CN117166756A - Basement roof post-pouring strip reinforcement supporting system and construction method - Google Patents
Basement roof post-pouring strip reinforcement supporting system and construction method Download PDFInfo
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- CN117166756A CN117166756A CN202310999734.4A CN202310999734A CN117166756A CN 117166756 A CN117166756 A CN 117166756A CN 202310999734 A CN202310999734 A CN 202310999734A CN 117166756 A CN117166756 A CN 117166756A
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000002787 reinforcement Effects 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 97
- 239000010959 steel Substances 0.000 claims abstract description 97
- 238000009434 installation Methods 0.000 claims abstract description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 52
- 239000008397 galvanized steel Substances 0.000 claims description 52
- 239000004567 concrete Substances 0.000 claims description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000009415 formwork Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 238000011900 installation process Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The application relates to a post-pouring strip reinforcement support system for a basement roof, which comprises profile steel and horizontal rods, wherein the profile steel is installed at two sides of the post-pouring strip and used as a temporary back-top support, and the profile steel at two sides of the horizontal rods are connected with each other and used as post-pouring strip reinforcement support for the roof. The installation process can be synchronously carried out along with the construction of the structure, the manufacturing construction is simple, the supporting firmness is high, the general investment is ensured, the installation and the disassembly are convenient, the repeated use is realized, and the construction of the basements of each team is facilitated.
Description
Technical Field
The application relates to the field of house construction, in particular to a basement roof post-pouring strip reinforcing and supporting system and a construction method.
Background
The post-cast strip is a concrete strip reserved at corresponding positions of a foundation slab, a wall and a beam in order to prevent harmful cracks possibly generated due to uneven self shrinkage or uneven settlement of a cast-in-situ reinforced concrete structure during the construction of structures and foundations of high-rise buildings and skirt houses. The support frame of the post-pouring strip of the basement influences the expansion of the working face of the whole basement, a traditional support system of the template of the post-pouring strip adopts a steel pipe frame template, a bowl buckle frame template and a reinforced concrete column to support independently, and after the concrete on two sides of the post-pouring strip reaches the design requirement, pouring of the post-pouring strip of the top plate is started. However, the traditional post-pouring belt supporting system is adopted, the concrete pouring in the post-pouring belt is finished and maintained for 28 days, the service time of turnover materials such as a steel pipe support frame and a template is greatly occupied, the supporting materials are seriously accumulated, the problem of excessively high lease cost is caused, and the secondary assembly and disassembly are required to be carried out at random, so that the potential safety hazard of the structural system is greatly increased.
In addition, the traditional post-cast strip supporting structure is compact in arrangement, and connection between the vertical rods is not beneficial to team traffic construction, prevents on-site access, cleaning and transportation, and greatly increases construction cost and daily maintenance cost of projects. The post-cast strip supporting system supported by the concrete column is extremely easy to have the problem of concrete pouring quality, is complex in construction, complex in later disassembly and assembly and high in danger, and is not suitable for being used in projects with higher floors. In summary, how to improve the support system of the post-pouring strip of the basement, improve the same-line condition of the basement road, facilitate the expansion of the working surface of the basement, and solve the problems of cracking, deformation, sinking of the cast-in-situ beam slab, and the like caused by the conditions that the traditional support system is easy to rust, rot, deform, and even be damaged artificially.
Disclosure of Invention
The application aims to overcome the defects of the prior art, and provides a basement roof post-pouring strip reinforcement support system and a construction method thereof, which are convenient to disassemble and assemble, have high bearing capacity, can effectively improve the traffic condition of a basement road, and are convenient for the comprehensive expansion of a basement working surface.
In order to solve the technical problems, the application is realized as follows:
the utility model provides a basement roof post-cast strip consolidates braced system which characterized in that: the post-cast strip reinforcing support comprises profile steel and a horizontal rod, wherein the profile steel is installed on two sides of the post-cast strip and used as a temporary back-roof support, and the profile steel on two sides of the horizontal rod is connected with the post-cast strip which is used as a top plate.
