 1.5 ~ 2m; When the surface irregularity of wall top side face that contacts with the edge of a wing, the long limit of angle steel or beam bottom side; The desirable 1.5m of the spacing in hole, otherwise, the desirable 2m of the spacing in hole then; Its purpose mainly is that wall and beam sides are close in the edge of a wing on the long limit of angle steel when guaranteeing the split bolt tension, makes that the concrete surface after filling is smooth.
Operating principle of the present invention is such: build by laying bricks or stones apart from beam or at the bottom of not having beam slab during 30～40mm left and right sides at infilled wall; Left standstill 7 days; Accomplish the compressive strain at initial stage when making infilled wall intensity reach design strength; After treating that masonry mortar compression sedimentation is basicly stable, then beam or do not have beam slab and infilled wall between clog and make firm by ramming closely knit with this slit of dry microdilatancy pea gravel concreten (be admixture the pea gravel concreten of cement consumption 10% ± 2 micro-expanding agent), make infilled wall be in compressive state; The normal stress that expanding material produced can replenish the shrinkage strain of infilled wall fully and tightly oppress infilled wall, makes that the body of wall after plastering can not ftracture.
Adopt said apparatus, job practices of the present invention is accomplished like this:
1) guaranteeing that infilled wall is built by laying bricks or stones every day highly is not more than 1.8m;
2) when building by laying bricks or stones to not stopping to build by laying bricks or stones during 30～40mm left and right sides apart from beam or at the bottom of having beam slab, leave standstill more than 7 days, masonry mortar compression sedimentation is basicly stable;
3) after 7 days, will long angle steel along elongated the installing of wall one side (if exterior wall then props up in the wall outside), the angle steel catch props up at the wall opposite side.When cantilever thickness is identical with the wall thickness degree, through split bolt with they be clipped at the bottom of the beam with infilled wall on, form beam push up with infilled wall between the template system in slit; When cantilever thickness bigger or when the no beam slab than thickness of wall body; The edge of a wing on the long limit of L shaped angle steel and the edge of a wing, the long limit of angle steel catch withstand on beam or do not have the beam slab bottom surface; Place a flitch that length is identical with the wall thickness degree respectively in split bolt both sides, wall top, flitch top mark height is advisable to be not less than split bolt top mark height.Split bolt is tightened in utilization, makes L shaped angle steel and catch hold out against the flitch two ends and clamps infilled wall.Form the template system in slit between beam and the infilled wall top;
4) dry microdilatancy pea gravel concreten (be admixture the pea gravel concreten of cement consumption 10% ± 2 micro-expanding agent) is filled into beam or is not had beam slab from the neutral gear slit between each angle steel catch at the bottom of and in the slit between the infilled wall top and make firm by ramming; Make the pea gravel concreten filling closely knit, fill up the slit until pea gravel concreten, at last that its surface is floating; After at least 3 days; Can turn on the nut on the split bolt, extract split bolt out, this device is removed;
5) under the effect of the microdilatancy of micro-expanding agent; Concrete constantly replenishes the shrinkage strain that infilled wall produces owing to mortar compression sedimentation; And tightly oppress infilled wall; Make beam or do not have at the bottom of the beam slab and infilled wall top between the crack can not appear, guarantee that the quality problems of metope cracking at the bottom of the beam can not appear in metope during use.
Solid brick is tiltedly built the processing method that holds out against between at the bottom of adopting wall top, beam more at present or not having beam slab; The problem of infilled wall cracking at the bottom of method provided by the present invention has fundamentally solved beam or do not had beam slab has avoided metope because of expenses such as doing over again of taking place of a series of problems such as decorative layer is destroyed, exterior wall leakage and maintenances.
Description of drawings:
Fig. 1 is the mounting vertical plane sectional drawing of beam of the present invention when identical with the wall thickness degree.
Fig. 2 is the A-A position plane sectional drawing of beam of the present invention Fig. 1 when identical with the wall thickness degree.
Fig. 3 is the B-B position duty sectional drawing of beam of the present invention Fig. 2 when identical with the wall thickness degree.
Fig. 4 be cantilever thickness of the present invention than wall thickness degree the mounting vertical plane sectional drawing during big or girderless floor.
Fig. 5 be cantilever thickness of the present invention than wall thickness degree the C-C position plane sectional drawing of Fig. 4 during big or girderless floor.
