阅读说明：本技术 大直径钢管柱柱脚的连接结构及其施工方法 (Connecting structure of large-diameter steel pipe column base and construction method thereof ) 是由 魏建勋 白玉庆 田伟 邹仙德 吕文 于 2020-04-27 设计创作，主要内容包括：本发明涉及一种大直径钢管柱柱脚的连接结构,预埋于混凝土柱的顶部且部分露出的固定件,该固定件的露出部分与混凝土柱的顶面平齐；可拆卸地安装于底座的底部的支架,该支架内固设有部分自支架的顶部向外凸伸的钢筋笼,该钢筋笼的凸伸部分对应穿设于筒体,通过焊接连接支架与固定件,使得柱脚固定于混凝土柱的顶部；以及浇筑形成于混凝土柱顶部的混凝土结构,该底座、支架与固定件均埋设于混凝土结构内并形成一体结构。本发明有效地解决了超高层建筑中柱脚安装困难的问题,避免了长时间高空作业,可在地面先行绑扎钢筋,保证施工质量,保证柱脚处的强度。(The invention relates to a connecting structure of a column base of a large-diameter steel pipe column, which comprises a fixing piece, a connecting piece and a connecting piece, wherein the fixing piece is embedded in the top of the concrete column and partially exposed, and the exposed part of the fixing piece is flush with the top surface of the concrete column; the support is detachably arranged at the bottom of the base, a reinforcement cage with a part protruding outwards from the top of the support is fixedly arranged in the support, the protruding part of the reinforcement cage correspondingly penetrates through the cylinder, and the support and the fixing piece are connected through welding so that the column base is fixed at the top of the concrete column; and a concrete structure formed at the top of the concrete column in a pouring manner, wherein the base, the bracket and the fixing piece are all buried in the concrete structure to form an integral structure. The invention effectively solves the problem of difficult installation of the column foot in the super high-rise building, avoids long-time high-altitude operation, can bind the reinforcing steel bars on the ground in advance, ensures the construction quality and ensures the strength of the column foot.)

1. The utility model provides a connection structure of major diameter steel-pipe column base, its characterized in that, the column base is installed in the top of existing concrete column, the column base includes the barrel and is fixed in the base that the barrel bottom just stretched to the evagination, connection structure includes:

the fixing piece is embedded in the top of the concrete column and partially exposed, and the exposed part of the fixing piece is flush with the top surface of the concrete column;

the support is detachably arranged at the bottom of the base, a reinforcement cage which partially protrudes outwards from the top of the support is fixedly arranged in the support, the protruding portion of the reinforcement cage correspondingly penetrates through the barrel, and the support and the fixing piece are connected through welding, so that the column base is fixed to the top of the concrete column; and

and a concrete structure formed at the top of the concrete column is poured, and the base, the bracket and the fixing piece are buried in the concrete structure to form an integral structure.

2. The large-diameter steel pipe column base connection structure according to claim 1, wherein the bracket includes a plurality of vertical rods for supporting the column base and arranged at intervals around an axis of the cylinder and a plurality of support rods connected between the vertical rods;

the reinforcing cage is arranged in the area enclosed by the vertical rods and is fixedly connected with the corresponding supporting rods.

3. The connecting structure of a column base of a large-diameter steel pipe column according to claim 2, wherein the bracket further comprises a plurality of ring plates which are arranged at intervals along the length direction of the vertical rod and are opposite to the base;

the base is fixedly connected with the annular plate through an anchor rod, so that the support is fixedly connected with the column base.

4. The connecting structure of the column base of the large-diameter steel pipe column according to claim 3, wherein the ring plates are provided with a plurality of connecting holes at intervals, and the base is provided with through holes corresponding to the connecting holes;

the anchor rod correspondingly penetrates through the connecting hole and the through hole and is fixed by a nut, so that the base is fixedly connected with the support.

