A construction method of a reinforced concrete frame structure beam-column pulling

Abstract

The application relates to a construction method of a reinforced concrete frame structure beam-pulling column, which comprises the following steps: erecting a support frame at the bottom of a structure beam, wherein the support frame surrounds a structure column; providing a jack, setting the jack at the top of the support frame, starting the jack to top the structure beam; providing a support cushion, setting the support cushion between the support frame and the structure beam, and sticking the bottom of the support cushion to the bottom of the structure beam; chiseling the connecting part of the structure column and the structure beam, and chiseling the part of the structure beam corresponding to the structure column; providing a pouring mold, setting the pouring mold at the chiseled position of the structure beam, setting part of the support cushion in the pouring mold, pouring concrete in the pouring mold, removing the pouring mold and the support frame after the concrete solidifies; and removing the remaining part of the structure column.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a method for constructing a reinforced concrete frame structure with a beam-column support. Background Technology

[0002] In recent years, with the rapid development of the construction industry, the problem of urban aging has become increasingly prominent, and urban living needs have become increasingly diversified. To improve people's quality of life, the demolition, renovation, and reconstruction of old buildings have become particularly important. These buildings, due to their age, outdated layout, and long service life, are no longer suitable for the needs of modern society and even hinder urban development to some extent. Often, these buildings contain multiple structural columns, which occupy a certain amount of space, resulting in poor space utilization. Therefore, promoting the renovation of old buildings has become an inevitable trend. This not only improves the quality of life for residents but also promotes economic development, making it an important project for people's livelihood. However, current renovations of existing buildings mainly focus on energy-saving upgrades and often involve demolition and reconstruction, resulting in a large amount of construction waste, wasted human and material resources, and long construction cycles. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a method for constructing a beam-supported column removal structure in a reinforced concrete frame structure. By setting a support frame at the bottom of the structural beam and supporting the structural beam with jacks at the top of the support frame, it is easier to remove the structural column. Then, concrete is poured into the removed part to increase the overall strength of the structural beam.

[0004] A technical solution to achieve the above objectives is a method for constructing a beam-column support structure in a reinforced concrete frame structure, comprising the following steps:

[0005] A support frame is erected at the bottom of the structural beam, and the support frame is set up to surround the structural column;

[0006] A jack is provided, which is placed on top of the support frame, and the jack is activated to tighten the structural beam;

[0007] A support pad is provided and disposed between the support frame and the structural beam, with the bottom of the support pad fitting against the bottom of the structural beam;

[0008] Remove the connection between the structural column and the structural beam, and remove the portion of the structural beam corresponding to the structural column;

[0009] A casting template is provided and placed at the location where the structural beam is to be removed. Part of the support pad is placed inside the casting template. Concrete is poured inside the casting template. After the concrete has solidified, the casting template and the support frame are removed. Remove the remaining portion of the structural column.

[0010] Furthermore, when chiseling away the connection between the structural column and the structural beam, the structural column is chiseled away to below the top of the support frame.

[0011] Furthermore, when the structural beam is removed, the structural reinforcement inside the structural beam is retained, and when the casting template is set, the casting template is wrapped around the structural reinforcement.

[0012] Furthermore, when setting the casting template, stirrups are provided to connect the structural reinforcement and the support pad.

[0013] Furthermore, when dismantling the structural column, a wire saw is provided to dismantle the structural column in sections.

[0014] Furthermore, the top of the support pad has a through hole, and after removing the bottom longitudinal reinforcement in the structural beam, the bottom longitudinal reinforcement is inserted into the through hole of the support pad.

[0015] Furthermore, when pouring concrete within the casting formwork, an embedded stress monitor is provided. The embedded stress monitor is installed within the casting formwork to monitor the stress of the structural beam.

[0016] Furthermore, when tightening the structural beam using the jacks, the jacks are adjusted according to the bearing capacity of the structural columns.

[0017] Furthermore, after setting the support frame, several diagonal braces are provided and installed on the support frame.

[0018] Furthermore, when dismantling the structural column, a hoisting hole is erected at the structural column, and a crane is provided. The crane is controlled by a hoisting rope, which is connected to the hoisting hole to transfer the structural column.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] By setting up a support frame at the bottom of the structural beam and supporting the structural beam with jacks at the top of the support frame, it is easier to remove the structural column. Then, concrete is poured in the removed part to increase the overall strength of the structural beam. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of a method for constructing a reinforced concrete frame structure with a beam-column support.

[0022] Figure 2This is an overall structural diagram of the upper pad block in a method for constructing a beam-column support structure in a reinforced concrete frame structure.

[0023] Figure 3 This is a top-view rendering of a method for constructing a reinforced concrete frame structure with a beam-supported column.

