阅读说明：本技术 一种用于无梁楼盖节点的柱帽及其布置方法 (Column cap for flat slab node and arrangement method thereof ) 是由 赖洪涛 王府昌 孙睿 唐嘉敏 单南平 林斯嘉 王越 陈冠新 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种用于无梁楼盖节点的柱帽,包括交叉梁、边梁；所述交叉梁的交叉位置设置在无梁楼盖节点的柱的上端,所述交叉梁外围设置有一圈边梁,且边梁与交叉梁远离交叉位置的端部固定连接；所述交叉梁与边梁之间形成多个孔洞；所述交叉梁的交叉位置与边梁的几何中心重合。本发明针对无梁楼盖布置方式对节点处暗梁施工困难以及竖向管道线路布置的不便,提供梁式柱帽,并在柱帽中设置孔洞的无梁楼盖节点布置方式,可以通过孔洞来解决管道线路的竖向布置问题；同时由于梁的存在,将无梁楼盖的冲切破坏形式转化为有成熟计算公式的剪切破坏形式,通过保证结构的抗剪切能力以提高无梁楼盖节点的安全性。(The invention discloses a column cap for a flat slab node, which comprises cross beams and edge beams; the crossing position of the crossing beam is arranged at the upper end of the column of the girderless floor system node, a circle of boundary beam is arranged on the periphery of the crossing beam, and the boundary beam is fixedly connected with the end part of the crossing beam far away from the crossing position; a plurality of holes are formed between the cross beam and the edge beam; the crossing position of the crossing beam is coincided with the geometric center of the boundary beam. The invention provides the beam-type column cap aiming at the difficulty of hidden beam construction at the node and the inconvenience of vertical pipeline line arrangement caused by the arrangement mode of the flat slab, and the arrangement mode of the flat slab node with the holes in the column cap can solve the problem of vertical arrangement of the pipeline line through the holes; meanwhile, due to the existence of the beam, the punching failure mode of the flat slab is converted into the shearing failure mode with a mature calculation formula, and the safety of the flat slab node is improved by ensuring the shearing resistance of the structure.)

1. The utility model provides a cap for having a beam superstructure node which characterized in that: comprises a cross beam and a boundary beam; the crossing position of the crossing beam is arranged at the upper end of the column of the girderless floor system node, a circle of boundary beam is arranged on the periphery of the crossing beam, and the boundary beam is fixedly connected with the end part of the crossing beam far away from the crossing position; a plurality of holes are formed between the cross beam and the edge beam; the crossing position of the crossing beam is coincided with the geometric center of the boundary beam.

2. The cap-post for a flat slab node of claim 1, wherein: the cross beam is a cross beam, the edge beam is a square edge beam, the cross beam and the edge beam form a Chinese character tian shape, and four holes are formed between the cross beam and the edge beam.

3. The cap-post for a flat slab node of claim 1, wherein: the junction of the cross beam and the boundary beam is provided with a hidden beam which extends outwards, and the hidden beam is arranged in a floor slab connected with the boundary beam.

4. The cap-post for a flat slab node of claim 1, wherein: the hole is used for vertically arranging pipeline lines, or the outer surface of the hole is provided with a layer of plugging plate.

5. The cap-post for a flat slab node of claim 1, wherein: the cross beam is an X-shaped cross beam.

6. The cap-post for a flat slab node of claim 1, wherein: the cross beam is a cross beam shaped like a Chinese character 'mi'.

7. The cap-post for a flat slab node of claim 1, wherein: the boundary beam is in a regular shape, and the regular shape comprises a circle, an ellipse, a diamond and a regular polygon.

8. The cap-post for a flat slab node of claim 1, wherein: the height of the side beams is not more than that of the cross beams.

9. The cap-post for a flat slab node of claim 1, wherein: the width of the crossed beam is not more than that of the column of the flat slab node.

10. The method of arranging caps for a flat slab node according to any of claims 1 to 9, comprising the steps of:

s1, fixing the template of the column cap on the column of the flat slab node;

s2, binding the reinforcement cages of the cross beam and the reinforcement cages of the side beams, placing the binding at the specified positions, arranging baffles around the holes, and then pouring concrete; if the holes are not needed, plugging is carried out by using a plugging plate which does not exceed the thickness of the floor slab, and finally a reinforced concrete beam type column cap is formed.

Technical Field

The invention relates to the field of constructional engineering, in particular to a column cap for a flat slab node and an arrangement method thereof.