5. The large-diameter steel-pipe column base joint structure according to claim 4, further comprising a reinforcing-rib net tied along said anchor rod, said reinforcing-rib net surrounding said anchor rod, and said reinforcing-rib net being placed on the surface of said concrete column.

6. The large-diameter steel pipe column base connection structure according to claim 2, wherein the fixing member includes a fixing plate which is annular and matches with the area enclosed by the vertical rods, and a plurality of anchor bars which are fixed at intervals on the bottom surface of the fixing plate, the anchor bars are pre-buried in the concrete column, and the surface of the fixing plate is flush with the top surface of the concrete column.

7. The connection structure of a column shoe of a large-diameter steel pipe column according to claim 6, wherein a positioning mark is engraved on the top surface of the fixing plate corresponding to the vertical rod.

8. The large-diameter steel pipe column base connection structure according to claim 1, wherein a plurality of positioning pits are arranged at intervals on the top of the side wall of the cylinder body.

9. The large-diameter steel pipe column base connection structure according to claim 8, wherein four positioning pits are provided, and the four positioning pits are provided in two directions perpendicular to each other.

10. A construction method of a connection structure of a column base of a large-diameter steel pipe column according to claim 1, characterized by comprising the steps of:

providing the fixing piece, and embedding the fixing piece in the top of the concrete column;

providing the support and the reinforcement cage, fixing the reinforcement cage in the support, and further installing the support at the bottom of the base, so that the protruding part of the reinforcement cage penetrates through the barrel;

and welding the support to the surface of the fixing piece, and pouring concrete on the top surface of the concrete column to form a concrete structure, so that the base, the support and the fixing piece are buried in the concrete structure to form an integrated structure.

Technical Field

The invention relates to the field of building construction, in particular to a connecting structure of a large-diameter steel pipe column base.

Background

In the field of building construction, a large-diameter steel pipe concrete column structure can adapt to different working conditions such as large span, high rise, heavy load and the like due to excellent structural performance, and is widely applied to super high-rise buildings, wherein a steel pipe column base is used as a starting point of steel structure construction and is a foundation of the whole steel structure engineering, so that selection of a column base installation method and control of installation accuracy are key difficulties in the construction process of the steel pipe column, and great influence is generated on the progress and quality control of the whole super high-rise construction.

The method that generally adopts when setting up the column base of steel-pipe column in the top of existing concrete column at present utilizes the crab-bolt directly to anchor the column base in concrete foundation surface and in a plurality of strengthening ribs of junction ligature in order to promote intensity, but because there are construction position height, installation space is narrow and small, the crisscross intensive scheduling problem of junction reinforcing bar during actual construction, the condition such as reinforcing bar ligature inconvenience may appear, the crab-bolt location is difficult, construction process is complicated to lead to the unable assurance of construction quality, the intensity of column base department scheduling problem not up to standard.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a connecting structure of a large-diameter steel pipe column base, solves the problem of difficult installation of the column base in a super high-rise building, avoids long-time high-altitude operation, can be used for binding reinforcing steel bars on the ground in advance, ensures the construction quality and ensures the strength of the column base.

The technical scheme for realizing the purpose is as follows:

the invention provides a connecting structure of a large-diameter steel pipe column base, which is arranged at the top of an existing concrete column, comprises a cylinder body and a base fixed at the bottom of the cylinder body and protruding outwards, and comprises:

the fixing piece is embedded in the top of the concrete column and partially exposed, and the exposed part of the fixing piece is flush with the top surface of the concrete column;

the support is detachably arranged at the bottom of the base, a reinforcement cage with a part protruding outwards from the top of the support is fixedly arranged in the support, the protruding part of the reinforcement cage correspondingly penetrates through the cylinder, and the support and the fixing piece are connected through welding so that the column base is fixed at the top of the concrete column; and

and pouring a concrete structure formed at the top of the concrete column, and burying the base, the bracket and the fixing piece in the concrete structure to form an integral structure.