The basement roof post-cast strip reinforcing and supporting system is characterized in that: the device also comprises a tool type base, a pre-buried steel plate, a diagonal draw bar, a positioning pin, a wedge-shaped bolt and a steel pipe disc; the top of the section steel is welded on the embedded steel plate, the bottom of the section steel is welded on the tool type base, the steel pipe disc is welded on the section steel, the section steel is connected with one end of the horizontal rod and one end of the diagonal draw bar through the wedge-shaped bolt, and the other end of the diagonal draw bar is connected on the embedded steel plate through the locating pin;
the basement roof post-cast strip reinforcing and supporting system is characterized in that: the novel hydraulic lifting device is characterized by further comprising a basket bolt, wherein the diagonal draw bars are two-section type, and the two sections of diagonal draw bars are connected through the basket bolt.
The basement roof post-cast strip reinforcing and supporting system is characterized in that: the section steel is a galvanized steel pipe.
The basement roof post-cast strip reinforcing and supporting system is characterized in that: the tool type base comprises a steel plate and foundation bolts, wherein the steel plate is anchored on basement bottom plate concrete through the foundation bolts. And the steel tube displacement caused by upper load change and personnel disturbance is prevented, so that the cracking, deformation and sinking of the upper beam slab concrete structure are caused.
The construction method of the basement roof post-pouring zone reinforcing and supporting system is characterized by comprising the following steps of:
step one: pre-burying a steel plate at the bottom of the structural template;
step two: connecting the locating pin with the embedded steel plate;
step three: installing a tool type base on basement bottom plate concrete;
step four: simultaneously erecting a galvanized steel pipe support and a steel pipe support frame;
step five: installing galvanized steel pipes and pouring the galvanized steel pipes through concrete;
step six: installing a horizontal rod, a diagonal draw bar, a wedge-shaped bolt, a steel pipe disc and a basket bolt;
step seven: performing rust prevention treatment on each component;
step eight: and (5) finishing the installation.
The construction method of the basement roof post-pouring zone reinforcing and supporting system is characterized by comprising the following steps of: the beam (plate) bottom template is perforated in advance, the size is the same as the steel plate size, the upper surface of the pre-buried steel plate and the beam (plate) bottom template are kept at the same elevation, the support die frame is removed after the concrete strength of two sides of the post-cast strip reaches 100%, and the galvanized steel pipe support is reserved for bearing the load of two sides and the upper part of the post-cast strip, so that cracks are avoided at the joint of the beam and the post.
The construction method of the basement roof post-pouring zone reinforcing and supporting system is characterized by comprising the following steps of: the galvanized steel pipe and the formwork support are erected simultaneously, and the round steel pipe and the formwork support bear the load of the upper structure simultaneously when concrete is poured, so that calculation of the galvanized steel pipe support is not needed. After the formwork support is removed, all upper loads are independently supported by the galvanized large steel pipe, and the bearing capacity of the galvanized steel pipe is required to be checked;
the load calculation mainly comprises four parts: the self weight of the building cover attached to each galvanized steel pipe; the dead weight of the template; the dead weight of the bracket; concrete pouring construction load;
the single-branch galvanized steel pipe support under the plate is proved and calculated, and the galvanized steel pipe is hinged at two ends in an up-and-down connection modeThe galvanized steel pipe is stressed as the sum Q of four parts of load calculation and the basement height l, so that the slenderness ratio (flexibility) of the galvanized steel pipe in the supporting structure system in the bearing state is known by Euler formula, and lambda= in the critical state is shown in the Euler formula>，λ p =/>If lambda is greater than or equal to lambda p And if the checking calculation is passed, otherwise, the checking calculation is not passed, and the selection of materials and the size is carried out again.
The stability factor is known from annex C of the Steel Structure design Standard (GB 50017-2017)The stresses of the galvanized steel pipe are therefore:/>=/>needs to meet->≤[/>]。
The support structure is stable and reliable, the installation and the disassembly are convenient, the passing of workers is not influenced, the manual investment is greatly reduced, and the construction efficiency of the post-cast strip of the top plate is effectively improved.