Fig. 6 be cantilever thickness of the present invention than wall thickness degree the D-D position duty sectional drawing of Fig. 5 during big or girderless floor.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is further specified.
Can know by Fig. 1-6, when infilled wall 7 is built by laying bricks or stones to stopping to build by laying bricks or stones during the left and right sides apart from beam 8 (or not having beam slab 8) end 30～40mm.After leaving standstill 7 days; When cantilever thickness is identical with the wall thickness degree; Will be long angle steel 1, angle steel catch 2 be placed on the both sides, slit between infilled wall 7 and beam 8 feather edges (if infilled wall 7 is exterior walls, then long angle steel 1 in infilled wall 7 outsides) respectively, and split bolt 5 connections of packing ring 4 and nut 3 are housed respectively through two ends; Fastening nut 3 makes long angle steel 1, angle steel catch 2 tightly be clipped in the both sides, slit between infilled wall 7 and beam 8 feather edges; When cantilever thickness bigger or when the no beam slab than infilled wall thickness; The edge of a wing and the edge of a wing, angle steel catch 2 long limit on long angle steel 1 long limit are withstood on beam or do not have beam slab 8 bottom surfaces (if infilled wall 7 is exterior walls; 1 in then long angle steel is in infilled wall 7 outsides); Place the length flitch 9 identical with infilled wall 7 thickness respectively in infilled wall 7 top split bolts 5 both sides, flitch 9 top mark height are advisable to be not less than split bolt 5 top mark height.The nut 3 on the split bolt 5 is tightened in utilization, makes long angle steel 1 and catch 2 hold out against flitch 9 two ends and clamp infilled wall 7, forms beam or do not have beam slab 8` the template system in slit between pushing up with infilled wall 7.Between the slit, filling dry microdilatancy pea gravel concreten 6 (micro-expanding agents of admixture cement consumption 10% ± 2) then also makes firm by ramming; Make pea gravel concreten 6 fillings closely knit, fill up the slit until pea gravel concreten 6, at last that its surface is floating; After at least 3 days; Can turn on the split bolt 5 nut 3, extract split bolt 5 out, this device is removed.For the flitch that is provided with, need not to remove, be embedded in the pea gravel concreten 6 and get final product.
Claims (10)
- One kind prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, comprised L shaped long angle steel, L shaped angle steel catch; And split bolt, it is characterized in that: a plurality of holes that split bolt is passed are arranged on the L shaped long angle steel, and L shaped angle steel catch is independent catch; Each catch is corresponding one by one with a split bolt; The hole that split bolt is passed is arranged on the catch, have between the catch at interval, L shaped angle steel is connected with split bolt with L shaped angle steel catch.
- 2. according to claim 1 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, it is characterized in that: split bolt is furnished with packing ring and nut, and is installed on the outside of L shaped long angle steel and L shaped angle steel catch respectively.
- 3. according to claim 1 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits; It is characterized in that: when cantilever thickness perhaps is no beam slab than infilled wall thickness is big; Each split bolt both sides is placed a flitch respectively, and the top mark height of flitch is not less than split bolt top mark height.
- 4. according to claim 1 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, it is characterized in that: select the split bolt of A3 steel processing, the selectable diameter of bolt is 6 ~ 16 mm.
- 5. according to claim 4 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, it is characterized in that: the split bolt diameter is 10 mm.
- 6. according to claim 1 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits; It is characterized in that: L angle steel and L angle steel flap of material are unequal angle; According to beam or do not have beam slab and infilled wall between the length in slit; The length of angle steel is adjusted on demand, and with whole root timber material splicing, insufficient section replenishes with angle cleat; The corresponding angle steel catch of split bolt, angle steel catch length is not less than 50 mm.
- 7. according to claim 6 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, it is characterized in that: L angle steel and L angle steel flap of material model specification Wei ∟ 50*32*4.
- 8. according to claim 1 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits, it is characterized in that: when cantilever thickness was identical with thickness of wall body, the two ends, the edge of a wing on the long limit of L shaped angle steel rode over wall top side face and each 5 ~ 10mm of beam bottom side respectively; When cantilever thickness bigger or when the no beam slab than thickness of wall body; The edge of a wing on the long limit of L shaped angle steel and the edge of a wing, the long limit of angle steel catch withstand on beam (plate) bottom surface; Place a flitch that length is identical with the wall thickness degree respectively in split bolt both sides, wall top, flitch top mark height is not less than split bolt top mark height.
