CN103437549B - Preloading structural part for high and large formwork support system - Google Patents
Preloading structural part for high and large formwork support system Download PDFInfo
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- CN103437549B CN103437549B CN201310420670.4A CN201310420670A CN103437549B CN 103437549 B CN103437549 B CN 103437549B CN 201310420670 A CN201310420670 A CN 201310420670A CN 103437549 B CN103437549 B CN 103437549B
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Abstract
The invention provides a preloading structural part for a high and large formwork support system, which is used for solving the technical problems caused by preloading detection using sandbags or concrete blocks. The preloading structural part comprises a brick pier component and preloading components, wherein the brick pier component consists of a first brick pier block and a second brick pier block; a first floating layer is arranged at the top of the first brick pier block; a second floating layer is arranged at the top of the second brick pier block; the top surface of the first floating layer is level with the top surface of the second floating layer; each preloading component consists of 2-10 preloading units in horizontal arrangement; the preloading components are piled at the top of the brick pier component layer by layer; and 2-20 layers of preloading components are paved at the top of the brick pier component. The preloading structural part provided by the invention has the beneficial effects that a relatively large unit area load can be obtained under the condition of relatively low loading height so as to reduce the height of a preloading body and the hoisting workload of the preloading body and guarantee high safety.
Description
Technical field
The invention belongs to the realm of building construction, be specifically related to the piling prepressing structural member for high and big die plate support system.
Background technology
Along with socioeconomic development, architectural design is constantly to large span, large space future development, and the design and application of super-section, super-span cast-in-situ beam slab is day by day frequent.For the form bracing system of heavy in section reinforced concrete girder slab in construction, in order to verify the intensity of its formwork bracing system, rigidity and stability, the elastic and plastic properties eliminating support system and ground is out of shape the adverse effect brought, often need to carry out piling prepressing to the formwork bracing system of reinforced concrete girder slab before concreting, guarantee the safety and stability of the formwork bracing system of reinforced concrete girder slab and the Forming Quality of component.
Precompressed mode conventional is at present in the template of reinforced concrete girder slab, adopt sandbag or prefabricated concrete block to carry out piling prepressing, adopts this kind of precompressed mode, there is following shortcoming, impact construction:
1, adopt sandbag piling prepressing, workload is large.Need manually filling, handling, handling sandbag ton up to a hundred, labour intensity is large, and wants strict control load value, machinery and manpower consumption large;
2, claim for eot is caused.Existing engineering is all comparatively strict to construction period, and adopts sandbag piling prepressing, and pressing load in advance needs 2 days, 2 days precompressed phases, unloads 2 days, cleans 1 day.Affecting the duration reaches 7 days, even longer;
3, precompressed Data Control is inaccurate, and the rainy day easily produces overload, causes the formwork bracing system of cast-in-situ beam slab to collapse.Adopt the weight of sand pocket prefabricating load all can not accurately control, especially just in case rainy day construction, rainwater pours into sandbag and causes prefabricating load to gather increase, and serious conditions easily causes support system to collapse, and causes serious accident;
4, preloading excessive height, cannot guarantee to pile the stable of carrier.Due to steel concrete proportion about 2.5 tons/m
3, and sandbag proportion 1.6 tons/m
31.2 times of precompressed and prefabricating load generally will overload, if beam section height is 3.0m, the preloading height so piling sand pocket will reach: 3.0*(2.5/1.6) * 1.2=5.625m, so close to the sandbag that 6m is high, be difficult to the safety and stability ensureing accumulation body, need to adopt safeguard procedures, increase security risk and input;
5, adopt concrete precast block as heap loading, although adopted by concrete precast block crane handling to formwork bracing system top to carry out precompressed can solve the problem, the difficulty but concrete precast block is drawn materials, freight increases, and prefabricatedly can produce waste again if built at the scene.