[0024] Legend: 1. Support frame; 2. Jack; 31. Upper pad; 32. Lower pad; 4. Structural column. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] See Figure 1 A method for constructing a reinforced concrete frame structure with a supporting beam and column removal includes the following steps: erecting a support frame 1 at the bottom of the structural beam, the support frame 1 surrounding the structural column 4; providing a jack 2, placing the jack 2 on top of the support frame 1, and activating the jack 2 to tighten the structural beam; providing a support pad, placing the support pad between the support frame 1 and the structural beam, with the bottom of the support pad fitting against the bottom of the structural beam; chiseling away the connection between the structural column 4 and the structural beam, and chiseling away the portion of the structural beam corresponding to the structural column 4; providing a casting template, placing the casting template at the chiseling location of the structural beam, with a portion of the support pad placed inside the casting template; pouring concrete inside the casting template; after the concrete has solidified, removing the casting template and the support frame 1; and removing the remaining portion of the structural column 4.

[0027] In this invention, a preferred embodiment is as follows: Each structural column in the construction site is monitored to determine whether it is a load-bearing structure. Non-load-bearing structural columns are selected as the columns to be demolished. A support frame 1 is erected around the outer perimeter of the structural column 4 to be demolished. The support frame 1 consists of three parts: a steel support foundation, steel support frame 1 bodies, and a support platform. The steel support foundation is a frame formed by splicing I-beams, which surrounds the bottom of the support column. The steel support foundation is set on the ground of the construction area. Several steel support frame 1 bodies are set on top of the steel support foundation. Each steel support frame 1 body is composed of several steel pipes spliced ​​together, and the steel pipes are fixedly connected by flanges. The support platform is laid on top of the steel support frame 1 bodies. Support pads and jacks 2 are set on top of the support platform. Subsequently, several jacks 2 are set on the support platform, and the jacks 2 are set on both sides of the structural column 4. The jack 2 on the side simultaneously tightens the structural beam. Then, a support pad is placed on the support platform between the support platform and the structural beam, with the top of the support pad tightly against the bottom of the structural beam. Next, the connection between the structural column 4 and the structural beam is removed, and the position of the structural beam corresponding to the structural column 4 is also removed, creating a section to be constructed between the structural beams. A pouring formwork is erected at the section to be constructed. When erecting the pouring formwork, the support pad is poured together with the section to be constructed, so that the poured structural beam can be supported by the support frame 1 and the support pad, thus preventing the structural beam from collapsing. Then, concrete is poured into the pouring formwork. After the concrete solidifies, the pouring formwork and jack 2 are removed. Then, the remaining part of the structural column 4 is removed. By removing the excess structural column, the utilization rate of the available space in the construction site is increased.

[0028] Furthermore, the support pad is divided into two parts: an upper pad 31 and a lower pad 32. The upper pad 31 is made of steel profiles and has a reserved hole for the longitudinal reinforcement bars at the bottom of the beam. Its height is consistent with the bottom height of the enlarged section of the beam. The lower pad 32 is the distance from the bottom of the reinforced beam to the top of the support platform and is made of steel profiles or round pipes. The steel pad is placed on the platform beam and is tightly pressed against the bottom of the concrete beam. When setting up the pouring formwork, the upper pad 31 is placed inside the pouring formwork, while the lower pad 32 is supported on the top of the support frame 1.

[0029] Furthermore, when chiseling away the connection between the structural column 4 and the structural beam, the structural column 4 is chiseled away to below the top of the support frame 1. By placing the structural beam below the top of the support frame 1, it is easier to subsequently erect the casting formwork.

[0030] Furthermore, when removing the structural beam, the structural reinforcement bars inside the beam are retained, and when setting the casting formwork, the casting formwork is used to wrap the structural reinforcement bars. Preferably, to ensure the strength of the cast beam, the structural reinforcement bars can be lengthened according to the on-site construction requirements, so that the length anchored into the amount to be constructed is ≥0.35lab.

[0031] Furthermore, when setting the casting template, stirrups are provided to connect the structural reinforcement and the support pad. Preferably, the stirrups and the structural reinforcement are fixedly connected by welding to ensure a stable connection between the support pad and the structural reinforcement.

[0032] Furthermore, when dismantling the structural column 4, a wire saw is provided to dismantle the structural column 4 in sections. Preferably, the dismantling of the remaining column components should be carried out after the addition of new beams or the increase in beam cross-section. If the column to be dismantled consists of two layers, it needs to be dismantled layer by layer; concrete columns are cut in sections using a wire saw, and the column is marked with sections before cutting, with each cut not exceeding 600mm in height. Before cutting, hoisting holes or lifting holes are reserved in the dismantling section, and the hoisting holes or lifting holes should preferably penetrate the concrete column. After cutting, a chain hoist or winch is used to hoist the cut section to the designated position; the above steps are repeated until all the remaining column components are cut.

[0033] Furthermore, the top of the support pad has a through hole. After removing the bottom longitudinal reinforcement bars from the structural beam, the bottom longitudinal reinforcement bars are inserted into the through hole of the support pad. This through hole facilitates the fixed connection between the support pad and the structural beam, thereby facilitating subsequent pouring construction.