The invention adopts the connecting structure of the column base of the large-diameter steel pipe column, the support is fixed at the bottom of the base of the column base, and then the support is connected with the fixing piece in a welding way, so that the column base is fixed at the top of the concrete column, concrete is poured to form a concrete structure, the support, the fixing piece and the base of the column base are all embedded in the concrete structure and are in an integral structure, the time of high-altitude operation is reduced by adopting the mode that the support is welded on the fixing piece, namely the connection of the support, a reinforcement cage and the column base can be completed on the ground, in addition, the reinforcement cage is arranged in the support, and the protruding part of the reinforcement cage is penetrated through the cylinder body, so that the bottom of the reinforcement cage can be fixed in the concrete structure, the column base part is more stably connected with the support, the strength of the connecting part of the column base and the concrete column is improved, the steel bars can be bound on the ground in advance, so that the construction quality is ensured, and the strength of the column base is ensured.

The connecting structure of the large-diameter steel pipe column base is further improved in that the support comprises a plurality of vertical rods and a plurality of support rods, wherein the vertical rods are used for supporting the column base and are arranged around the axis of the cylinder at intervals;

the steel reinforcement cage sets up in the region that a plurality of vertical poles enclose, and steel reinforcement cage in the bracing piece fixed connection that corresponds.

The connecting structure of the column foot of the large-diameter steel pipe column is further improved in that the support also comprises a plurality of ring plates which are arranged at intervals along the length direction of the vertical rod and are opposite to the base;

the base is fixedly connected with the annular plate through the anchor rod, so that the support is fixedly connected with the column base.

The connecting structure of the large-diameter steel pipe column base is further improved in that a plurality of connecting holes are formed in the annular plate at intervals, and through holes are formed in the base corresponding to the connecting holes;

the anchor rod correspondingly penetrates through the connecting hole and the through hole and is fixed by the nut, so that the base is fixedly connected with the support.

The invention further improves the connection structure of the column base of the large-diameter steel pipe column, and the connection structure also comprises a reinforcing rib net which is bound along the anchor rod, the reinforcing rib net surrounds the anchor rod, and the reinforcing rib net is arranged on the surface of the concrete column.

The connecting structure of the column base of the large-diameter steel pipe column is further improved in that the fixing piece comprises a fixing plate which is annular and matched with a region surrounded by the vertical rods and a plurality of anchor bars which are fixedly arranged on the bottom surface of the fixing plate at intervals, the anchor bars are embedded in the concrete column, and the surface of the fixing plate is flush with the top surface of the concrete column.

The connecting structure of the large-diameter steel pipe column base is further improved in that the top surface of the fixing plate is marked with a positioning mark corresponding to the vertical rod.

The connecting structure of the large-diameter steel pipe column base is further improved in that a plurality of positioning pits are arranged at intervals on the top of the side wall of the cylinder body.

The connecting structure of the large-diameter steel pipe column base is further improved in that four positioning pit points are arranged and arranged along two directions which are vertical to each other.

The invention provides a construction method of a large-diameter steel pipe column base connection structure, which comprises the following steps:

providing a fixing piece, and embedding the fixing piece in the top of the concrete column;

providing a support and a reinforcement cage, fixing the reinforcement cage in the support, and further installing the support at the bottom of the base so that the protruding part of the reinforcement cage penetrates through the barrel;

the support is welded and connected to the surface of the fixing piece, concrete is poured on the top surface of the concrete column to form a concrete structure, and the base, the support and the fixing piece are all buried in the concrete structure to form an integrated structure.

Drawings

Fig. 1 is a front sectional view of a connection structure of a column shoe of a large-diameter steel pipe column according to the present invention.

Fig. 2 is a front sectional view of the connection structure of the column shoe of the large-diameter steel pipe column of the present invention with the concrete structure removed.