Summary of the invention
The technical barrier existing for piling prepressing detection is carried out for employing sandbag or prefabricated concrete block, the invention provides a kind of piling prepressing structural member for high and big die plate support system, be exclusively used in breadth of section between 0.8 meter ~ 2.0 meters and the Huge Beam of depth of section between 2.0 meters ~ 4.5 meters or the huge floor of thickness of section between 1.5 ~ 2.5 meters carry out the occasion of piling prepressing detection, its concrete structure is as follows:
For the piling prepressing structural member of high and big die plate support system, comprise brick pier assembly and prefabricating load assembly two parts;
The central authorities of cast in situ reinforced concrete beam and floor 40 end face are located at by brick pier assembly; Brick pier assembly is made up of the first brick pier block 11 and second brick pier block 12 two parts; Wherein, the first brick pier block 11 is quadrangular, and the rectangular column that the preferred size of the first brick pier block 11 is long 1 meter, wide 1 meter, height is 1.2 ~ 1.5 meters, is provided with the first floating layer 13 at the top of the first brick pier block 11; Second brick pier block 12 is quadrangular, and the rectangular column that the preferred size of the second brick pier block 12 is long 1 meter, wide 1 meter, height is 1.2 ~ 1.5 meters, is provided with the second floating layer 14 at the top of the second brick pier block 12; The end face of the first floating layer 13 and the end face level of the second floating layer 14; Spacing between the center of the first brick pier block 11 and the center of the second brick pier block 12 is not more than 6 meters, and preferred spacing is 3 ~ 6 meters;
Prefabricating load assembly is made up of prefabricating load unit, and prefabricating load assembly forms by horizontal 2 ~ 10 prefabricating load unit;
Prefabricating load unit is approximate rectangular piece, and forms by lower fixed body 21, balance weight body 22 and upper fixed body 23; Wherein, lower fixed body 21 is channel-section steel with upper fixed body 23, and lower fixed body 21 all adopts model to be 16 channel-section steels with upper fixed body 23 and the length of channel-section steel is not less than 8 meters, and preferred lower fixed body 21 and upper fixed body 23 are the channel-section steel of 9 meters long; Balance weight body 22 is for reinforcing bar and length is not less than 8 meters, and preferred balance weight body 22 adopts diameter to be 25 millimeters and length is the indented bars of 9 meters; The opening of lower fixed body 21 and the opening of upper fixed body 23 snap together opposite to each other, and balance weight body 22 is filled in the region that surrounded by lower fixed body 21 and upper fixed body 23; Namely descend the opening up placement of fixed body 21, in the two-layer opening being arranged in lower fixed body 21 of balance weight body about 22 points, upper fixed body 23 is inserted on the opening of lower fixed body 21 opening downly;
The top in brick pier assembly successively piled up by prefabricating load assembly, and the top of brick pier assembly is covered with the prefabricating load assembly of 2 ~ 20 layers, and brick pier assembly is less than 2.5 meters together with the overall height of 20 layers of prefabricating load assembly, and the low risk of toppling over of the height piled up is little.
useful technique effect
This product is used for breadth of section between 0.8 meter ~ 2.0 meters and the Huge Beam of depth of section between 2.0 meters ~ 4.5 meters or the huge floor of thickness of section between 1.5 ~ 2.5 meters carry out the occasion of piling prepressing; This product can obtain larger Unit area loading under lower preloading altitudes, thus greatly reduce the height of precompressed heap carrier, reduce precompressed heap loading slinger to measure, safety is high, controllability is strong, the reduction of erection time, reduces costs, this product is made up of fragment of brick, channel-section steel and reinforcing bar, material therefor is all materials that any building site all possesses, and draws materials easily, installs, speed of removing is fast, safety is high, draw materials easily, the prepressing materials after dismounting can normally use, hardly generating material expense cost, greatly save precompressed cost, the reduction of erection time.
This product changes sandbag in the past or concrete precast block piling prepressing mode, avoids traditional precompressed and manually loads and transports sandbag, precast concrete prefabricated section a series of hard work amounts such as lifting.
This product can more accurate control load, and material handling is convenient, effectively accelerates precompressed operating efficiency.
Because this product have employed the steel of large proportion, adopting brick pier to form freely supported structure to load, larger Unit area loading can be obtained when consuming less heap loading, thus greatly reduce heap carrier height, safety is high, is highly only 0.3 ~ 0.5 of conventional method preloading height.
This product avoids the sandbag of traditional sandbag preloading mode existing for the rainy day and inhales water problem, and the exception avoided because of load increases and the security risk of mounting system of crushing.
Accompanying drawing explanation
Fig. 1 is the front view of first embodiment of the invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the cross-sectional view of prefabricating load assembly in Fig. 1.
Fig. 4 is the front view of second embodiment.
Sequence number in figure is: the floating layer 14 of first brick pier block 11, second brick pier block the 12, first floating layer 13, second, lower fixed body 21, balance weight body 22, upper fixed body 23, formwork bracing system 30, cast in situ reinforced concrete beam and floor 40.
concrete embodiment
Now further illustrate design feature of the present invention by reference to the accompanying drawings.
