阅读说明：本技术 用于连接附属结构与劲性混凝土梁的节点结构及施工方法 (Node structure for connecting auxiliary structure and stiffened concrete beam and construction method ) 是由 徐磊 耿涛 凌泽高 赵健 李婷婷 于 2021-09-22 设计创作，主要内容包括：本发明提供了一种用于连接附属结构与劲性混凝土梁的节点结构及施工方法,属于建筑施工技术领域,用于提供劲性型钢结构节点,使附属结构的预埋件与劲性混凝土梁有效结合。它包括劲性混凝土结构、附属结构预埋件、型钢骨、连接件,劲性混凝土结构内预埋所述型钢骨,型钢骨上设有型钢骨加劲肋,型钢骨顶端通过连接件连接附属结构预埋件,附属结构预埋件通过预埋件锚筋锚固于劲性混凝土结构上。新型节点结构避免了幕墙、钢连桥等附属结构预埋件预埋空间不足,传力不可靠的难题,以及后植筋方法对主体型钢混凝土梁的破坏不安全因素。该节点结构有效的连接预埋板与型钢骨,节点制造简单,施工方便,传力可靠。(The invention provides a node structure for connecting an auxiliary structure and a stiff concrete beam and a construction method, belongs to the technical field of building construction, and is used for providing a stiff section steel structure node so as to effectively combine an embedded part of the auxiliary structure and the stiff concrete beam. The steel skeleton reinforced concrete structure comprises a stiff concrete structure, an auxiliary structure embedded part, a profile steel skeleton and a connecting part, wherein the profile steel skeleton is embedded in the stiff concrete structure, the profile steel skeleton is provided with a profile steel skeleton stiffening rib, the top end of the profile steel skeleton is connected with the auxiliary structure embedded part through the connecting part, and the auxiliary structure embedded part is anchored on the stiff concrete structure through an embedded part anchor bar. The novel node structure avoids the difficult problems of insufficient embedded space of auxiliary structure embedded parts such as curtain walls, steel connecting bridges and the like and unreliable force transmission and unsafe factors of damage of a post-bar planting method to the main body type steel concrete beam. The node structure effectively connects the embedded plate and the steel skeleton, and has the advantages of simple node manufacture, convenient construction and reliable force transmission.)

1. The node structure for connecting the auxiliary structure and the stiff concrete beam is characterized by comprising a stiff concrete structure, an auxiliary structure embedded part, a profile steel rib and a connecting piece, wherein the profile steel rib is embedded in the stiff concrete structure, the profile steel rib is provided with a profile steel rib stiffening, the top end of the profile steel rib is connected with the auxiliary structure embedded part through the connecting piece, and the auxiliary structure embedded part is anchored on the stiff concrete structure through an embedded part anchor bar.

2. The node structure for connecting an auxiliary structure to a stiff concrete beam according to claim 1, further comprising rubber mounts disposed above the auxiliary structure embedments.

3. The joint structure for connecting an attachment structure to a stiff concrete beam according to claim 1, wherein the form steel ribs are further provided with stressed steel bars therearound, the stressed steel bars including longitudinal steel bars and stirrups wrapped around the form steel ribs.

4. A node structure for connecting an auxiliary structure to a stiff concrete beam according to claim 1, characterised in that said auxiliary structure comprises curtain walls and steel bridges.

5. A construction method for a node structure connecting an auxiliary structure with a stiff concrete beam according to any one of claims 1 to 4, characterized by comprising the steps of:

step S1, comprehensively considering the positioning, the style size and the stress condition of the embedded part of the external auxiliary structure in the steel skeleton deepening design process of the stiffened concrete beam and column;

step S2, performing primary matching connection according to the pattern size of the auxiliary structure embedded part and the combination of the corresponding stiff concrete steel bones;

s3, comprehensively considering the arrangement and the construction interpenetration of stressed steel bars and unstressed steel bars in different directions in the stiffened concrete structure, comprehensively considering space collision avoidance, and optimizing a connecting plate and space arrangement between an embedded part of an auxiliary structure and the section steel framework; an anchor bar of the embedded part is reserved under the embedded part of the auxiliary structure and anchored into concrete, and the connecting piece is connected with the upper flange of the profile steel rib; the connecting pieces are arranged in a comb shape, and transverse and longitudinal spaces formed among the connecting pieces can accommodate and arrange longitudinal steel bars and stirrups wrapping the steel ribs and the longitudinal steel bars;

step S4, carrying out finite element stress analysis on the section steel nodes, and carrying out reliability analysis on the thickness and arrangement of the connecting plate;

step S5, after the deepened design analysis of the section steel node, combining the design of a stiff concrete structure and the design of an auxiliary structure product, and then carrying out factory processing on the section steel skeleton component;

and step S6, firstly installing the steel ribs on the construction site, binding the steel bars, pouring stiff concrete, and installing corresponding auxiliary structure supports after the strength of the stiff concrete structure is met.