Fig. 3 is a perspective view of a column base, a fixing member and a bracket part in the connection structure of a large-diameter steel pipe column base according to the present invention.

Fig. 4 is an enlarged schematic view of a bracket and a fixing part in the connection structure of a large-diameter steel pipe column base of the invention.

Fig. 5 is an enlarged schematic view of an anchor rod portion in the connection structure of a large-diameter steel pipe column base according to the present invention.

Fig. 6 is a plan view of a fixing part in the connection structure of a column shoe of a large-diameter steel pipe column according to the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, the invention provides a connection structure of a column base of a large-diameter steel pipe column, a bracket is fixed at the bottom of a base of the column base, the bracket is further welded with a fixing piece, the column base is fixed at the top of the concrete column, concrete is poured to form a concrete structure, the bracket, the fixing piece and the base of the column base are all buried in the concrete structure and are in an integrated structure, the time of high-altitude operation is reduced by adopting a mode that the bracket is welded on the fixing piece, namely, the connection of the bracket, a reinforcement cage and the column base can be completed on the ground, in addition, the reinforcement cage is arranged in the bracket, the protruding part of the reinforcement cage penetrates through a cylinder body, the bottom of the reinforcement cage can be fixed in the concrete structure, so that the column base part is more stably connected with the bracket, the strength of the column base and the connection part of the concrete column base is improved, and the, the long-time overhead operation is avoided, the steel bars can be bound on the ground in advance, the construction quality is guaranteed, and the strength of the column base is guaranteed. The connection structure of the large-diameter steel pipe column base according to the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a front cross-sectional view of a connection structure of a column shoe of a large-diameter steel pipe column according to the present invention. The connection structure of the column shoe of a large-diameter steel pipe column according to the present invention will be described with reference to fig. 1.

As shown in fig. 1 and 2, the connection structure of a large-diameter steel pipe column base of the present invention, the column base 22 being installed on the top of an existing concrete column 21, the column base 22 including a cylinder 221 and a base 222 fixed to the bottom of the cylinder 221 and protruding outward, the connection structure including:

the fixing piece 11 is embedded in the top of the concrete column 21 and partially exposed, and the exposed part of the fixing piece 11 is flush with the top surface of the concrete column 21;

the support 12 is detachably mounted at the bottom of the base 222, a reinforcement cage 121 partially protruding outwards from the top of the support 12 is fixedly arranged in the support 12, the protruding part of the reinforcement cage 121 correspondingly penetrates through the cylinder 221, and the support 12 and the fixing piece 11 are connected by welding, so that the column foot 22 is fixed at the top of the concrete column 21; and

and pouring the concrete structure 14 formed on the top of the concrete column 21, wherein the base 222, the bracket 12 and the fixing piece 11 are buried in the concrete structure 14 to form an integral structure.

Preferably, the concrete column 21 may be embedded with a connection rib, the connection rib is partially exposed out of the top of the concrete column 21 and located outside the bracket 12, and the exposed part of the connection rib is embedded in the concrete structure 14, so as to further enhance the strength of the connection between the bracket 12 and the concrete column 21.

As a preferred embodiment of the present invention, referring to fig. 3 and 4, the bracket 12 includes a plurality of vertical rods 122 for supporting the column bases 22 and spaced around the axis of the barrel 221, and a plurality of support rods 123 connected between the vertical rods 122;

the reinforcement cage 121 is arranged in the area surrounded by the vertical rods 122, the reinforcement cage 121 is fixedly connected with the corresponding support rods 123, the reinforcement cage 121 is partially fixedly arranged in the support 12, the effect of improving the strength of the portion can be achieved, and the reinforcement cage 121 can serve as the reinforcement cage of the steel pipe column, so that the steel pipe column to be formed is more stably connected with the support 12.

