Construction method of a quickly deployable steel bar support for super-thick raft slab construction

Abstract

The present invention provides a construction method for a fast-deployment steel bar support for ultra-thick raft slab construction, comprising: tying a lower row of steel bars on the bottom surface of the raft slab, and setting up a temporary steel pipe support frame between the bottom surface and the raft slab surface; tying an upper row of steel bars on the lower part of the raft slab surface, and hoisting into place each fast-deployment steel bar support with an undeployed foldable support cross bar; connecting a retractable top support of each fast-deployment steel bar support with the bottom surface of the raft slab, and connecting a support bottom support of each fast-deployment steel bar support with the lower row of steel bars to form a fast-deployment steel bar support with each deployed foldable support cross bar; connecting each fast-deployment steel bar support into a whole; removing the temporary steel pipe support, and constructing wall column dowel bars on the upper part of the raft slab surface; and pouring raft slab concrete on the fast-deployment steel bar support, thereby optimizing the construction process of the ultra-thick raft slab, increasing the raft slab construction speed, resolving safety issues, and improving construction quality.

Description

Technical Field

[0001] The invention relates to a construction method for quickly deploying a steel bar support for ultra-thick raft slab construction. Background Art

[0002] In order to ensure the foundation stability of super high-rise buildings, thicker foundation raft slabs greater than or equal to 4.0m are often used. The ultra-thick foundation raft slab is not only inconvenient for the positioning, binding and elevation adjustment of the steel bars on the raft slab, but also slows the construction speed. At the same time, there are safety risks of falling from heights and cross-operation during the construction process, making construction safety difficult to guarantee.

[0003] In traditional methods, the reinforcement support of the raft slab is mainly welded and erected with materials with high rigidity such as channel steel and I-beam. The erection is risky and takes a long time. In addition, the raft slab reinforcement construction can only be carried out after the erection calibration is completed. Summary of the Invention

[0004] The object of the present invention is to provide a construction method for quickly deploying steel bar supports for ultra-thick raft slab construction.

[0005] To solve the above problems, the present invention provides a construction method for quickly deploying steel bar supports for ultra-thick raft slab construction, comprising:

[0006] Determine the size and required quantity of the quick-deployment steel support brackets for the construction of extra-thick raft slabs based on the project raft slab conditions, and manufacture the quick-deployment steel support brackets for the construction of extra-thick raft slabs in advance according to the determined size and quantity;

[0007] Tie up the lower row of steel bars on the bottom surface of the raft slab and set up a temporary steel pipe support frame between the bottom surface and the surface of the raft slab;

[0008] After the temporary steel pipe support frame is erected and the horizontal protective net is hung on the temporary steel pipe support frame, the upper row of steel bars are tied and laid out on the lower part of the raft surface, and the quick-deployment steel bar supports with the foldable support cross bars that have not been unfolded are hoisted into place;

[0009] After the rapid deployment steel bar support is hoisted into place, the retractable top support of each rapid deployment steel bar support is connected to the bottom surface of the raft slab, the support bottom support of each rapid deployment steel bar support is connected to the lower row of steel bars, and the foldable support cross bars are unfolded to form a rapid deployment steel bar support with each unfolded foldable support cross bar; by welding adjacent unfolded foldable support cross bars, each rapid deployment steel bar support is connected into a whole, and reinforcement measures are taken;

[0010] After the reinforcement of each quick-deployment steel support is completed, the temporary steel pipe support is removed and the wall column reinforcement on the upper part of the raft surface is constructed;

[0011] The raft concrete is poured on the fast-deployed steel reinforcement brackets that are connected into a whole.

[0012] Furthermore, in the above method, the rapid deployment steel bar supports for ultra-thick raft slab construction are fabricated in advance according to the determined size and quantity, including:

[0013] Make the support poles;

[0014] A retractable top support is provided on the top of the support pole;

[0015] A bracket base is provided at the bottom of the bracket upright;

[0016] The foldable support cross bar is connected to the foldable support cross bar through a hinge.

