Construction method of giant transfer beam with super long span

Abstract

The invention discloses a method for constructing a giant transfer beam with an ultra-large span, comprising the following steps: 1: excavating earthwork and pouring a cushion layer (2) below a transfer beam (1); 2: laying a bottom brick membrane (31) on both sides of the transfer beam; 3: constructing a waterproofing membrane (4) on the cushion layer and constructing it to the top of the bottom brick membrane; 4: placing a transfer beam support frame (5) on the cushion layer and tying the transfer beam steel bars (6); 5: constructing the waterproofing membrane on the transfer beam steel bars; 6: completing the brick membrane (3); 7: backfilling earthwork (8); 8: pouring a raft area cushion layer (9) on the brick membrane and earthwork, and constructing the waterproofing membrane on the raft area cushion layer; 9: tying the raft steel bars (10) on the raft area cushion layer and pouring concrete, and simultaneously pouring the raft (11) and the transfer beam into an integrated structure. The invention can solve the problems in the prior art of easy collapse of the brick membrane during earthwork backfilling and difficulty in tying the transfer beam steel bars in a narrow space.

Description

Technical Field

[0001] The invention relates to a building structure construction method, in particular to a construction method for a giant transfer beam with an ultra-large span. Background Art

[0002] The construction process of the super-large span rectangular transfer beam in the existing technology is: earth excavation → cushion layer → brick membrane construction → earth backfilling → waterproof membrane construction → steel bar binding of transfer beam and surrounding raft slab → concrete pouring. When backfilling the earth after the brick membrane construction is completed, the brick membrane is prone to collapse due to the high earth pressure. At the same time, the construction area of the transfer beam is small after the earth is backfilled, and it is difficult to bind the steel bars of the transfer beam in the narrow space, which leads to the easy generation of rough surfaces and holes in the transfer beam after the concrete is poured, affecting the construction quality of the transfer beam. Therefore, it is necessary to provide a construction method for super-large span giant transfer beams that can solve the problems of easy collapse of brick membranes during earth backfilling and difficulty in binding the steel bars of the transfer beam in the narrow space in the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide a construction method for giant transfer beams with ultra-large spans, which can solve the problems in the prior art of easy collapse of brick membranes during earth backfilling and difficulty in tying steel bars of transfer beams in narrow spaces.

[0004] The present invention is achieved in that:

[0005] A method for constructing a giant transfer beam with an ultra-large span comprises the following steps:

[0006] Step 1: Excavate to the bottom elevation of the transfer beam and pour the cushion layer under the transfer beam;

[0007] Step 2: Lay the bottom brick membrane on both sides of the transfer beam construction area;

[0008] Step 3: Apply waterproof membrane on the cushion layer, and extend the waterproof membrane to the top of the bottom brick membrane;

[0009] Step 4: Place the transfer beam support frame in the transfer beam construction area on the cushion layer, and tie the transfer beam reinforcement in the transfer beam construction area;

[0010] Step 5: Apply the waterproof membrane on top of the bottom brick membrane to the transfer beam reinforcement;

[0011] Step 6: Complete the brick membrane;

[0012] Step 7: Backfill the soil between the outside of the brick membrane and the slope;

[0013] Step 8: Pour the raft area cushion layer on the brick membrane and earthwork, and install the waterproof membrane on the top of the transfer beam reinforcement onto the raft area cushion layer;

[0014] Step 9: Tie the raft reinforcement and pour concrete on the raft area cushion layer. The raft and transfer beam are cast simultaneously into an integrated structure.

[0015] The laying height of the bottom brick membrane is 50 cm.

[0016] The cross section of the conversion beam support frame is in a U-shape, and the conversion beam support frame is arranged along the length direction of the conversion beam.

[0017] The waterproof coiled material is overlapped on the top of the transfer beam reinforcement so that the waterproof coiled material wraps the transfer beam reinforcement.

[0018] The brick membrane is built to the bottom elevation of the cushion layer in the raft area.

[0019] The earthwork is backfilled to the bottom elevation of the cushion layer in the raft area.

[0020] The top surface of the transfer beam support frame and the top surface of the transfer beam reinforcement are both located inside the raft slab.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention adjusts the construction sequence among the conversion beam reinforcement binding process, the waterproof membrane laying process and the brick membrane laying process. By laying the bottom brick membrane, the limitation of the brick membrane on the conversion beam reinforcement binding space is avoided, the difficulty of binding the reinforcement of the super-large span giant conversion beam is reduced, and the casting quality problems such as rough surfaces and holes are effectively avoided. The construction progress can be better controlled, which is conducive to improving construction efficiency.

[0023] 2. The present invention is provided with a transfer beam support frame, which can improve the bending and shear bearing capacity of the super-large span giant transfer beam, thereby achieving the safety and construction convenience of the super-large span giant transfer beam.