embodiment 1
See Fig. 1, for the piling prepressing structural member of high and big die plate support system, comprise brick pier assembly and prefabricating load assembly two parts;
Brick pier assembly is made up of the first brick pier block 11 and second brick pier block 12 two parts; Wherein, the first brick pier block 11 to be long 1 meter, wide 1 meter, height be rectangular column of 1.2 meters, is provided with the first floating layer 13 at the top of the first brick pier block 11; Second brick pier block 12 to be long 1 meter, wide 1 meter, height the be rectangular column of 1.2 meters, is provided with the second floating layer 14 at the top of the second brick pier block 12; The end face of the first floating layer 13 and the end face level of the second floating layer 14; At a distance of 4.5 meters between the center of the first brick pier block 11 and the center of the second brick pier block 12;
Prefabricating load assembly is made up of prefabricating load unit, and prefabricating load assembly forms by horizontal 2 ~ 10 prefabricating load unit;
Prefabricating load unit is approximate rectangular piece, and forms by lower fixed body 21, balance weight body 22 and upper fixed body 23; Wherein, lower fixed body 21 and upper fixed body 23 are model and are 16 and length is the channel-section steel of 9 meters, and balance weight body 22 is 25 millimeters and length is the indented bars of 9 meters for diameter; The opening of lower fixed body 21 and the opening of upper fixed body 23 snap together opposite to each other, and balance weight body 22 is filled in the region that surrounded by lower fixed body 21 and upper fixed body 23; Namely descend the opening up placement of fixed body 21, in eight balance weight body, about 22 points two-layer openings being arranged in lower fixed body 21, upper fixed body 23 is inserted on the opening of lower fixed body 21 opening downly, refers to Fig. 3;
See Fig. 1, the top of formwork bracing system 30 is provided with cast in situ reinforced concrete beam and floor 40, is fixed with brick pier assembly (referring to Fig. 2) in the central authorities of cast in situ reinforced concrete beam and floor 40 end face, and the prefabricating load component placement of individual layer is on brick pier assembly.
The proportionate relationship of the stacks as high of prefabricating load assembly and Huge Beam thickness (or beam slab height) is 0,3 ~ 0.4:1.
embodiment 2
See Fig. 4, for the piling prepressing structural member of high and big die plate support system, comprise brick pier assembly and prefabricating load assembly two parts;
Brick pier assembly is made up of the first brick pier block 11 and second brick pier block 12 two parts; Wherein, the first brick pier block 11 to be long 1 meter, wide 1 meter, height be rectangular column of 1.5 meters, is provided with the first floating layer 13 at the top of the first brick pier block 11; Second brick pier block 12 to be long 1 meter, wide 1 meter, height the be rectangular column of 1.5 meters, is provided with the second floating layer 14 at the top of the second brick pier block 12; The end face of the first floating layer 13 and the end face level of the second floating layer 14; At a distance of 4.5 meters between the center of the first brick pier block 11 and the center of the second brick pier block 12;
Prefabricating load assembly is made up of prefabricating load unit, and prefabricating load assembly forms by horizontal 6 prefabricating load unit;
Prefabricating load unit is approximate rectangular piece, and forms by lower fixed body 21, balance weight body 22 and upper fixed body 23; Wherein, lower fixed body 21 and upper fixed body 23 are model and are 16 and length is the channel-section steel of 9 meters, and balance weight body 22 is 25 millimeters and length is the indented bars of 9 meters for diameter; The opening of lower fixed body 21 and the opening of upper fixed body 23 snap together opposite to each other, and balance weight body 22 is filled in the region that surrounded by lower fixed body 21 and upper fixed body 23; Namely descend the opening up placement of fixed body 21, in eight balance weight body, about 22 points two-layer openings being arranged in lower fixed body 21, upper fixed body 23 is inserted on the opening of lower fixed body 21 opening downly;
The top of formwork bracing system 30 is provided with cast in situ reinforced concrete beam and floor 40, is fixed with brick pier assembly in the central authorities of cast in situ reinforced concrete beam and floor 40 end face, and the prefabricating load assembly of 9 layers is successively piled up from bottom to up at the top of brick pier assembly.During detection, the settlement monitoring that the monitoring point in leveling measuring instrument alignment template support system 30 is carried out, convert and analyze.
In the present embodiment, the height of corresponding formwork bracing system 30 is 20 meters, the largest cross-sectional sized of corresponding cast in situ reinforced concrete beam and floor 40 is wide 1.2 meters high 3.0 meters, piling prepressing is carried out according to traditional approach, need the precast concrete block of the sandbag body of stacking 6 meters high or 3.5 meters high, certainly will artificial, the material of at substantial and duration, and the safety of piling prepressing cannot be guaranteed.And the precompressed by adopting piling prepressing method of the present invention successfully to achieve falsework system, highly less than 2 meters, be only 0.3 ~ 0.5 of traditional structure height, material saving cost greatly, shorten the duration, continue to use after material therefor is also detachable, remarkable in economical benefits.