Further, the bracket 12 further includes a plurality of ring plates 124 disposed at intervals along the length direction of the vertical rod 122 and opposite to the base 222;

the base is fixedly connected to the ring plate 124 by the anchor rods 13, so that the bracket 12 is fixedly connected to the column base 22.

Specifically, the ring plate 124 is provided with a plurality of connecting holes at intervals, and the base 222 is provided with through holes corresponding to the connecting holes;

the anchor rods 13 are correspondingly inserted through the coupling holes and the through holes and fixed by the nuts 131, so that the base 222 is fixedly coupled with the bracket 12.

Preferably, as shown in fig. 5, a plurality of nuts 131 are screwed on the anchor rod 13, and after the anchor rod 13 passes through the connecting hole and the through hole, the nuts 131 are respectively abutted against the top surface and the bottom surface of the base 222, and further the nuts 131 are abutted against the bottom surface of the ring plate 124, so as to fixedly connect the base 222 and the bracket 12.

Specifically, a reinforcing rib net 125 is also included, which is tied along the anchor rods 13, the reinforcing rib net 125 surrounds the anchor rods 13, and the reinforcing rib net 125 is placed on the surface of the concrete column 21 to further increase the strength.

Further, the fixing member 11 includes a fixing plate 111 which is annular and is matched with the area surrounded by the vertical rod 122, and a plurality of anchor bars 112 which are fixedly arranged on the bottom surface of the fixing plate 111 at intervals, the anchor bars 112 are pre-embedded in the concrete column 21, and the surface of the fixing plate 111 is flush with the top surface of the concrete column 21.

Specifically, the top surface of the fixing plate 111 is marked with a positioning mark 1112 corresponding to the vertical rod 122.

Preferably, as shown in fig. 6, the top surface of the fixing plate 111 is provided with a positioning rib 1111, the positioning rib 1111 is connected to the positioning mark 1112 to form a # -shape to surround the positioning mark 1112, and the vertical rod 122 is fixed in the # -shape surrounded by the positioning rib 1111 to be overlapped with the positioning mark 1112 to perform a further positioning function.

Furthermore, a plurality of positioning pits 2211 are arranged at intervals on the top of the side wall of the cylinder 221, and a total station can be used for measuring the positioning pits 2211 so as to accurately adjust the position of the bracket 12 and ensure the installation accuracy of the column base 22.

Preferably, the positioning pits 2211 are provided in four, and the four positioning pits 2211 are provided in two directions perpendicular to each other.

The concrete implementation mode of the connecting structure of the large-diameter steel pipe column base is as follows:

utilizing BIM technology to perform simulation positioning and prefabricating the bracket 12, the fixing piece 11 and the reinforcement cage 121;

before concrete is poured, the anchor bars 112 of the fixing pieces 11 are fixedly connected with the steel bars in the concrete column 21, after the concrete column 21 is poured, the surface of the fixing plate 111 is flush with the top surface of the concrete column 21, and the top of the fixing plate 111 is provided with positioning bars 1111 and marked with positioning marks 1112;

constructing the column foot 22 and the bracket 12 part on the ground in advance, fixing the reinforcement cage 121 in the area enclosed by the vertical rod 122 of the bracket 12, further placing the column foot 22 on the top of the bracket 12, enabling the protruding part of the reinforcement cage 121 to penetrate through the cylinder 221, correspondingly penetrating the anchor rod 13 through the through hole of the base 222 and the connecting hole on the annular plate 124, and fixing by using the nut 131, so that the column foot 22 is fixed on the top of the bracket 12;

a reinforcing rib net 125 is bound along the anchor rod 13 and fixed, and the bottom of the reinforcing rib net 125 is flush with the bottom of the vertical rod 122;

hoisting the bracket 12 to the top surface of the concrete column 21 by using a hoisting mechanism, placing the vertical rod 122 in the positioning rib 1111 and coinciding with the positioning mark 1112, measuring a positioning pit 2211 at the top of the cylinder 221 by using a total station instrument to further finely adjust the position of the bracket 12, and welding and connecting the bracket 12 and the fixing piece 11, thereby fixing the column foot 22 to the top of the concrete column 21;