[0017] Furthermore, in the above method, after the rapid deployment steel bar supports for ultra-thick raft slab construction are fabricated in advance according to the determined size and quantity, the method further includes:

[0018] Place the cooling pipe and temperature measuring wire on the bracket pole in advance and fix them with clamps.

[0019] Furthermore, in the above method, before the cooling pipe and the temperature measuring line are arranged on the support pole in advance and fixed by the clamp ring, the method further includes:

[0020] The clamping rings are arranged at intervals on the support poles.

[0021] Furthermore, in the above method, before pouring the raft concrete on the rapidly deployed steel bar supports connected into a whole, the method further comprises:

[0022] Turn on the power supply of the temperature measuring line, connect the cooling pipes on each quick-deployment steel bar support and connect the water source.

[0023] Furthermore, in the above method, after the foldable support cross bar is connected to the foldable support cross bar via a hinge, the method further includes:

[0024] A metal water stop ring is provided on the upper portion of the support upright pole close to the support base.

[0025] Furthermore, in the above method, hoisting each of the quick-deployment steel bar supports without unfolding the foldable support cross bars into place comprises:

[0026] The quick-deployment steel bar supports of each foldable support cross bar that has not been unfolded are hoisted into place through the hoisting ring on the support upright near the telescopic top support.

[0027] Furthermore, in the above method, connecting the foldable support cross bar to the foldable support cross bar via a hinge comprises:

[0028] The foldable support cross bars are arranged at intervals on the support vertical bars.

[0029] Furthermore, in the above method, the foldable support cross bars are arranged at intervals on the support vertical bars, comprising:

[0030] Starting from 200mm from the bottom of the support upright, a foldable support cross bar is symmetrically set on both sides of the support upright every 1500mm.

[0031] Furthermore, in the above method, the cross bar of the foldable support is 1200 mm long and is made of channel steel.

[0032] Compared with the prior art, the rapid deployment steel bar support of the present invention not only saves the raft construction period, but also has the following characteristics:

[0033] 1. With the help of temporary steel pipe support frame, the safety of raft reinforcement construction can be improved.

[0034] 2. Rapid deployment of steel bar supports is prefabricated in advance. Compared with the foundation pit construction environment with high uncertainty, it can improve the support construction quality, improve the reliability of the support, and ensure the overall stability of the raft steel bars.

[0035] 3. With the help of rapid deployment of steel support brackets, systems such as bracket anti-seepage, large-volume concrete temperature measurement, and cooling water pipes can be integrated in advance to further ensure the construction quality and speed of ultra-thick raft slabs.

[0036] Compared with the existing construction method, the present invention has the following effects:

[0037] (1) The present invention can optimize the raft construction process and speed up the construction of ultra-thick rafts by using the application of the rapidly formed steel bar bracket, thus saving the construction period.

[0038] (2) The present invention adopts a modular semi-prefabricated steel bar bracket, which can deepen the bracket layout and optimize the bracket parameters in advance. At the same time, it is manufactured in a processing plant. Compared with the complex construction environment in the raft, the bracket construction quality is better and the bracket material investment can be saved.

[0039] (3) The present invention can improve the safety of raft construction, reduce the work and welding amount of raft supports, and reduce the hidden dangers of raft construction accidents.

[0040] (4) The present invention integrates a support waterproofing system, a large-volume concrete cooling system, and a temperature measurement system, thereby improving the construction quality of the raft while reducing the workload of the raft. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 11 is a schematic diagram of a folded fast-deployment steel bar support for ultra-thick raft construction according to an embodiment of the present invention;

[0042] Figure 2 1 is a schematic diagram of a rapid deployment steel bar support for ultra-thick raft construction according to an embodiment of the present invention;

[0043] Figure 3 Schematic diagram of the installation of the lower row of steel bars and temporary steel pipe support frame of the raft according to one embodiment of the present invention;

[0044] Figure 4 Schematic diagram of the arrangement of steel bars on a raft according to an embodiment of the present invention;