6. The construction method according to claim 1, wherein the non-stressed steel bars in the step S1 include longitudinal bars, anti-torsion wales, and construction wales.

Technical Field

The invention relates to the technical field of building construction, in particular to a node structure for connecting an auxiliary structure and a stiffened concrete beam and a construction method.

Background

With the progress of the times and the rapid development of economy, various irregular super-limit high-rise continuous leap appears. In order to effectively utilize the building height and optimize the building shape, a stiff concrete structure is preferably selected as the structural form. But the section sizes of the beam and the column with the stiff structure are limited, and the section sizes of the steel ribs in the beam and the column with the stiff concrete are continuously increased and thickened, so that the anchoring connection space is smaller and smaller, and the influence on the embedded parts of the external auxiliary structure is larger and larger. On the other hand because affiliated structures such as curtain, steel connecting bridge belong to relevant professional producer's deepened design, processing and installation construction, asynchronous with strength nature concrete structure design, corresponding affiliated structure is just installed to the main structure construction completion usually, if the construction of earlier stage is reserved pre-buried not in place, later stage installation company can only adopt the mode of back planting bar anchor, must can cause structural damage to strength nature concrete structure, and limited pre-buried space has also left the potential safety hazard for affiliated structure.

Therefore, a novel stiffening type steel structure node needs to be developed, so that the embedded part of the auxiliary structure is effectively combined with the stiffening concrete beam.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information is prior art that is known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a node structure for connecting an auxiliary structure and a stiff concrete beam and a construction method, and the novel node structure avoids the problems of insufficient embedded space and unreliable force transmission of embedded parts of the auxiliary structure such as a curtain wall, a steel connecting bridge and the like and unsafe factors of damage of a post-bar planting method to a main body type steel concrete beam. The node structure effectively connects the embedded plate and the steel skeleton, and has the advantages of simple node manufacture, convenient construction and reliable force transmission.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a node structure for connecting an auxiliary structure and a stiff concrete beam,

the steel rib reinforced concrete structure comprises a stiff concrete structure, an auxiliary structure embedded part, a profile steel rib and a connecting piece, wherein the profile steel rib is embedded in the stiff concrete structure, a profile steel rib stiffening rib is arranged on the profile steel rib, the top end of the profile steel rib is connected with the auxiliary structure embedded part through the connecting piece, and the auxiliary structure embedded part is anchored on the stiff concrete structure through an embedded part anchor bar.

Further, still include the rubber support, the rubber support sets up in the top of affiliated structure built-in fitting. The upper parts of the embedded parts of the auxiliary structures can be provided with rubber supports to bear pedestrian overpass supports or directly support curtain wall supports, large-span roof supports and the like.

Furthermore, a stressed steel bar is arranged around the section steel rib and comprises a longitudinal steel bar and a stirrup wrapping the section steel rib in a surrounding mode. The stressed steel bar comprises a longitudinal steel bar and a stirrup surrounding the wrapping type steel rib, the steel rib is effectively converted into a steel-reinforced concrete structure, and the steel-reinforced concrete structure is effectively connected with the steel bar in the stiff concrete structure and transmits force. The finished concrete structure keeps the same appearance form with the stiffened concrete structure, thereby avoiding the cost of later-stage anti-corrosion treatment, corrosion treatment and the like caused by the exposure of the steel skeleton and improving the durability, stress reliability and durability of the structure.

Further, the auxiliary structure comprises a curtain wall and a steel connecting bridge.