Claims (3)
1. for the piling prepressing structural member of high and big die plate support system, it is characterized in that, comprise brick pier assembly and prefabricating load assembly two parts;
The central authorities of cast in situ reinforced concrete beam and floor (40) end face are located at by brick pier assembly; Brick pier assembly is made up of the first brick pier block (11) and second brick pier block (12) two parts; Wherein, the first brick pier block (11) is quadrangular, is provided with the first floating layer (13) at the top of the first brick pier block (11); Second brick pier block (12) is quadrangular, is provided with the second floating layer (14) at the top of the second brick pier block (12); The end face of the first floating layer (13) and the end face level of the second floating layer (14); Between the center of the first brick pier block (11) and the center of the second brick pier block (12), spacing is not more than 6 meters;
Prefabricating load assembly is made up of prefabricating load unit, and prefabricating load assembly forms by horizontal 2 ~ 10 prefabricating load unit;
Prefabricating load unit is approximate rectangular piece, and forms by lower fixed body (21), balance weight body (22) and upper fixed body (23); Wherein, lower fixed body (21) and upper fixed body (23) are channel-section steel, and balance weight body (22) is reinforcing bar; The opening of lower fixed body (21) and the opening of upper fixed body (23) snap together opposite to each other, and balance weight body (22) is filled in the region that surrounded by lower fixed body (21) and upper fixed body (23); Namely descend the opening up placement of fixed body (21), balance weight body (22) is point up and down in the two-layer opening being arranged in lower fixed body (21), and upper fixed body (23) is inserted on the opening of lower fixed body (21) opening downly;
The top in brick pier assembly successively piled up by prefabricating load assembly, and the top of brick pier assembly is covered with the prefabricating load assembly of 2 ~ 20 layers.
2. the piling prepressing structural member for high and big die plate support system according to claim 1, is characterized in that, the first brick pier block (11) to be long 1 meter, wide 1 meter, height be rectangular column of 1.2 ~ 1.5 meters; Second brick pier block (12) to be long 1 meter, wide 1 meter, height the be rectangular column of 1.2 ~ 1.5 meters.
3. the piling prepressing structural member for high and big die plate support system according to claim 1, is characterized in that, lower fixed body (21) and upper fixed body (23) are the channel-section steel that model is 16, balance weight body (22) for diameter be the indented bars of 25 millimeters; The length of lower fixed body (21), balance weight body (22) and upper fixed body (23) is all not less than 8 meters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420670.4A CN103437549B (en) | 2013-09-16 | 2013-09-16 | Preloading structural part for high and large formwork support system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420670.4A CN103437549B (en) | 2013-09-16 | 2013-09-16 | Preloading structural part for high and large formwork support system |
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| Publication Number | Publication Date |
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| CN103437549A CN103437549A (en) | 2013-12-11 |
| CN103437549B true CN103437549B (en) | 2015-07-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847125A (en) * | 2015-05-25 | 2015-08-19 | 重庆大学 | Hoisting equipment special for variable span precompression |
| CN110043029A (en) * | 2019-05-20 | 2019-07-23 | 贵州建工集团第二建筑工程有限责任公司 | The precompressed water tank and pre-pressing process of huge laced beam steel pipe full framing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481748A (en) * | 1980-09-10 | 1984-11-13 | Harsco Corporation | Shoring system and parts thereof |
| AU644977B2 (en) * | 1991-12-27 | 1993-12-23 | Ono, Tatsuo | Support system |
| CN202467172U (en) * | 2011-11-29 | 2012-10-03 | 朱卫国 | Steel support structure connected with floor steel beam web |
| CN103063510A (en) * | 2012-12-29 | 2013-04-24 | 青建集团股份公司 | Loading device for template supporting systems |
| CN203475833U (en) * | 2013-09-16 | 2014-03-12 | 中铁四局集团建筑工程有限公司 | Surcharge preloading structural member for high and large formwork supporting system |
-
2013
- 2013-09-16 CN CN201310420670.4A patent/CN103437549B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481748A (en) * | 1980-09-10 | 1984-11-13 | Harsco Corporation | Shoring system and parts thereof |
| AU644977B2 (en) * | 1991-12-27 | 1993-12-23 | Ono, Tatsuo | Support system |
| CN202467172U (en) * | 2011-11-29 | 2012-10-03 | 朱卫国 | Steel support structure connected with floor steel beam web |
| CN103063510A (en) * | 2012-12-29 | 2013-04-24 | 青建集团股份公司 | Loading device for template supporting systems |
| CN203475833U (en) * | 2013-09-16 | 2014-03-12 | 中铁四局集团建筑工程有限公司 | Surcharge preloading structural member for high and large formwork supporting system |
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| CN103437549A (en) | 2013-12-11 |
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