阅读说明：本技术 一种高、低圈梁结构及其施工方法 (High-low ring beam structure and construction method thereof ) 是由 董有 鞠树森 于 2021-09-28 设计创作，主要内容包括：本发明涉及一种高、低圈梁结构及其施工方法,主要是为了增强结构的抗倒塌能力和外墙圈梁的整体闭合性。包括上部外加圈梁、下部外加圈梁、外加构造柱；所述的上部外加圈梁、下部外加圈梁通过外加构造柱进行连接,并沿楼四周形成整体闭合；所述的上部外加圈梁和外加构造柱通过L型连接筋、圈梁纵向钢筋、构造柱主筋、构造柱箍筋、圈梁箍筋整体浇筑在一起；所述的下部外加圈梁和外加构造柱通过L型连接筋、圈梁纵向钢筋、构造柱主筋、构造柱箍筋、圈梁箍筋整体浇筑在一起。(The invention relates to a high and low ring beam structure and a construction method thereof, which mainly aim to enhance the collapse resistance of the structure and the integral closure of an outer wall ring beam. Comprises an upper external ring beam, a lower external ring beam and an external constructional column; the upper externally-added ring beam and the lower externally-added ring beam are connected through an externally-added constructional column and are integrally closed along the periphery of the building; the upper external ring beam and the external constructional column are integrally cast together through an L-shaped connecting rib, a ring beam longitudinal steel bar, a constructional column main rib, a constructional column stirrup and a ring beam stirrup; the lower external ring beam and the external constructional column are integrally cast together through L-shaped connecting ribs, ring beam longitudinal steel bars, constructional column main ribs, constructional column stirrups and ring beam stirrups.)

1. A high and low ring beam structure and a construction method thereof are characterized in that: comprises an upper external ring beam (1), a lower external ring beam (2) and an external constructional column (3); the upper externally-added ring beam (1) and the lower externally-added ring beam (2) are connected through an externally-added constructional column (3) and are integrally closed along the periphery of the building; the upper external ring beam (1) and the external constructional column (3) are integrally cast together through an L-shaped connecting rib (6), a ring beam longitudinal steel bar (4), a constructional column main rib (7), a constructional column stirrup (8) and a ring beam stirrup (5); the lower external ring beam (2) and the external constructional column (3) are integrally cast together through an L-shaped connecting rib (6), a ring beam longitudinal steel bar (4), a constructional column main rib (7), a constructional column stirrup (8) and a ring beam stirrup (5); the concrete strength grades of the upper external ring beam (1), the lower external ring beam (2) and the external constructional column (3) are not lower than C35.

2. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the longitudinal steel bar (4) of the ring beam is hot rolled steel bar of 4 phi 12 grade HBP300 or HRB335 grade.

3. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the main reinforcement (7) of the constructional column is hot-rolled steel bar of 4 phi 12 grade HBP300 or HRB335 grade.

4. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the L-shaped connecting rib (6) is a hot-rolled steel bar with the grade of 4 phi 12 HBP300 or HRB 335.

5. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the lap joint length of the L-shaped connecting rib (6) in the externally-added constructional column (3) is not less than 35 times of the diameter of the steel bar.

6. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the ring beam stirrup (5) and the constructional column stirrup (8) are hot rolled steel bars with phi [email protected] grade of HBP300 or HRB 335.

7. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the distance H between the upper externally-added ring beam (1) and the lower externally-added ring beam (2) is not more than 600mm, stirrups in the range of 500mm above and below the joint of the upper externally-added ring beam (1) and the lower externally-added ring beam (2) are required to be encrypted, and the distance is not more than 100 mm.

8. The high and low ring beam structure and the construction method thereof according to claim 1, wherein: the height of the cross sections of the upper externally-added ring beam (1) and the lower externally-added ring beam (2) is not less than 180mm, the width of the cross sections of the upper externally-added ring beam and the lower externally-added ring beam is not less than 120mm, the thickness of the cross section of the externally-added constructional column (3) is 180mm as high as the cross section of the upper externally-added ring beam (1) and the lower externally-added ring beam (2), and the width of the externally-added constructional column (3) is 240 mm.

9. The high and low ring beam structure and the construction method thereof according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:

the method comprises the following steps: and (5) blanking the reinforcing steel bars according to a design drawing.