[0045] Figure 5 Schematic diagram of the rapid deployment of steel bar support according to one embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the dismantling of a temporary steel pipe support frame and the construction of wall column reinforcement according to an embodiment of the present invention;

[0047] Figure 7 The invention relates to the improvement of cooling pipes and temperature measuring lines and the acceptance of raft reinforcement bars in one embodiment of the invention. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] like Figure 1 As shown, the present invention provides a fast-deployed steel bar support for ultra-thick raft construction, comprising:

[0050] Support pole 2;

[0051] A retractable top support 1 is provided on the top of the support pole 2;

[0052] A bracket base 7 is provided at the bottom of the bracket upright 2;

[0053] A foldable support cross bar 5 is connected to the foldable support cross bar 5 via a hinge 3 .

[0054] Here, the thickness of the super-thick raft slab is greater than or equal to 4.0 m.

[0055] The support upright can be a full-length 8# channel steel, the upright is about 3.8m long, an adjustable top support is installed on the top of the upright, and a support bottom support is installed on the bottom. Because the spacing of the raft slab steel bars is generally 150mm×150mm, the net size of the support top support and bottom support is 120mm×120mm.

[0056] The lifting ring is located near the top of the bracket and is used for the rapid deployment of the bracket to lift and put it into place. When the steel bar bracket is lifted quickly, the foldable bracket cross bar 5 is folded and fixed. After the steel bar bracket is quickly deployed and lowered into the designated position for the construction of the ultra-thick raft slab, the top support is adjusted and welded to be fixed. The foldable bracket cross bar 5 is opened, and then the various brackets are welded and connected into a whole through the foldable bracket cross bar 5, thereby achieving the rapid construction of the ultra-thick raft slab steel bars and ensuring safety during the construction process. With the help of the prefabricated foldable rapid deployment steel bar bracket of the present invention, it plays the role of optimizing the construction process of the ultra-thick raft slab, increasing the speed of raft slab construction, solving safety problems, and improving construction quality. The rapid deployment bracket should be made according to the raft conditions of the specific project.

[0057] In one embodiment of the fast-deployable steel bar support for ultra-thick raft slab construction of the present invention, a clamping ring 4 for fixing a cooling pipe or a temperature control line is further provided on the support upright 2 .

[0058] In one embodiment of the fast-deployable steel bar support for ultra-thick raft slab construction of the present invention, the clamping rings 4 are arranged at intervals on the support uprights 2 .

[0059] Here, a clip for fixing the cooling pipe or temperature control line is provided every 500mm on the bracket upright. The cooling pipe or large-volume concrete temperature measuring line can be installed in advance according to project requirements. After the bracket is installed in place, the cooling pipes on each bracket are connected to each other to quickly form a raft cooling pipe network.

[0060] In one embodiment of the fast-deployable steel bar support for ultra-thick raft slab construction of the present invention, a metal water-stop ring 6 is further provided on the upper portion of the support upright 2 near the support base 7 .

[0061] Here, a metal water stop ring is provided on the support upright to prevent the raft plate from leaking next to the support upright in the later stage. Similarly, the net size of the metal water stop ring can be 120mm×120mm.

[0062] In one embodiment of the fast-deployable steel bar support for ultra-thick raft slab construction of the present invention, a lifting ring 8 is further provided on the support upright 2 near the telescopic jack 1 .

[0063] Here, the lifting ring is located near the top of the bracket and is used for quickly deploying the bracket to lift and put it into position.

[0064] In one embodiment of the fast-deployable steel bar support for ultra-thick raft slab construction of the present invention, the foldable support cross bars 5 are arranged at intervals on the support vertical bars 2 .

[0065] Here, a foldable support cross bar 5 can be symmetrically set on both sides of the support upright every 1500mm starting from 200mm from the bottom of the support upright. The foldable support cross bar 5 is 1200mm long and can be made of 5# channel steel.