- 9. according to claim 1 a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the device that splits; It is characterized in that: the spacing in split bolt hole is 1.5 ~ 2m; When the surface irregularity of wall top side face that contacts with the edge of a wing, the long limit of angle steel or beam bottom side; The desirable 1.5m of the spacing in hole, otherwise, the desirable 2m of the spacing in hole then.
- One kind adopt claim 1 described a kind of prevent beam or do not have beam slab at the bottom of infilled wall back down the beam of the device that splits or do not have beam slab at the bottom of the job practices of infilled wall, may further comprise the steps:1) guaranteeing that infilled wall is built by laying bricks or stones every day highly is not more than 1.8m;2) when building by laying bricks or stones to not stopping to build by laying bricks or stones during 30～40mm left and right sides apart from beam or at the bottom of having beam slab, leave standstill more than 7 days, masonry mortar compression sedimentation is basicly stable;3) after 7 days, will long angle steel along elongated the installing of wall one side (if exterior wall then props up in the wall outside), the angle steel catch props up at the wall opposite side; When cantilever thickness is identical with the wall thickness degree, through split bolt with they be clipped at the bottom of the beam with infilled wall on, form beam push up with infilled wall between the template system in slit; When cantilever thickness bigger or when the no beam slab than thickness of wall body; The edge of a wing on the long limit of L shaped angle steel and the edge of a wing, the long limit of angle steel catch withstand on beam or do not have the beam slab bottom surface; Place a flitch that length is identical with the wall thickness degree respectively in split bolt both sides, wall top, flitch top mark height is advisable to be not less than split bolt top mark height; Split bolt is tightened in utilization, makes L shaped angle steel and catch hold out against the flitch two ends and clamps infilled wall; Form the template system in slit between beam and the infilled wall top;4) dry microdilatancy pea gravel concreten (be admixture the pea gravel concreten of cement consumption 10% ± 2 micro-expanding agent) is filled into beam or is not had beam slab from the neutral gear slit between each angle steel catch at the bottom of and in the slit between the infilled wall top and make firm by ramming; Make the pea gravel concreten filling closely knit, fill up the slit until pea gravel concreten, at last that its surface is floating; After at least 3 days; Can turn on the nut on the split bolt, extract split bolt out, this device is removed;5) under the effect of the microdilatancy of micro-expanding agent; Concrete constantly replenishes the shrinkage strain that infilled wall produces owing to mortar compression sedimentation; And tightly oppress infilled wall; Make beam or do not have at the bottom of the beam slab and infilled wall top between the crack can not appear, guarantee that the quality problems of metope cracking at the bottom of the beam can not appear in metope during use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101314539A CN102635179A (en) | 2012-05-02 | 2012-05-02 | Device for preventing beam or beamless slab filler wall top from cracking and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101314539A CN102635179A (en) | 2012-05-02 | 2012-05-02 | Device for preventing beam or beamless slab filler wall top from cracking and construction method |
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| CN102635179A true CN102635179A (en) | 2012-08-15 |
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| CN2012101314539A Pending CN102635179A (en) | 2012-05-02 | 2012-05-02 | Device for preventing beam or beamless slab filler wall top from cracking and construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842204A (en) * | 2017-11-16 | 2018-03-27 | 四川中新房绿色智能建筑工程有限公司 | A kind of floor installed height mark adjusting means and absolute altitude adjusting method |
| CN108951940A (en) * | 2018-07-20 | 2018-12-07 | 中国地震局工程力学研究所 | A kind of frame wall filled with masonry and the practice discharging attachment device certainly using stress |
| CN113006337A (en) * | 2021-03-03 | 2021-06-22 | 中国中元国际工程有限公司 | Angle steel piece fixing method for pulling connection between wall top and beam or plate of infilled wall |
| CN114109026A (en) * | 2021-11-25 | 2022-03-01 | 中铁建设集团华东工程有限公司 | Tool for plugging joints of masonry outer wall and construction method |
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| CN113006337A (en) * | 2021-03-03 | 2021-06-22 | 中国中元国际工程有限公司 | Angle steel piece fixing method for pulling connection between wall top and beam or plate of infilled wall |
| CN114109026A (en) * | 2021-11-25 | 2022-03-01 | 中铁建设集团华东工程有限公司 | Tool for plugging joints of masonry outer wall and construction method |
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Application publication date: 20120815 |