[0024] 3. Since the raft slab and the transfer beam are cast simultaneously, the casting quality of the transfer beam can be ensured, the bending and shear bearing capacity of the super-large span giant transfer beam can be further improved, and the construction is more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a construction schematic diagram of steps 1 to 3 in the method for constructing a giant transfer beam with an ultra-large span according to the present invention;

[0026] Figure 2 This is a construction diagram of step 4 in the method for constructing a giant transfer beam with an ultra-large span according to the present invention;

[0027] Figure 3 It is a construction schematic diagram of steps 5 to 6 in the method for constructing a giant transfer beam with an ultra-large span according to the present invention;

[0028] Figure 4 Schematic diagram of the construction of steps 7 and 8 in the method for constructing a giant transfer beam with an ultra-large span according to the present invention;

[0029] Figure 5 This is a schematic diagram of the raft reinforcement binding construction in step 9 of the method for constructing a giant transfer beam with an ultra-large span according to the present invention;

[0030] Figure 6 It is a schematic diagram of the concrete pouring construction of step 9 in the construction method of the giant transfer beam with an ultra-large span of the present invention.

[0031] In the figure, 1 is transfer beam, 2 is cushion layer, 3 is brick membrane, 31 is bottom brick membrane, 4 is waterproof membrane, 5 is transfer beam support frame, 6 is transfer beam reinforcement, 7 is slope, 8 is earthwork, 9 is raft area cushion layer, 10 is raft reinforcement, 11 is raft. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] A method for constructing a giant transfer beam with an ultra-large span comprises the following steps:

[0034] Please see the attached Figure 1 , Step 1: Excavate to the bottom elevation of the transfer beam 1 and pour the cushion layer 2 under the transfer beam 1.

[0035] Preferably, the earth excavation can adopt the slope excavation technology of the existing technology, and the earth excavation construction is carried out according to the construction drawings of the transfer beam 1, which will not be described in detail here.

[0036] Please see the attached Figure 1 , Step 2: Build the bottom brick membrane 31 on both sides of the construction area of the transfer beam 1.

[0037] Preferably, the masonry height of the bottom brick membrane 31 is 50 cm. The masonry of the bottom brick membrane 31 adopts conventional technology, which will not be described in detail here.

[0038] The bottom brick membrane 31 is a partial brick membrane, which is convenient for the subsequent construction of the waterproof membrane 4 and the conversion beam support frame 5. The height of the bottom brick membrane 31 is relatively low, which does not affect the binding construction space of the conversion beam steel bars 6, facilitates the steel bar binding operation, and reduces the difficulty of the steel bar binding construction.

[0039] Please see the attached Figure 1 Step 3: construct the waterproof membrane 4 on the cushion layer 2, and the waterproof membrane 4 is constructed to the top of the bottom brick membrane 31.

[0040] The waterproof membrane 4 can be selected from waterproof materials of appropriate specifications on the market according to the engineering design requirements. The waterproof membrane is laid on the cushion layer 2 to ensure the waterproofing of the bottom of the conversion beam 1. The waterproof membrane 4 is temporarily overlapped to the top of the bottom brick membrane 31, which can not only protect the bottom brick membrane 31, but also facilitate the use of the waterproof membrane 4 in subsequent construction.

[0041] Please see the attached Figure 2 , Step 4: Place the transfer beam support frame 5 in the construction area of the transfer beam 1 on the cushion layer 2, and tie the transfer beam steel bars 6 in the construction area of the transfer beam 1.

[0042] Preferably, the cross section of the conversion beam support frame 5 is in a U-shape, and the conversion beam support frame 5 is arranged along the length direction of the conversion beam 1 .

[0043] Preferably, the transfer beam support frame 5 can be made of steel sections, and the size and shape of the transfer beam support frame 5 can be made according to the size and load-bearing requirements of the transfer beam 1. The setting of the transfer beam support frame 5 is used to improve the bending and shear bearing capacity of the transfer beam 1.

[0044] Please see the attached Figure 3 Step 5: construct the waterproof membrane 4 on the top of the bottom brick membrane 31 onto the transfer beam steel bars 6.

[0045] Preferably, the waterproof membrane 4 is overlapped on the top of the conversion beam steel bars 6 so that the waterproof membrane 4 wraps the conversion beam steel bars 6.

[0046] The waterproof membrane 4 is temporarily overlapped on the transfer beam steel bar 6, which can provide protection for the transfer beam steel bar 6 and the transfer beam support frame 5, and also facilitate the subsequent masonry construction of the brick membrane 3.

[0047] Please see the attached Figure 3 , Step 6: Complete the brick membrane 3.

[0048] Preferably, the brick membrane 3 is built to the bottom elevation of the raft area cushion layer 9. The brick membrane 3 is built using conventional technology and will not be described in detail here.