Background

The flat slab is a structural form widely applied in building engineering, can mainly enlarge the clearance height or reduce the floor height, has better comprehensive economic benefit than the traditional beam slab structure, has the characteristic of direct force transmission path, and is widely applied to the underground garage structure.

The flat slab node is generally composed of slab columns, but is easy to be damaged by punching, and further to collapse continuously, so that great loss is caused. Meanwhile, in a flat slab structure, vertical pipeline lines are not easy to arrange.

Aiming at the problems, the prior art mainly aims at preventing damage by arranging a supporting plate or a hidden beam at a node, but the hidden beam construction has certain difficulty and is easy to ignore, and the problem of troublesome arrangement of vertical pipeline lines is not solved yet.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a column cap for a flat slab node, and provides a beam type column cap aiming at the difficulty in constructing a hidden beam at the node and the inconvenience in the arrangement of a vertical pipeline line in a flat slab arrangement mode, and the arrangement mode of the flat slab node with holes in the column cap can solve the problem of the vertical arrangement of the pipeline line through the holes; meanwhile, due to the existence of the beam, the punching failure mode of the flat slab is converted into the shearing failure mode with a mature calculation formula, and the safety of the flat slab node is improved by ensuring the shearing resistance of the structure.

Another object of the present invention is to provide a method of arranging caps for a flat slab node.

The purpose of the invention is realized by the following technical scheme:

a column cap for a flat slab node comprises cross beams and edge beams; the crossing position of the crossing beam is arranged at the upper end of the column of the girderless floor system node, a circle of boundary beam is arranged on the periphery of the crossing beam, and the boundary beam is fixedly connected with the end part of the crossing beam far away from the crossing position; a plurality of holes are formed between the cross beam and the edge beam; the crossing position of the crossing beam is coincided with the geometric center of the boundary beam.

Preferably, the cross beam is a cross beam, the edge beam is a square edge beam, the cross beam and the edge beam form a Chinese character tian shape, and four holes are formed between the cross beam and the edge beam.

Preferably, the junction of the cross beam and the edge beam is provided with a hidden beam extending outwards, and the hidden beam is arranged in a floor slab connected with the edge beam.

Preferably, the holes are used for vertically arranging pipeline lines, or the outer surfaces of the holes are provided with a layer of plugging plates. When certain reserved holes do not need to be vertically provided with pipeline lines, the whole block is carried out by using a blocking plate (thin plate) which does not exceed the thickness of the floor slab; when certain reserved holes are vertically arranged on pipeline lines and do not need such large hole space, the holes can be partially blocked by blocking plates (thin plates) which do not exceed the thickness of the floor slab.

Preferably, the cross beam is an X-shaped cross beam.

Preferably, the cross beam is a cross beam shaped like a Chinese character 'mi'.

Preferably, the edge beam is in a regular shape, and the regular shape includes a circle, an ellipse, a diamond shape, and a regular polygon.

Preferably, the height of the side beams is not greater than the height of the cross beams.

Preferably, the width of the cross beam is not greater than the width of the column of the flat slab node.

The other purpose of the invention is realized by the following technical scheme:

a method for arranging caps for a flat slab node, comprising the steps of:

s1, fixing the template of the column cap on the column of the flat slab node;

s2, binding the reinforcement cages of the cross beam and the reinforcement cages of the side beams, placing the binding at the specified positions, arranging baffles around the holes, and then pouring concrete; if the holes are not needed, plugging is carried out by using a plugging plate which does not exceed the thickness of the floor slab, and finally a reinforced concrete beam type column cap is formed.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. compared with the existing common flat slab, the invention effectively converts the punching failure mode of the flat slab into the shearing failure mode with a mature calculation formula by arranging the beam type column caps, and improves the safety of the flat slab node by ensuring the shearing resistance of the structure.

2. Compared with the prior common frame beam floor, the invention keeps the beam-free floor node, ensures the clearance height of the floor outside the node and effectively compresses the structure height.

3. Compared with the existing common flat slab, the flat slab is provided with the holes at the joints, so that the vertical arrangement of pipeline lines is facilitated, the workload of arranging the pipeline lines on site is reduced, and the construction period is shortened.

Drawings

Figure 1 is a top cross-sectional view of a cap for a flat slab node according to the present invention, the cap not being connected to a surrounding floor slab.

Fig. 2 is a top sectional view of a cap for a flat slab node according to the present invention, the cap being coupled to a peripheral floor slab.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a sectional view taken along line B-B of fig. 2.