Step two: before construction, the shortness alkali, oil stain or the veneer layer of the wall surface is removed, and the wall surface to be constructed is plastered and reinforced.

Step three: the method comprises the steps of arranging longitudinal ring beam reinforcements (4), ring beam stirrups (5), L-shaped connecting reinforcements (6), constructional column main reinforcements (7) and constructional column stirrups (8) before pouring an upper external ring beam (1), a lower external ring beam (2) and an external constructional column (3), and supporting a template.

Step four: and after the inspection is qualified, integrally pouring concrete on the upper external ring beam (1), the lower external ring beam (2) and the external constructional column (3).

Technical Field

The invention relates to a high and low ring beam structure and a construction method thereof, belonging to the technical field of comprehensive reconstruction of existing buildings.

Background

At present, masonry structure houses are the main structural form in the existing buildings in China, and account for more than sixty percent of civil buildings. However, the basic materials and connection mode of the masonry structure determine the shortages of brittle property, small deformation capability, poor seismic performance and the like of the structure, and the seismic damage is serious in the earthquake of all times. Therefore, the research on the seismic reinforcement of masonry structures is an important problem to be solved in the current structural engineering. The most common reinforcement method of masonry structures is an earthquake-resistant reinforcement method that an outer wall adopts reinforced concrete ring beams, constructional columns and inner transverse walls with steel pull rods, and the reinforcement method is safe and reliable after multiple earthquake verifications, and particularly the anti-structural collapse capability is obviously improved, so the reinforcement method is often adopted in earthquake-resistant reinforcement. Although the reinforcement method is practical, some nodes need to be researched in practical engineering, and the invention mainly aims at the nodes of the high and low ring beam structures and the construction method thereof.

Disclosure of Invention

The invention provides a high and low ring beam structure and a construction method thereof, which are mainly used for enhancing the collapse resistance of the structure and the integral closure of an outer wall ring beam.

The technical scheme of the invention is as follows:

a high, low ring beam structure and its construction method, including the upper portion adds the ring beam, lower portion adds the ring beam, adds the constructional column; the upper externally-added ring beam and the lower externally-added ring beam are connected through an externally-added constructional column and are integrally closed along the periphery of the building; the upper external ring beam and the external constructional column are integrally cast together through an L-shaped connecting rib, a ring beam longitudinal steel bar, a constructional column main rib, a constructional column stirrup and a ring beam stirrup; the lower external ring beam and the external constructional column are integrally cast together through L-shaped connecting ribs, ring beam longitudinal steel bars, constructional column main ribs, constructional column stirrups and ring beam stirrups.

Furthermore, the concrete strength grades of the upper external ring beam, the lower external ring beam and the external constructional column are not lower than C35.

Further, the longitudinal steel bar of the ring beam is hot rolled steel bar of 4 phi 12 HBP300 or HRB335 grade.

Further, the main reinforcement of the constructional column is hot-rolled steel reinforcement of HBP300 or HRB335 grade of 4 phi 12.

Furthermore, the L-shaped connecting rib is a hot-rolled steel bar of 4 phi 12 HBP300 or HRB335 grade.

Furthermore, the lap joint length of the L-shaped connecting rib in the externally-added constructional column is not less than 35 times of the diameter of the steel bar.

Furthermore, the ring beam stirrup and the construction column stirrup are hot rolled steel bars with the grade of phi [email protected] HBP300 or HRB 335.

Further, the distance H between the upper outer ring beam and the lower outer ring beam is not more than 600 mm. The stirrups in the upper and lower 500mm range at the joint of the upper externally-added ring beam and the lower externally-added ring beam are required to be encrypted, and the distance is not more than 100 mm.

Furthermore, the height of the cross section of the upper external ring beam and the lower external ring beam is not less than 180mm, and the width of the cross section of the upper external ring beam and the lower external ring beam is not less than 120 mm.

Furthermore, the thickness of the section size of the additional constructional column and the height of the section size of the additional ring beam are 180mm, and the width of the additional constructional column is 240 mm.

The high and low ring beam structure and the construction method thereof adopt the following steps:

the method comprises the following steps: and (5) blanking the reinforcing steel bars according to a design drawing.

Step two: before construction, the shortness alkali, oil stain or the veneer layer of the wall surface is removed, and the wall surface to be constructed is plastered and reinforced.