[0049] Please see the attached Figure 4 , Step 7: Backfill earth 8 between the outside of the brick membrane 3 and the slope 7.

[0050] Preferably, the earthwork 8 is backfilled to the bottom elevation of the cushion layer 9 in the raft area.

[0051] Since the brick membrane 3 has been built and has good lateral pressure resistance, the conversion beam steel bars 6 and the conversion beam support frame 5 have also been completed, which can provide effective inner support for the brick membrane 3, and the backfill of the earth 8 will not cause the collapse of the brick membrane 3.

[0052] By adjusting the construction sequence between the conversion beam steel bar 6 tying process, the waterproof membrane 4 laying process and the brick membrane 3 masonry process, the present invention can reduce the construction difficulty of giant conversion beams with ultra-large spans, solve the problems of easy collapse of the brick membrane 3 and difficulty in tying the conversion beam steel bars 6 in the prior art, and improve construction efficiency.

[0053] Preferably, the BIM technology of the existing technology can be used to adjust the binding of the conversion beam steel bars 6, the masonry height of the bottom brick membrane 31, and the laying process of the waterproof membrane, optimize the construction process, avoid process interference, ensure construction safety and reduce construction difficulty.

[0054] Please see the attached Figure 4 Step 8: Cast the raft area cushion layer 9 on the brick membrane 3 and earthwork 8, and construct the waterproof membrane 4 on the top of the transfer beam steel bar 6 onto the raft area cushion layer 9.

[0055] After the raft pad 9 is cast, the waterproofing membrane 4 temporarily overlapped on the top of the transfer beam reinforcement 6 is laid on the raft pad 9 to ensure the waterproofing of the raft 11.

[0056] Please see the attached Figure 5 and attached Figure 6 , Step 9: Tie the raft slab steel bars 10 on the raft slab cushion layer 9 and pour concrete. The raft slab 11 and the transfer beam 1 are simultaneously poured into an integrated structure.

[0057] Preferably, the top surface of the transfer beam support frame 5 and the top surface of the transfer beam reinforcement 6 are both located inside the raft 11 .

[0058] The raft 11 and the transfer beam 1 are cast simultaneously, which further ensures the bending and shear bearing capacity of the transfer beam 1, simplifies the construction process, and improves the construction efficiency.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for constructing a giant transfer beam with an ultra-large span, characterized by: The following steps are involved: Step 1: Excavate to the bottom elevation of the transfer beam (1) and pour the cushion layer (2) below the transfer beam (1); Step 2: Lay the bottom brick membrane (31) on both sides of the construction area of the transfer beam (1); Step 3: constructing a waterproofing membrane (4) on the cushion layer (2), and constructing the waterproofing membrane (4) to the top of the bottom brick membrane (31); Step 4: placing a transfer beam support frame (5) in the construction area of the transfer beam (1) on the cushion layer (2), and tying the transfer beam reinforcement (6) in the construction area of the transfer beam (1); Step 5: Apply the waterproofing membrane (4) on top of the bottom brick membrane (31) to the transfer beam reinforcement (6); Step 6: Complete the brick membrane (3); Step 7: backfilling earth (8) between the outside of the brick membrane (3) and the slope (7); Step 8: pouring the raft area cushion layer (9) on the brick membrane (3) and the earthwork (8), and constructing the waterproof membrane (4) on the top of the transfer beam steel bar (6) onto the raft area cushion layer (9); Step 9: Tie the raft slab reinforcement (10) on the raft slab area cushion (9) and pour concrete. The raft slab (11) and the transfer beam (1) are simultaneously poured into an integrated structure.

2. The method for constructing a giant transfer beam with an ultra-large span according to claim 1 is characterized by: The laying height of the bottom brick membrane (31) is 50 cm.

3. The method for constructing a giant transfer beam with an ultra-large span according to claim 1 is characterized by: The cross section of the conversion beam support frame (5) is in the shape of a square, and the conversion beam support frame (5) is arranged along the length direction of the conversion beam (1).

4. The method for constructing a giant transfer beam with an ultra-large span according to claim 1 is characterized by: The waterproof coiled material (4) is overlapped on the top of the conversion beam steel bar (6), so that the waterproof coiled material (4) wraps the conversion beam steel bar (6).

5. The method for constructing a giant transfer beam with an ultra-large span according to claim 1 is characterized by: The brick membrane (3) is built to the bottom elevation of the cushion layer (9) in the raft area.

6. The method for constructing a giant transfer beam with an ultra-large span according to claim 1 is characterized by: The earthwork (8) is backfilled to the bottom elevation of the raft area cushion layer (9).

7. The method for constructing a giant transfer beam with an ultra-large span according to claim 1 is characterized by: The top surface of the transfer beam support frame (5) and the top surface of the transfer beam reinforcement (6) are both located inside the raft slab (11).

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