The invention also provides a construction method for the joint structure for connecting the auxiliary structure and the stiffened concrete beam, which comprises the following steps:

step S1, comprehensively considering the positioning, the style size and the stress condition of the embedded part of the external auxiliary structure in the steel skeleton deepening design process of the stiffened concrete beam and column;

step S2, performing primary matching connection according to the pattern size of the auxiliary structure embedded part and the combination of the corresponding stiff concrete steel bones;

s3, comprehensively considering the arrangement and the construction interpenetration of stressed steel bars and unstressed steel bars in different directions in the stiffened concrete structure, comprehensively considering space collision avoidance, and optimizing a connecting plate and space arrangement between an embedded part of an auxiliary structure and the section steel framework; an anchor bar of the embedded part is reserved under the embedded part of the auxiliary structure and anchored into concrete, and the connecting piece is connected with the upper flange of the profile steel rib; the connecting pieces are arranged in a comb shape, and transverse and longitudinal spaces formed among the connecting pieces can accommodate and arrange longitudinal steel bars and stirrups wrapping the profiled steel ribs and the longitudinal steel bars, so that the embedded part anchor bars, the connecting pieces, the profiled steel bars and the longitudinal steel bars and the stirrups in the stiff concrete structure are ensured to form a complete integrated structure;

step S4, carrying out finite element stress analysis on the section steel nodes, and carrying out reliability analysis on the thickness and arrangement of the node connecting plate;

step S5, after the deepened design analysis of the section steel node, combining the design of a stiff concrete structure and the design of an auxiliary structure product, and then carrying out factory processing on the section steel skeleton component;

and S6, firstly installing the steel ribs on a construction site, pouring stiff concrete after binding the steel bars, and installing corresponding auxiliary structure supports after the structural strength is met.

Further, the non-stressed steel bars in the step S1 include longitudinal bars, anti-torsion wales, and structural wales.

Compared with the prior art, the invention has the beneficial technical effects that:

according to the joint structure for connecting the auxiliary structure and the stiff concrete beam and the construction method, the mutual correlation between the stiff concrete structure and the auxiliary structure is comprehensively considered in the deepening design of the section steel joint, the reliable connecting piece is designed, and the effective connection of the structures is guaranteed. The steel skeleton is creatively utilized to connect the embedded part of the auxiliary structure, so that the reliable force transmission is ensured; and the stiff concrete structure, such as surrounding longitudinal bars and stirrups in the stiff concrete beam, is utilized to powerfully wrap the profile steel ribs and the auxiliary structure embedded parts, and the structural construction is completed to ensure that the auxiliary structure embedded parts and the stiff concrete structure are combined into a whole. The steel skeleton is once processed, and on-spot once is watered and is smash and can satisfy strength nature concrete structure and additional structure and use jointly, avoids additional structure built-in fitting secondary construction, avoids the destruction of atress reinforcing bar in the opposite force nature concrete structure, reduces the safe risk, can not destroy strength nature concrete structure and accomplish the face. The safety and reliability of the section steel node are ensured from the design source; the section steel nodes are processed in factories, the product quality is reliable, the processing precision is controllable, the reserved space of the section steel nodes is sufficient, and the arrangement and the alternate construction of the reinforcing steel bars in the stiffened concrete beam and the column are facilitated; the product quality is supervised and controlled from production, processing and field installation by multiple sections and departments. The design in advance, integrated processing, the construction is reliable, and the installation is convenient. The hidden danger that each professional designs separately and constructs respectively and interferes with each other to influence the safety of the stiff concrete structure is avoided. Moreover, repeated construction of the rigid concrete structure after the auxiliary structure is planted with the steel bars is avoided, and the engineering cost is increased. The section steel node is prefabricated in a factory, and is green and environment-friendly in construction.

Drawings

Fig. 1 is a plan view of an attachment structure embedment for connecting an attachment structure to a node structure of a stiff concrete beam in accordance with an embodiment of the present invention;

fig. 2 is a plan view of an embedded part of a node structure for connecting an attachment structure and a stiff concrete beam according to an embodiment of the present invention;

fig. 3 is an elevational cross-sectional view of a reinforced concrete structure for connecting an attachment structure to a node structure of a stiff concrete beam according to an embodiment of the present invention;

fig. 4 is a side sectional view of a steel reinforced concrete structure for a structure of a node structure for connecting an attachment structure with a stiff concrete beam according to an embodiment of the present invention.

In the figure:

1-reinforcing steel bars at the upper parts of the brackets of the stiffened concrete beam; 2-accessory structure embedded parts, 21-embedded part anchor bars and 22-connecting pieces; 3-steel skeleton, 31-steel skeleton stiffening rib; 5-reinforcing steel bars at the lower parts of the brackets of the stiffened concrete beam; 6-a rubber support; 7-air holes.

Detailed Description

The joint structure and construction method for connecting an attachment structure to a stiff concrete beam according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.

Example one

The structural composition of the node structure for connecting an attachment structure with a stiff concrete beam according to the present invention will be described in detail with reference to fig. 1 to 4.