Step three: and arranging the longitudinal reinforcements of the ring beam, the hoop reinforcements of the ring beam, the L-shaped connecting reinforcements, the main reinforcements of the constructional column and the hoop reinforcements of the constructional column before pouring the upper external ring beam, the lower external ring beam and the external constructional column, and supporting the template.

Step four: and after the inspection is qualified, integrally pouring concrete on the upper external ring beam, the lower external ring beam and the external constructional column.

Has the advantages that:

the most obvious advantage of the invention is that the upper externally-added ring beam, the lower externally-added ring beam and the externally-added constructional column are integrally cast, so that the upper externally-added ring beam and the lower externally-added ring beam are connected through the externally-added constructional column and integrally closed along the periphery of the building, the structures are reliably connected with each other in a pulling way, the common stress is ensured, and the rigidity mutation of each layer is prevented.

Drawings

Fig. 1 is a plan view of a high and low ring beam structure.

In the figure, 1: the upper part is externally added with a ring beam; 2: a ring beam is externally added at the lower part; 3: externally adding a constructional column; 4: longitudinal steel bars of the ring beam; 5: a hoop beam; 6: l-shaped connecting ribs; 7: constructing a column main rib; 8: and constructing the column stirrup.

Detailed Description

A high and low ring beam structure and a construction method thereof are disclosed, and refer to figure 1, the structure comprises an upper external ring beam 1, a lower external ring beam 2 and an external constructional column 3; the upper externally-added ring beam 1 and the lower externally-added ring beam 2 are connected through an externally-added constructional column 3 and are integrally closed along the periphery of the building; the upper external ring beam 1 and the external constructional column 3 are integrally cast together through an L-shaped connecting rib 6, a ring beam longitudinal steel bar 4, a constructional column main rib 7, a constructional column stirrup 8 and a ring beam stirrup 5; the lower external ring beam 2 and the external constructional column 3 are integrally poured together through an L-shaped connecting rib 6, a ring beam longitudinal steel bar 4, a constructional column main rib 7, a constructional column stirrup 8 and a ring beam stirrup 5.

Furthermore, the concrete strength grades of the upper external ring beam 1, the lower external ring beam 2 and the external constructional column 3 are not lower than C35.

Further, the longitudinal steel bar 4 of the ring beam is hot rolled steel bar of 4 phi 12 grade HBP300 or HRB335 grade.

Further, the constructional column main reinforcement 7 is a hot-rolled steel reinforcement of HBP300 or HRB335 grade of 4 phi 12.

Furthermore, the L-shaped connecting rib 6 is a hot rolled steel bar of 4 phi 12 grade HBP300 or HRB 335.

Further, the lap joint length of the L-shaped connecting rib 6 in the externally-added constructional column 3 is not less than 35 times of the diameter of the steel bar.

Furthermore, the ring beam stirrup 5 and the constructional column stirrup 8 are hot-rolled steel bars with phi [email protected] grade of HBP300 or HRB 335.

Further, the distance H between the upper outer ring beam 1 and the lower outer ring beam 2 is not more than 600 mm. The stirrups in the upper and lower 500mm ranges at the joint of the upper externally added ring beam 1 and the lower externally added ring beam 2 are required to be encrypted, and the distance is not more than 100 mm.

Furthermore, the height of the sections of the upper external ring beam 1 and the lower external ring beam 2 is not less than 180mm, and the width is not less than 120 mm.

Furthermore, the thickness of the cross section of the externally-added constructional column 3 is 180mm as high as that of the upper externally-added ring beam 1 and the lower externally-added ring beam 2, and the width of the externally-added constructional column is 240 mm.

The high and low ring beam structure and the construction method thereof adopt the following steps:

the method comprises the following steps: and (5) blanking the reinforcing steel bars according to a design drawing.

Step two: before construction, the shortness alkali, oil stain or the veneer layer of the wall surface is removed, and the wall surface to be constructed is plastered and reinforced.

Step three: and arranging a longitudinal ring beam steel bar 4, a ring beam stirrup 5, an L-shaped connecting bar 6, a main constructional column steel bar 7 and a constructional column stirrup 8 before pouring the upper external ring beam 1, the lower external ring beam 2 and the external constructional column 3, and supporting the formworks.

Step four: and after the inspection is qualified, integrally pouring concrete on the upper external ring beam 1, the lower external ring beam 2 and the external constructional column 3.

The above is a typical embodiment of the present invention, and the specific implementation of the present invention is not limited thereto.