[0066] like Figures 1 to 7 As shown, the specific steps of the construction scheme of the present invention for the rapid deployment of steel bar supports for ultra-thick raft construction are as follows:

[0067] Step 1: Determine the size and required quantity of the quick-deployment steel support for the ultra-thick raft slab construction according to the project raft slab conditions, manufacture the quick-deployment steel support for the ultra-thick raft slab construction according to the determined size and quantity in advance, and arrange the cooling pipe 18 and the temperature measuring line 19 on the support upright 2 in advance according to the plan and fix them with the clamp ring 4;

[0068] like Figure 3 As shown, step 2: tie the lower row of steel bars 11 on the bottom surface 9 of the raft slab, and set up a temporary steel pipe support frame 12 between the bottom surface 9 of the raft slab and the raft slab surface 10;

[0069] Here, the temporary steel pipe support frame is quick to erect, but the cost is high. The space inside the structure is not suitable for permanent support of raft reinforcement. Therefore, it is used as a temporary support frame to realize the early construction of raft reinforcement and improve the safety of raft construction process.

[0070] like Figure 4 and 5 As shown, step three: after the temporary steel pipe support frame 12 is erected, the horizontal protective net 14 is hung on the temporary steel pipe support frame 12, the upper row of steel bars 13 are tied to the lower part of the raft surface 10, and the quick deployment steel bar brackets 16 of each undeployed foldable bracket cross bar 5 are hoisted into place;

[0071] like Figure 6 As shown, step four: after the rapid deployment steel bar support is hoisted into place, the retractable top support 1 of each rapid deployment steel bar support 16 is connected to the bottom surface 9 of the raft slab, the support bottom support 7 of each rapid deployment steel bar support 16 is connected to the lower row of steel bars 11, and the foldable support cross bar 5 is opened to form a rapid deployment steel bar support 15 of each unfolded foldable support cross bar 5; by welding adjacent unfolded foldable support cross bars 5, each rapid deployment steel bar support 15 is connected into a whole, and necessary reinforcement measures are taken. After the reinforcement is completed, an acceptance inspection is organized;

[0072] like Figure 7 Said step five: after the acceptance of each quick deployment steel bar bracket 15 is completed, the temporary steel pipe support 12 is removed and the construction of the wall column dowel 17 on the upper part of the raft surface 10 is carried out;

[0073] Step 6: Turn on the power supply of the temperature measuring line 19, connect the cooling pipes on each quick-deployment steel bar support 15 and connect the water source, and pour the raft concrete on the quick-deployment steel bar support 15 connected into a whole.

[0074] The quick-deployment steel bar support for ultra-thick raft slab construction of the present invention includes: a support upright, a retractable top support, a lifting ring, a support bottom support, a foldable support cross bar, a metal water stop ring and a clamping ring for fixing a cooling pipe or a temperature control line, etc., which can meet the needs of raft slab projects with a thickness of more than 4.0m.

[0075] The rapid deployment steel bar support of the present invention not only saves the construction period of the raft slab, but also has the following characteristics:

[0076] 1. With the help of temporary steel pipe support frame, the safety of raft reinforcement construction can be improved.

[0077] 2. Rapid deployment of steel bar supports is prefabricated in advance. Compared with the foundation pit construction environment with high uncertainty, it can improve the support construction quality, improve the reliability of the support, and ensure the overall stability of the raft steel bars.

[0078] 3. With the help of rapid deployment of steel support brackets, systems such as bracket anti-seepage, large-volume concrete temperature measurement, and cooling water pipes can be integrated in advance to further ensure the construction quality and speed of ultra-thick raft slabs.

[0079] Compared with the existing construction method, the present invention has the following effects:

[0080] (1) The present invention can optimize the raft construction process and speed up the construction of ultra-thick rafts by using the application of the rapidly formed steel bar bracket, thus saving the construction period.

[0081] (2) The present invention adopts a modular semi-prefabricated steel bar bracket, which can deepen the bracket layout and optimize the bracket parameters in advance. At the same time, it is manufactured in a processing plant. Compared with the complex construction environment in the raft, the bracket construction quality is better and the bracket material investment can be saved.