Referring to fig. 1 to 4, a node structure for connecting an auxiliary structure and a stiff concrete beam includes an auxiliary structure embedded part 2, a steel skeleton 3 and a connecting part 22, wherein the steel skeleton 3 is embedded in the stiff concrete structure, the steel skeleton 3 is provided with a steel skeleton stiffening rib 31, the top end of the steel skeleton 3 is connected with the auxiliary structure embedded part 2 through the connecting part 22, and the auxiliary structure embedded part 2 is anchored on the stiff concrete structure through an embedded part anchor bar 21.

In the embodiment, it is further preferable that a rubber mount 6 is further included, and the rubber mount 6 is disposed above the attachment structure embedded part 2, and the rubber mount 6 is used for ensuring the installation firmness of the upper attachment structure.

Still be equipped with bleeder vent 7 on the additional structure built-in fitting 2, this bleeder vent 7 is used for guaranteeing that large tracts of land additional structure built-in fitting 2 below concrete placement waters and smashes closely knit, avoids remaining the air and can't get rid of the formation bubble to guarantee the pouring quality of concrete.

In this embodiment, it is more preferable that a stressed steel bar is further disposed around the steel skeleton 3, and the stressed steel bar includes a longitudinal steel bar and a stirrup surrounding the steel skeleton 3. The stressed steel bar comprises a longitudinal steel bar and a stirrup surrounding the wrapped steel skeleton 3, the steel skeleton 3 is effectively converted into a steel skeleton concrete structure, and the steel skeleton concrete structure is effectively connected with the steel bar in the stiffened concrete structure and transmits force. The appearance form of the concrete structure is kept consistent with that of a stiff concrete structure after the concrete structure is finished, the cost of later-stage anti-corrosion treatment, corrosion treatment and the like caused by the exposure of the steel skeleton 3 is avoided, and the durability, stress reliability and durability of the structure are improved. In this embodiment, the longitudinal reinforcements mainly include upper stiffening concrete beam corbel reinforcements 1 and lower stiffening concrete beam corbel reinforcements 5, as follows.

In this embodiment, the attachment structure more preferably comprises a curtain wall and a steel bridge.

With continued reference to fig. 1 to 4, the present invention also provides a construction method of a node structure for connecting an attachment structure with a stiff concrete beam, the construction method including the steps of:

step S1, comprehensively considering the positioning, the style size and the stress condition of the embedded part of the external auxiliary structure in the deepening design process of the section steel framework 3 of the stiffened concrete beam and column;

step S2, according to the pattern size of the accessory structure embedded part 2, combining the corresponding steel skeleton 3 to carry out preliminary matching connection;

step S3, comprehensively considering the arrangement and the construction interpenetration of stressed steel bars in different directions, namely longitudinal steel bars and non-stressed steel bars, in the stiffened concrete structure, comprehensively considering space collision avoidance, and optimizing the connecting plates 22 and the space arrangement between the embedded parts 2 of the auxiliary structure and the steel skeleton 3; an embedded part anchor bar 21 reserved below the embedded part 2 of the auxiliary structure is anchored into concrete, and a connecting piece 22 is connected with the upper flange of the steel skeleton 3; the connecting pieces 22 are arranged in a comb shape and can be arranged in multiple rows and multiple columns, and transverse and longitudinal spaces formed among the connecting pieces 22 can accommodate and arrange longitudinal steel bars and stirrups wrapping the steel ribs 3 and the longitudinal steel bars, so that the embedded part anchor bars 21, the connecting pieces 22, the steel ribs 3 and the longitudinal steel bars and the stirrups in the stiff concrete structure are ensured to form a complete integrated structure;

step S4, carrying out finite element stress analysis on the section steel nodes, and carrying out reliability analysis on the thickness and arrangement of the connecting plate 22;

step S5, after the steel section nodes are deeply designed and analyzed, combining the design of a stiff concrete structure and the design of an auxiliary structure of the stiff concrete structure, and then carrying out factory processing on the steel section ribs 3 components;

step S6, the construction site is firstly provided with the steel skeleton 3, the steel reinforcement stressed steel bars and the steel reinforcement non-stressed steel bars are bound, then the stiff concrete is poured, and after the strength of the stiff concrete structure is met, the corresponding auxiliary structure support, such as the rubber support 6, is provided.

In this embodiment, it is more preferable that the non-stressed steel bars in step S1 include longitudinal bars, anti-torsion wales, and construction wales.

The above description is only illustrative of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications of the above disclosure by those skilled in the art are within the scope of the appended claims.