Construction method for enabling embedded steel bars of constructional column to completely avoid beam bottom load-bearing steel bars

Abstract

The invention provides a construction method for enabling constructional column embedded steel bars to completely avoid beam bottom load-bearing steel bars, and relates to the technical field of constructional column embedded steel bar construction. The construction method comprises the steps that wood blocks are fixed to corresponding embedded steel bar point positions at the beam bottom, in the concrete pouring process, threading pipes with the two ends blocked are placed in the positions of constructional column longitudinal steel bars to be subjected to spot welding with stirrups, the threading pipes are broken open, and the longitudinal steel bars and the stirrups are welded; and steel bars are planted at the positions, corresponding to the wood blocks, of the beam bottom, and finally masonry construction and constructional column formwork pouring are conducted. Working efficiency can be improved, the degree of damage to a main body structure beam bottom steel bar protection layer can be weakened, and meanwhile vertical zero lap joint of longitudinal bars of the constructional column is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of structural column reinforcement construction, in particular to a construction method for achieving structural column reinforcement that completely avoids stress-bearing steel bars at the bottom of a beam. Background Art

[0002] During the process of reinforcement fabrication and installation of structural columns in frame-shear residential projects, the method of drilling holes in the concrete surface of the main structure and planting reinforcement for secondary overlap and binding is generally adopted. On the one hand, due to the dense reinforcement at the bottom of the beam, it is often impossible to avoid the stressed reinforcement when drilling, and multiple holes have to be drilled. The success rate of drilling in one time is often less than 70%, with low work efficiency and damage to the protective layer of the reinforcement at the bottom of the beam. On the other hand, the secondary overlap caused by planting reinforcement separately above and below results in a lot of steel waste. Summary of the invention

[0003] In view of the above-mentioned prior art, the present invention proposes a construction method for achieving structural column rebar planting that completely avoids the stress-bearing steel bars at the bottom of the beam.

[0004] The present invention provides a construction method for achieving structural column planting reinforcement completely avoiding the stress-bearing steel bars at the bottom of the beam, comprising the following steps: Step 1: During the process of supporting the formwork and binding the reinforcement, refer to the detailed drawing of the structural column, fix the wooden block of the size of the steel bar head to the corresponding beam bottom reinforcement point on the beam bottom formwork, ensure that the beam bottom reinforcement point is set in the gap of the beam bottom reinforcement, and construct the beam bottom reinforcement drilling holes according to the beam bottom reinforcement point; Step 2: During the pouring of the main structure concrete, a threading tube matching the diameter of the longitudinal reinforcement of the structural column is used, the threading tube is cut into the length of the reinforcement depth and the pipe openings at both ends are sealed, and the threading tube is pressed into the reinforcement point on the top of the beam before the initial setting of the concrete, in accordance with the structural column deepening drawing; Step 3: During the secondary structure construction, break the upper pipe opening of the threading tube, bend the longitudinal reinforcement of the structural column with stirrups slightly and insert it into the threading tube, tie the stirrups except the bottom group, lift the longitudinal reinforcement of the structural column upward and insert it into the reinforcement drilling hole at the bottom of the beam, and at the same time, temporarily fix the longitudinal reinforcement of the structural column to the bottom group of stirrups by spot welding to prevent the longitudinal reinforcement of the structural column from sinking, fill the upper and lower ends with reinforcement glue respectively, and finally carry out masonry construction and structural column formwork casting.

[0005] Preferably, in step 1, the wooden blocks are made by cutting waste formwork from the construction site.

[0006] Preferably, in step 2, the threading tube is made of metal material.

[0007] Preferably, in step 3, a reinforcing bar drill bit is used to break open the upper pipe opening of the threading pipe.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention proposes a construction method for realizing the planting of reinforcement in structural columns completely avoiding the load-bearing reinforcement at the bottom of beams, which can solve the problems of low efficiency of drilling holes for planting reinforcement in structural columns at the bottom of beams and waste of vertical overlap of materials, and realize that the drilling holes for planting reinforcement at the bottom of beams 100% avoid the bottom reinforcement, thereby improving work efficiency and reducing the degree of damage to the protective layer of the reinforcement at the bottom of the main structure beam, while achieving vertical zero overlap of the longitudinal reinforcement of the structural columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The present invention is a construction schematic diagram of a construction method for realizing a construction column embedded reinforcement that completely avoids the stress-bearing reinforcement at the bottom of the beam in an embodiment of the present invention.