The beneficial effects of the application are as follows: according to the technical scheme, the post-pouring zone reinforcing and supporting system for the basement roof comprises profile steel and horizontal rods, wherein the profile steel is installed on two sides of the post-pouring zone and used as temporary back-top support, and the profile steel on two sides of the horizontal rods is connected with the post-pouring zone reinforcing and supporting system for the roof. The tool type base in the supporting structure composition is manufactured in advance by a professional manufacturer, the lateral displacement deformation generated when the steel pipe is stressed is greatly controlled through the composition form of the foundation bolt and the steel plate, and the tool type base can be reused for multiple times; the galvanized steel pipe is installed according to the position of the pre-lofting, the installation process is formed at one time, no virtual support exists, the structural form is relatively stable, the galvanized steel pipe is convenient to detach and install, the turnover rate is high, and the concrete forming effect is attractive;
the thickness of the upper embedded steel plate is adjusted to be suitable for basement post-cast strips with various heights, so that the basement post-cast strip has universal applicability.
Compared with the traditional form, the support structure has the advantages that the number of supports is obviously reduced, the workload is relatively small, the spacing between the support structure systems is easy to control, and the formed space span is easy for the passage construction of the basement;
compared with the common steel pipe, the galvanized large steel pipe has higher bearing capacity and easy distinguishing, avoids the occurrence of the condition of incorrect disassembly, and greatly improves the construction safety.
Drawings
The application is described in further detail below with reference to the attached drawings and embodiments:
FIG. 1 is a schematic diagram of the structure of the present application.
Fig. 2 is a construction process flow diagram.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the application, are intended to be within the scope of the claimed application based on embodiments of the present application.
As shown in fig. 1: a basement roof post-cast strip reinforcement support system comprises section steel 2, horizontal rods and 3 post-cast strips, wherein section steel is installed on two sides of the section steel and used as temporary back-roof support, and section steel on two sides connected with the horizontal rods is used as post-cast strip reinforcement support of a roof.
The supporting structure material can be recycled, the utilization rate of resources can be improved through recycling, the serious accumulation of materials such as steel pipe scaffold and templates is reduced, the daily maintenance cost is reduced, and the requirements of civilized construction, green construction and efficient construction are met.
The device comprises a tool type base 1, a steel plate 4, a diagonal draw bar 5, a locating pin 6, a wedge-shaped bolt 9 and a steel pipe disc 8; the steel section top is welded on pre-buried steel sheet, and shaped steel bottom welding is on tool type base, and the steel pipe disc welds on shaped steel, is connected with horizon bar and diagonal draw bar one end through wedge bolt, and the diagonal draw bar other end passes through the locating pin to be connected on pre-buried steel sheet, forms specific diagonal draw bar design structure, triangle-shaped geometry invariant structure, consequently the atress support system is firm and safe.
Further, the size of the embedded steel plate is 150mm multiplied by 40mm,
by adopting the embedded steel plates as the positioning devices, the problem of concrete forming quality at two sides of the post-cast strip is solved, and the problems of concrete deformation, cracks and sinking caused by the fact that construction operators collide with the supporting structure in the construction process can be reduced.
The horizontal rod and the diagonal rod are connected in a bolt type manner, so that the rod piece and the galvanized steel pipe are firmly connected, the horizontal rod, the diagonal rod and the galvanized steel pipe are in full-face contact, three-point stress (two points above and below a joint and one point of the bolt to a disc) can be firmly fixed after the wedge-shaped bolt is knocked, the structural strength is increased, the horizontal force is transmitted, the horizontal rod and the galvanized steel pipe body are fixed in a full-face welding manner, and the stress transmission is accurate.
The tool type base is connected with the galvanized large steel pipe in a full-welded mode and is connected with the basement bottom plate through the embedded steel plate and the foundation bolt;
the main purpose of the steel plate and the tool type base is to position and prevent the deformation and sinking of the template caused by overlarge load displacement of the upper structure of the galvanized steel column;
further, the novel hydraulic lifting device further comprises a basket bolt 7, wherein the inclined pull rod is two-section type, and the two sections of inclined pull rods are connected through the basket bolt. The stud bolts of the flower basket are adjusted to adapt to post-pouring belts with different spans, so that the inward instability of a supporting system is effectively prevented; the introduction of the basket bolt and the steel pipe disc solves the problem of connection between the horizontal rod and the galvanized steel pipe in the supporting system, and also solves the problem of stress conversion between the horizontal support rod and the diagonal draw bar, ensures the transmission of the force born by the tie bar to the horizontal support rod and the vertical galvanized steel pipe, ensures the balance of the stress state of the supporting system, and can utilize the basket bolt to adjust the angle between the diagonal draw bar and the horizontal support rod, and accurately adjust the transmission of upper load, so that the whole stress transmission of the supporting structure system is reasonable, balanced and stable.