[0082] (3) The present invention can improve the safety of raft construction, reduce the work and welding amount of raft supports, and reduce the hidden dangers of raft construction accidents.

[0083] (4) The present invention integrates a support waterproofing system, a large-volume concrete cooling system, and a temperature measurement system, thereby improving the construction quality of the raft while reducing the workload of the raft.

[0084] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0086] Obviously, those skilled in the art may make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A construction method for rapidly deploying steel bar supports for ultra-thick raft construction, characterized in that: include: Determine the size and required quantity of the quick-deployment steel support brackets for the construction of extra-thick raft slabs based on the project raft slab conditions, and manufacture the quick-deployment steel support brackets for the construction of extra-thick raft slabs in advance according to the determined size and quantity; Tie up the lower row of steel bars on the bottom surface of the raft slab and set up a temporary steel pipe support frame between the bottom surface and the surface of the raft slab; After the temporary steel pipe support frame is erected and the horizontal protective net is hung on the temporary steel pipe support frame, the upper row of steel bars is tied to the lower part of the raft surface, and the quick deployment steel bar brackets with the foldable bracket cross bars not deployed are hoisted into place; After the rapid deployment steel bar support is hoisted into place, the retractable top support of each rapid deployment steel bar support is connected to the raft surface, the support bottom support of each rapid deployment steel bar support is connected to the lower row of steel bars, and the foldable support cross bars are unfolded to form a rapid deployment steel bar support with each unfolded foldable support cross bar; the rapid deployment steel bar supports are connected into a whole by welding adjacent unfolded foldable support cross bars, and reinforcement measures are taken; After the reinforcement of each quick-deployment steel support is completed, the temporary steel pipe support is removed and the wall column reinforcement on the upper part of the raft surface is constructed; The raft concrete is poured on the fast-deployed steel reinforcement brackets that are connected into a whole.

2. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 1, wherein: Rapid deployment steel support for extra-thick raft construction is manufactured in advance according to the determined size and quantity, including: Make the support poles; A retractable top support is provided on the top of the support pole; A bracket base is provided at the bottom of the bracket upright; The foldable support cross bar is connected to the support vertical bar through a hinge.

3. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 2, wherein: After the rapid deployment steel support for extra-thick raft construction is manufactured in advance according to the determined size and quantity, it also includes: Place the cooling pipe and temperature measuring wire on the bracket pole in advance and fix them with clamps.

4. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 3, wherein: Before arranging the cooling pipe and temperature measuring wire on the support pole in advance and fixing them with the clamp ring, it also includes: The clamping rings are arranged at intervals on the support poles.

5. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 3, characterized in that: Before pouring raft concrete on the fast-deployed steel reinforcement brackets connected as a whole, it also includes: Turn on the power supply of the temperature measuring line, connect the cooling pipes on each quick-deployment steel bar support and connect the water source.

6. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 2, wherein: After the foldable support cross bar is connected to the foldable support cross bar through the hinge, the further comprising: A metal water stop ring is arranged on the upper portion of the support upright pole close to the support bottom bracket.

7. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 2, wherein: Lift each un-folded folding support crossbar into position with the quick-deployment reinforcement support, including: The quick-deployment steel bar supports of each foldable support cross bar that has not been unfolded are hoisted into place through the hoisting ring on the support upright near the telescopic top support.

8. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 2, wherein: Connecting the foldable support crossbar to the support upright via a hinge includes: The foldable support cross bars are arranged at intervals on the support vertical bars.

9. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 8, characterized in that: The foldable support cross bars are arranged at intervals on the support vertical bars, including: Starting from 200mm from the bottom of the support upright, a foldable support cross bar is symmetrically set on both sides of the support upright every 1500mm.

10. The construction method for rapidly deploying steel bar supports for ultra-thick raft construction according to claim 8, characterized in that: The cross bar of the foldable support is 1200 mm long and is made of channel steel.

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