[0010] Among them, 1. wooden block; 2. beam bottom formwork; 3. beam bottom steel bar; 4. wire threading tube. DETAILED DESCRIPTION

[0011] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0012] Embodiment 1: A construction method for achieving structural column reinforcement completely avoiding the stress-bearing steel bars at the bottom of the beam, such as Figure 1 As shown, the following steps are included: Step 1: During the construction of the main structure, use the waste formwork on the construction site to cut wooden blocks 1 the size of the steel bar head. During the process of supporting the formwork and binding the reinforcement, refer to the structural column deepening drawing to fix the wooden blocks 1 to the corresponding beam bottom reinforcement points on the beam bottom formwork 2, and ensure that the beam bottom reinforcement points are all set in the gaps between the beam bottom steel bars 3. After the concrete pouring and maintenance is completed and the formwork is removed, obvious reinforcement points will be formed on the concrete surface of the beam bottom. The beam bottom reinforcement drilling holes are constructed according to the beam bottom reinforcement points, which can completely avoid the load-bearing steel bars at the bottom of the beam.

[0013] Step 2: During the pouring of the main structure concrete, use a metal threading tube 4 that matches the diameter of the longitudinal reinforcement of the structural column. Cut the threading tube 4 into the length of the reinforcement depth and seal the pipe ends. According to the structural column deepening drawing, press the threading tube 4 into the reinforcement point on the top of the beam before the concrete begins to set.

[0014] Step 3: During the secondary structure construction, use a reinforcement drill to gently break open the upper pipe opening of the threading tube 4, bend the entire longitudinal reinforcement of the structural column with the stirrups slightly and insert it into the threading tube 4, tie up the stirrups except the bottom group, lift the longitudinal reinforcement of the structural column upward and insert it into the reinforcement drilling hole at the bottom of the beam, and at the same time, temporarily fix the longitudinal reinforcement of the structural column and the bottom group of stirrups by spot welding to prevent the longitudinal reinforcement of the structural column from sinking, fill the upper and lower ends with reinforcement glue respectively, and finally carry out masonry construction and structural column formwork casting.

[0015] This application uses small wooden blocks made from waste formwork to accurately position the embedded reinforcement of the structural column at the bottom of the beam, 100% avoiding the load-bearing reinforcement at the bottom of the beam, and selects the cheapest metal wire threading tube to be buried in the top surface of the beam in advance, forming a reserved hole with a depth of twice the embedded reinforcement. When tying the reinforcement of the structural column, the longitudinal reinforcement of the height of the structural column + 2 times the length of the embedded reinforcement can be directly selected and slightly bent to insert into the bottom embedded reinforcement depth, and then lifted up and inserted into the embedded reinforcement drill hole at the bottom of the beam, and then fixed with glue, finally achieving zero overlap of the longitudinal reinforcement of the structural column, saving steel while improving the integrity of the structural column reinforcement and minimizing the damage to the concrete protective layer at the bottom of the beam.

[0016] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent schemes made using the contents of the present invention specification, directly or indirectly applied in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. A construction method for achieving structural column reinforcement completely avoiding the stress-bearing steel bars at the bottom of the beam, characterized in that: The steps include: Step 1: During the process of supporting the formwork and binding the reinforcement, refer to the detailed drawing of the structural column, fix the wooden block of the size of the steel bar head to the corresponding beam bottom reinforcement point on the beam bottom formwork, ensure that the beam bottom reinforcement point is set in the gap of the beam bottom reinforcement, and construct the beam bottom reinforcement drilling holes according to the beam bottom reinforcement point; Step 2: During the pouring of the main structure concrete, a threading tube matching the diameter of the longitudinal reinforcement of the structural column is used, the threading tube is cut into the length of the reinforcement depth and the pipe openings at both ends are sealed, and the threading tube is pressed into the reinforcement point on the top of the beam before the initial setting of the concrete, in accordance with the structural column deepening drawing; Step 3: During the secondary structure construction, break the upper pipe opening of the threading tube, bend the longitudinal reinforcement of the structural column with stirrups slightly and insert it into the threading tube, tie the stirrups except the bottom group, lift the longitudinal reinforcement of the structural column upward and insert it into the reinforcement drilling hole at the bottom of the beam, and at the same time, temporarily fix the longitudinal reinforcement of the structural column to the bottom group of stirrups by spot welding to prevent the longitudinal reinforcement of the structural column from sinking, fill the upper and lower ends with reinforcement glue respectively, and finally carry out masonry construction and structural column formwork casting.

2. The construction method for achieving structural column planting of reinforcement completely avoiding the stress-bearing reinforcement at the bottom of the beam as claimed in claim 1 is characterized in that: In step 1, the wooden blocks are made by cutting waste formwork from the construction site.

3. The construction method for achieving structural column planting of reinforcement completely avoiding the stress-bearing reinforcement at the bottom of the beam as claimed in claim 1 or 2, characterized in that: In step 2, the threading tube is made of metal material.

4. The construction method for achieving structural column rebar planting completely avoiding the stress-bearing steel bars at the bottom of the beam as claimed in claim 1 or 2, characterized in that: In step 3, the upper pipe opening of the threading pipe is broken open using a reinforcement drill bit.

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