Further, the section steel is a galvanized steel pipe, the diameter is 125mm, and the wall thickness is 4mm. The longitudinal spacing of the galvanized steel pipes is 4m, and the transverse spacing is 1.6m.
The galvanized steel pipe is connected with the embedded steel plates of the basement top plate and the basement bottom plate, and the thickness of the embedded steel plates is adjusted to adapt to the change of the basement height;
further, the tool type base comprises a steel plate and foundation bolts, and the steel plate is anchored on basement bottom plate concrete through the foundation bolts. And the steel tube displacement caused by upper load change and personnel disturbance is prevented, so that the cracking, deformation and sinking of the upper beam slab concrete structure are caused.
The construction method of the basement roof post-pouring zone reinforcing and supporting system is characterized by comprising the following steps of:
step one: pre-burying a steel plate at the bottom of the structural template;
step two: connecting the locating pin with the embedded steel plate;
step three: installing a tool type base on basement bottom plate concrete;
step four: simultaneously erecting a galvanized steel pipe support and a steel pipe support frame;
step five: installing galvanized steel pipes and pouring the galvanized steel pipes through concrete;
step six: installing a horizontal rod, a diagonal draw bar, a wedge-shaped bolt, a steel pipe disc and a basket bolt;
step seven: performing rust prevention treatment on each component;
step eight: and (5) finishing the installation.
The beam (plate) bottom template is perforated in advance, the size is the same as the steel plate size, the upper surface of the pre-buried steel plate and the beam (plate) bottom template are kept at the same elevation, the support die frame is removed after the concrete strength of two sides of the post-cast strip reaches 100%, and the galvanized steel pipe support is reserved for bearing the load of two sides and the upper part of the post-cast strip, so that cracks are avoided at the joint of the beam and the post.
The galvanized steel pipe and the formwork support are erected simultaneously, and the round steel pipe and the formwork support bear the load of the upper structure simultaneously when concrete is poured, so that calculation of the galvanized steel pipe support is not needed. After the formwork support is removed, all upper loads are independently supported by the galvanized large steel pipe, and the bearing capacity of the galvanized steel pipe is required to be checked;
the load calculation mainly comprises four parts: the self weight of the building cover attached to each galvanized steel pipe; the dead weight of the template; the dead weight of the bracket; concrete pouring construction load;
the single-branch galvanized steel pipe support under the plate is proved and calculated, and the galvanized steel pipe is hinged at two ends in an up-and-down connection modeThe galvanized steel pipe is stressed as the sum Q of four parts of load calculation and the basement height l, so that the slenderness ratio (flexibility) of the galvanized steel pipe in the supporting structure system in the bearing state is known by Euler formula, and lambda= in the critical state is shown in the Euler formula>，λ p =/>If lambda is greater than or equal to lambda p And if the checking calculation is passed, otherwise, the checking calculation is not passed, and the selection of materials and the size is carried out again.
The stability factor is known from annex C of the Steel Structure design Standard (GB 50017-2017)The stresses of the galvanized steel pipe are therefore: />=/>Only need to meet +.>≤[/>]And (3) obtaining the product.
While the present application has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and any modification, equivalent substitution, improvement, etc. within the spirit and principles of the present application should be included in the scope of the present application.
Claims (8)
1. The utility model provides a basement roof post-cast strip consolidates braced system which characterized in that: the post-cast strip reinforcing support comprises profile steel and a horizontal rod, wherein the profile steel is installed on two sides of the post-cast strip and used as a temporary back-roof support, and the profile steel on two sides of the horizontal rod is connected with the post-cast strip which is used as a top plate.