if a floor slab is to be formed at the position where the base of the column base 22 is arranged, the floor slab steel bars are welded with the base 222, after the floor slab steel bars are bound, a template is correspondingly erected above the concrete column 21, the concrete structure 14 is formed by pouring in the template, at the moment, the base 222, the fixing piece 11 and the support 12 are all embedded in the concrete structure 14 to form an integral structure, and therefore the column base 22 of the steel pipe column is fixed at the top of the concrete column 21.

The invention also provides a construction method of the connection structure of the large-diameter steel pipe column base, which comprises the following steps:

providing a fixing piece 11, and embedding the fixing piece 11 in the top of the concrete column 21;

providing a support 12 and a reinforcement cage 121, fixing the reinforcement cage 121 in the support 12, and further installing the support 12 at the bottom of the base 222, so that the protruding part of the reinforcement cage 121 penetrates through the barrel 221;

welding the support 12 to the surface of the fixing member 11, pouring concrete on the top surface of the concrete column 21 to form a concrete structure 14, so that the base 222, the support 12 and the fixing member 11 are all buried in the concrete structure 14 and form an integrated structure;

in actual construction, only the support 12 which is constructed on the ground needs to be welded to the fixing part 11, so that the construction process is simplified, the construction speed is increased, the concrete structure 14 is formed by one-step pouring, the integrity is good, meanwhile, the positioning pit 2211 is positioned and measured by using a total station, the installation precision of the column foot 22 can be ensured, in addition, only the erection of an operation platform and a protection frame is needed when the support 12 is hoisted, and the occupied time of construction materials is reduced.

The specific operation mode of the practical implementation of the using method provided by the invention is as follows:

utilizing BIM technology to perform simulation positioning and prefabricating the bracket 12, the fixing piece 11 and the reinforcement cage 121;

before concrete is poured, the anchor bars 112 of the fixing pieces 11 are fixedly connected with the steel bars in the concrete column 21, after the concrete column 21 is poured, the surface of the fixing plate 111 is flush with the top surface of the concrete column 21, and the top of the fixing plate 111 is provided with positioning bars 1111 and marked with positioning marks 1112;

constructing the column foot 22 and the bracket 12 part on the ground in advance, fixing the reinforcement cage 121 in the area enclosed by the vertical rod 122 of the bracket 12, further placing the column foot 22 on the top of the bracket 12, enabling the protruding part of the reinforcement cage 121 to penetrate through the cylinder 221, correspondingly penetrating the anchor rod 13 through the through hole of the base 222 and the connecting hole on the annular plate 124, and fixing by using the nut 131, so that the column foot 22 is fixed on the top of the bracket 12;

a reinforcing rib net 125 is bound along the anchor rod 13 and fixed, and the bottom of the reinforcing rib net 125 is flush with the bottom of the vertical rod 122;

hoisting the bracket 12 to the top surface of the concrete column 21 by using a hoisting mechanism, placing the vertical rod 122 in the positioning rib 1111 and coinciding with the positioning mark 1112, measuring a positioning pit 2211 at the top of the cylinder 221 by using a total station instrument to further finely adjust the position of the bracket 12, and welding and connecting the bracket 12 and the fixing piece 11, thereby fixing the column foot 22 to the top of the concrete column 21;

if a floor slab is to be formed at the position where the base of the column base 22 is arranged, the floor slab steel bars are welded with the base 222, after the floor slab steel bars are bound, a template is correspondingly erected above the concrete column 21, the concrete structure 14 is formed by pouring in the template, at the moment, the base 222, the fixing piece 11 and the support 12 are all embedded in the concrete structure 14 to form an integral structure, and therefore the column base 22 of the steel pipe column is fixed at the top of the concrete column 21.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.