[0034] Furthermore, during concrete pouring within the formwork, an embedded stress monitor is provided. This embedded stress monitor is installed within the formwork to monitor the stress in the structural beam. The embedded stress monitor continuously monitors the stress within the structural beam, collecting data in real time over a period of one month. Beam deformation is observed using a level instrument, monitoring the beam deflection after column removal and support removal over a period of seven days.

[0035] Furthermore, when tightening the structural beam using the jack 2, the jack 2 is adjusted according to the bearing capacity of the structural column 4.

[0036] Furthermore, after setting the support frame 1, several diagonal braces are provided and set on the support frame 1.

[0037] Furthermore, when dismantling the structural column 4, a hoisting hole is erected at the structural column 4, and a crane is provided. The crane is controlled by a hoisting rope, which is connected to the hoisting hole to transfer the structural column 4.

[0038] The following describes the application process of the method for constructing a reinforced concrete frame structure beam-column extraction according to the present invention.

[0039] A support frame 1 is erected around the outer perimeter of the structural column 4 to be demolished. This support frame 1 consists of three parts: a steel support foundation, steel support frame 1 bodies, and a support platform. The steel support foundation is a frame constructed from I-beams, enclosing the bottom of the support column. The steel support foundation is placed on the ground of the construction area. Several steel support frame 1 bodies are installed on top of the steel support foundation. Each steel support frame 1 body is composed of several steel pipes connected by flanges. The support platform is laid on top of the steel support frame 1 bodies, and support pads and jacks 2 are installed on top of the support platform. Several jacks 2 are then installed on the support platform, positioned on both sides of the structural column 4. The jacks 2 on both sides simultaneously support the structural beams. The beam is tightened, and then a support pad is installed on the support platform between the support platform and the structural beam. The top of the support pad is close to the bottom of the structural beam. Then, the connection between the structural column 4 and the structural beam is removed, and the position of the structural beam corresponding to the structural column 4 is also removed, forming a section to be constructed between the structural beams. A pouring formwork is erected at the section to be constructed. When erecting the pouring formwork, the support pad is poured together with the section to be constructed, so that the poured structural beam can be supported by the support frame 1 and the support pad, thereby preventing the structural beam from collapsing. Then, concrete is poured into the pouring formwork. After the concrete has solidified, the pouring formwork and jack 2 are removed, and then the remaining part of the structural column 4 is removed.

[0040] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A method for constructing a beam-column support structure in a reinforced concrete frame structure, characterized in that, Includes the following steps: A support frame is erected at the bottom of the structural beam, and the support frame is set up to surround the structural column; A jack is provided, which is placed on top of the support frame, and the jack is activated to tighten the structural beam; A support pad is provided and disposed between the support frame and the structural beam, with the bottom of the support pad fitting against the bottom of the structural beam; Remove the connection between the structural column and the structural beam, and remove the portion of the structural beam corresponding to the structural column; A casting template is provided and placed at the location where the structural beam is to be removed. Part of the support pad is placed inside the casting template. Concrete is poured inside the casting template. After the concrete has solidified, the casting template and the support frame are removed. Remove the remaining portion of the structural column.

2. The method for constructing a reinforced concrete frame structure beam-column removal according to claim 1, characterized in that: in When chiseling away the connection between the structural column and the structural beam, the structural column is chiseled away to below the top of the support frame.

3. The method for constructing a reinforced concrete frame structure beam-column removal according to claim 1, characterized in that: in When the structural beam is removed, the structural reinforcement inside the structural beam is retained, and when the casting formwork is set, the casting formwork is wrapped around the structural reinforcement.

4. The method for constructing a reinforced concrete frame structure beam-column removal according to claim 2, characterized in that: When setting the casting template, stirrups are provided to connect the structural reinforcement and the support pad.

5. The method for constructing a reinforced concrete frame structure beam-column removal according to claim 1, characterized in that: When dismantling the structural column, a wire saw is provided to dismantle the structural column in sections.

6. The method for constructing a reinforced concrete frame structure beam-column removal according to claim 1, characterized in that: The top of the support pad has a through hole. After removing the bottom longitudinal reinforcement in the structural beam, the bottom longitudinal reinforcement is inserted into the through hole of the support pad.

7. The method for constructing a reinforced concrete frame structure beam-column removal according to claim 1, characterized in that: in When pouring concrete into the formwork, an embedded stress monitor is provided. The embedded stress monitor is installed inside the formwork to monitor the stress of the structural beam.

8. The method for constructing a reinforced concrete frame structure with a support beam and column as described in claim 1, characterized in that: When tightening the structural beam using the jacks, the jacks are adjusted according to the bearing capacity of the structural columns.

9. The method for constructing a reinforced concrete frame structure with a support beam and column as described in claim 1, characterized in that: After the support frame is set up, a number of diagonal braces are provided and the diagonal braces are installed on the support frame.

10. A method for constructing a reinforced concrete frame structure with a support beam and column according to claim 1, characterized in that: in When dismantling the structural column, a hoisting hole is erected at the structural column, and a crane is provided. The crane is controlled by a hoisting rope, which is connected to the hoisting hole to transfer the structural column.

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