2. The basement roof post-cast strip reinforcement support system of claim 1, wherein: the device also comprises a tool type base, a pre-buried steel plate, a diagonal draw bar, a positioning pin, a wedge-shaped bolt and a steel pipe disc; the top of the section steel is welded on the embedded steel plate, the bottom of the section steel is welded on the tool type base, the steel pipe disc is welded on the section steel, the section steel is connected with one end of the horizontal rod and one end of the diagonal draw bar through the wedge-shaped bolt, and the other end of the diagonal draw bar is connected on the embedded steel plate through the locating pin.
3. The basement roof post-cast strip reinforcement support system of claim 1, wherein: the novel hydraulic lifting device is characterized by further comprising a basket bolt, wherein the diagonal draw bars are two-section type, and the two sections of diagonal draw bars are connected through the basket bolt.
4. The basement roof post-cast strip reinforcement support system of claim 1, wherein: the section steel is a galvanized steel pipe.
5. The basement roof post-cast strip reinforcement support system of claim 1, wherein: the tool type base comprises a steel plate and foundation bolts, wherein the steel plate is anchored on basement bottom plate concrete through the foundation bolts. And the steel tube displacement caused by upper load change and personnel disturbance is prevented, so that the cracking, deformation and sinking of the upper beam slab concrete structure are caused.
6. The construction method of the basement roof post-cast strip reinforcement support system according to claim 1, characterized by comprising the following steps:
step one: pre-burying a steel plate at the bottom of the structural template;
step two: connecting the locating pin with the embedded steel plate;
step three: installing a tool type base on basement bottom plate concrete;
step four: simultaneously erecting a galvanized steel pipe support and a steel pipe support frame;
step five: installing galvanized steel pipes and pouring the galvanized steel pipes through concrete;
step six: installing a horizontal rod, a diagonal draw bar, a wedge-shaped bolt, a steel pipe disc and a basket bolt;
step seven: performing rust prevention treatment on each component;
step eight: and (5) finishing the installation.
7. The construction method of the basement roof post-cast strip reinforced support system according to claim 6, wherein the construction method comprises the following steps: the beam (plate) bottom template is perforated in advance, the size is the same as the steel plate size, the upper surface of the pre-buried steel plate and the beam (plate) bottom template are kept at the same elevation, the support die frame is removed after the concrete strength of two sides of the post-cast strip reaches 100%, and the galvanized steel pipe support is reserved for bearing the load of two sides and the upper part of the post-cast strip, so that cracks are avoided at the joint of the beam and the post.
8. The construction method of the basement roof post-cast strip reinforced support system according to claim 6, wherein the construction method comprises the following steps: the galvanized steel pipe and the formwork support are simultaneously erected, and the round steel pipe and the formwork support bear the load of the upper structure simultaneously when concrete is poured, so that calculation of the galvanized steel pipe support is not needed; after the formwork support is removed, all upper loads are independently supported by the galvanized large steel pipe, and the bearing capacity of the galvanized steel pipe is required to be checked;
the load calculation mainly comprises four parts: the self weight of the building cover attached to each galvanized steel pipe; the dead weight of the template; the dead weight of the bracket; concrete pouring construction load;
the single-branch galvanized steel pipe support under the plate is proved and calculated, and the galvanized steel pipe is hinged at two ends in an up-and-down connection modeWherein the galvanized steel pipe is stressed as the sum Q of the four parts of load calculation, the basement height l, so that the galvanized steel pipe in the supporting structure system is in a bearing stateThe slenderness ratio (flexibility) is known from the euler equation, and λ= = in the critical state>，λ p =/>If lambda is greater than or equal to lambda p Checking calculation is passed, otherwise, checking calculation is not passed, and material and size selection is carried out again;
the stability factor is known from annex C of the Steel Structure design Standard (GB 50017-2017)The stresses of the galvanized steel pipe are therefore: />=/>Needs to meet->≤[/>]。
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| CN202310999734.4A CN117166756A (en) | 2023-08-09 | 2023-08-09 | Basement roof post-pouring strip reinforcement supporting system and construction method |
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| CN202310999734.4A CN117166756A (en) | 2023-08-09 | 2023-08-09 | Basement roof post-pouring strip reinforcement supporting system and construction method |
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- 2023-08-09 CN CN202310999734.4A patent/CN117166756A/en active Pending
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