Wherein the reference numerals have the following meanings:

1-field beam column cap, 2-column without beam floor node, 3-cross beam, 4-edge beam, 5-hole, 6-hidden beam, 7-floor.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

Referring to fig. 1-4, the column cap is a cross-shaped beam column cap 1, the cross-shaped beam column cap 1 comprises a cross beam 3 arranged at the upper end of a column 2 of the flat slab node and a circle of boundary beams 4 surrounding the cross beam end, and four holes 5 are formed between the cross beam 3 and the boundary beams 4. The boundary beam 4 is square, and the cross beam 3 and the boundary beam 4 are square.

According to the structural requirements, a hidden beam 6 is arranged in the floor 7 connected with the Chinese character tian-shaped beam type column cap 1 along the direction of the cross beam 3.

The cross-shaped cross beams 3 and the side beams 4 are required to be in accordance with the regulations of concrete structure design specifications (GB50010-2010), building structure earthquake-resistant design specifications (GB50011-2010) and high-rise building concrete structure technical specifications (JGJ3-2010) in terms of cross-sectional area, distance and position of longitudinal reinforcements and stirrups.

And when holes are not reserved at the positions of the reserved holes 5, plugging is carried out by using plugging plates not exceeding the thickness of the floor slab.

The width of the edge beam 4 is not less than 300 mm.

The height of the edge beam 4 is not more than that of the cross beam 3.

When the flat-roof beam-free floor joint is manufactured on site, firstly, a template of a flat-roof beam-type beam column cap 1 is fixed on a column 2 of the flat-roof beam-free floor joint, then a reinforcement cage of a cross beam 3 and a reinforcement cage of a side beam 4 are bound and placed at a specified position, baffles can be arranged around a hole 5, then concrete pouring is carried out, if the hole 5 is not needed, a plugging plate which does not exceed the thickness of a floor slab is used for plugging, and finally, the flat-roof beam-type beam column cap 1 made of reinforced concrete is formed. The flat slab node effectively converts the punching failure form of the flat slab into the shearing failure form with a mature calculation formula by arranging the Chinese character 'tian' -shaped beam type column cap, and improves the safety of the flat slab node by ensuring the shearing resistance of the structure; the clear height of the structure is ensured; the holes are reserved so that the pipelines and the lines can be conveniently arranged along the vertical direction of the structure, the workload of laying the pipelines and the lines is reduced, and the effect of shortening the construction period is achieved.

In the embodiment, the cross beams and the square frames form the beam type column caps in a shape like a Chinese character tian, which is the optimal embodiment of the invention, the construction is convenient, and the force transmission is direct.

However, the shapes of the cross beam and the frame are not limited to this, as long as the intersection position of the cross beam coincides with the geometric center of the edge beam:

the shape of the crossed beam can be formed by crossing N beams (N is more than or equal to 2), and the crossed angle can be in various forms, for example, when N is 2, two beams are mutually perpendicular and form a cross shape, and the included angle of the two beams is not 90 degrees and form an X shape; when N is 3, the included angle between two adjacent beams may be 60 ° or other angles; when N is 4, the included angle between two adjacent beams may be 45 °, in this case, the included angle is in a shape of a Chinese character mi, or another angle may be used.

The boundary beam is in a regular shape, and the regular shape comprises a circle, an ellipse, a diamond and a regular polygon.

The cross beam and the boundary beam can be randomly combined, and simultaneously, better stress combination can be considered: for example, when the frame is a regular polygon, each beam of the cross beam is set as much as possible to be perpendicular to the frame of the contacted regular polygon, and the end part of each beam of the cross beam is not preferentially connected with the vertex of the regular polygon; for another example, when N beams are crossed to form a cross beam and a regular polygon frame is selected, the number of sides of the regular polygon is preferably 2N.

Meanwhile, the further preferable scheme is as follows: the width of the crossed beam is not more than that of the column of the flat slab node. The reasons for this design are: the shearing resistance is related to the beam width of the cross beam, but when the width of the cross beam is larger than the column width of the column of the flat slab node, the shearing resistance of the beam at the column edge cannot be improved, and in order to avoid that a designer wrongly calculates the shearing resistance capacity due to the arrangement of the wide flat beam of the cross beam, the proposal is to maintain the beam width of the cross beam not larger than the column width of the column of the flat slab node, so as to ensure the shearing resistance safety.

When the beam width of the cross beam is smaller than the column width of the column of the girderless floor system node, the formed holes are not standard rectangles and can be described as quasi-rectangles, in fact, four holes can be formed for vertical piping of equipment, if the size of the piping does not need to be large, the piping can be partially plugged, and the piping holes of the equipment can be arranged as required.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.