CN219011700U

CN219011700U - Concrete beam longitudinal bar construction node at foundation bolt of base

Info

Publication number: CN219011700U
Application number: CN202223361589.7U
Authority: CN
Inventors: 严威; 陈佑斌; 程云; 赵巍
Original assignee: Zhejiang Xizi United Engineering Co ltd
Current assignee: Zhejiang Xizi United Engineering Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-12
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to a concrete beam longitudinal bar construction node at a foundation bolt of a base, which comprises an anchor bolt steel pipe, wherein the anchor bolt steel pipe is fixed in a fixing sleeve, the fixing sleeve is formed by oppositely welding two first steel plates and two second steel plates, and a connecting plate for connecting the beam longitudinal bar is welded on the first steel plates or the second steel plates. The structure is characterized in that the connecting plate is welded outside the fixing sleeve, the fixing sleeve is wrapped outside the anchor bolt steel pipe to break the concrete beam longitudinal ribs during construction, the interference problem of the anchor bolt steel pipe and the beam longitudinal ribs is solved through welding of the connecting plate and the concrete beam longitudinal ribs, and meanwhile the strength of the concrete beam is guaranteed.

Description

Concrete beam longitudinal bar construction node at foundation bolt of base

Technical Field

The utility model relates to the technical field of building construction of buildings or large-scale equipment, in particular to a concrete beam longitudinal bar construction node at a foundation bolt of a base.

Background

As a precise power device, large-scale equipment such as a steam turbine generator has high precision requirement in installation and strict control of amplitude in the running process. For the above reasons, some large-scale equipment has high requirements on civil engineering design.

Specifically, a large block foundation, a wall foundation and a frame foundation can be generally adopted as a civil foundation under the base of the steam turbine generator. In waste heat power plants of small units, the frame type foundation is widely applied, and the main structure is a concrete upright post supporting top girder and a thick plate. The turbo generator generates larger vibration and higher temperature during operation. Therefore, the following points need to be paid special attention when designing the civil foundation under the turbine generator base: firstly, the vibration amplitude of equipment needs to be controlled, so the cross section of a beam member for supporting the steam turbine generator is generally larger; secondly, the higher temperature generated during operation cannot be ignored for the temperature load of the large-section component, so that the reinforcement ratio of the beam section cannot be too small; thirdly, the fatigue damage problem of the power load to the concrete beam also needs to be emphasized, and the lap joint anchoring requirement of the steel bars is higher. Based on the three reasons, the section of the civil foundation member of the steam turbine generator is often larger, more reinforcing bars are distributed, the reinforcing bars are required to be anchored highly, the anchoring length is long, and certain difficulty is caused to the construction itself.

The connection of the turbine generator base and the concrete beam of the civil foundation generally adopts a fastening connection mode of foundation bolts, so that a large-diameter through-length steel pipe is generally pre-embedded in the beam in advance. The concrete beam inner steel bar is very dense, the large-diameter steel tube is pre-buried again and the positioning is required to be accurate, the problem that the beam longitudinal bar is interfered with the steel tube is often generated, namely the beam longitudinal bar cannot be penetrated through in a full length. Because the concrete beam is under the action of dynamic load, the beam longitudinal ribs can not adopt a lap joint anchoring mode generally. Therefore, how to arrange the concrete beam steel bars becomes a difficult problem frequently encountered in the civil construction process and needs to be solved.

The utility model discloses a turbine generator base, which comprises a plurality of concrete upright posts erected on a datum plane and a plurality of concrete cross beams respectively erected on the plurality of concrete upright posts, wherein the Chinese patent publication number is CN 202644568U; each concrete upright post comprises an upright post framework, and each concrete cross beam comprises a cross beam framework; the upright post framework comprises a steel post framework, the steel post framework comprises a plurality of steel posts which are arranged in parallel at intervals, and the lower ends of the steel posts are fixed on the datum plane.

The prior art solutions described above have the following drawbacks: the crossbeam adopts full steel construction, and during the on-the-spot equipment, crossbeam and crossbeam, crossbeam and stand all need welding treatment, therefore the solder joint is more, and the welding degree of difficulty is high, and on-the-spot welding complex operation, and full steel construction crossbeam cost is higher.

Disclosure of Invention

In order to solve the problems, the utility model provides the concrete beam longitudinal bar construction node at the foundation bolt of the base, which has stable structure, simple field operation and small influence on the strength of the longitudinal bar.

In order to achieve the above purpose, the concrete beam longitudinal bar construction node at the foundation bolt of the base comprises an anchor bolt steel pipe, wherein the anchor bolt steel pipe is fixed in a fixing sleeve, the fixing sleeve is formed by welding two first steel plates and two second steel plates relatively to form a quadrangle, and a connecting plate for connecting the beam longitudinal bars is welded on the first steel plates or the second steel plates. The structure is characterized in that the connecting plate is welded outside the fixing sleeve, the fixing sleeve is wrapped outside the anchor bolt steel pipe to break the concrete beam longitudinal ribs during construction, the interference problem of the anchor bolt steel pipe and the beam longitudinal ribs is solved through welding of the connecting plate and the concrete beam longitudinal ribs, and meanwhile the strength of the concrete beam is guaranteed.

In order to ensure that the connecting plate and the fixing sleeve are welded more firmly, the connecting plate is a steel plate with a certain height, is arranged on the side edge of the fixing sleeve along the height direction and is welded and fixed with the fixing sleeve. The connecting plate with a certain height can have a larger welding area when being welded with the fixing sleeve, so that the connecting strength of the connecting plate and the fixing sleeve can be ensured.

In order to strengthen the fixing sleeve, fixing reinforcing steel bars for limiting the foundation bolt steel tubes are arranged in the fixing sleeve. The fixed reinforcing steel bar can play a role of an inner framework in the fixed sleeve, and deformation of the fixed sleeve when the connecting plates at the two ends are connected with the longitudinal beam ribs under uneven stress is avoided.

In order to further strengthen the fixing sleeve, the fixing steel bars form a certain included angle with the first steel plate and the second steel plate. The fixed reinforcing steel bars and the fixed sleeve members form a triangular structure, so that the integral strength of the fixed sleeve members can be increased, and deformation of the fixed sleeve members due to extrusion of concrete at two sides during concrete pouring is avoided.

Still further scheme is in order to stabilize rag bolt steel pipe better, fixed steel bar and rag bolt steel pipe welded fastening. The fixed reinforcing bar not only can stabilize the rag bolt steel pipe, but also can transmit the stress from the fixed external member to the rag bolt steel pipe, further strengthening the stability of the whole structure.

In order to increase the welding area, the connecting plate is in double-sided lap welding connection with the external beam longitudinal ribs. The beam longitudinal ribs welded by double-sided lap joint can ensure the connection strength of the connecting plate and the beam longitudinal ribs, so that the stress of the beam can be better transferred to the anchor bolt steel pipe, and the beam longitudinal ribs can be ensured to be broken and the integral strength of the beam after being welded again.

The concrete beam longitudinal rib construction node at the foundation bolt position of the base can ensure the accurate positioning arrangement of the foundation bolt steel pipes, and solves the interference problem between the foundation bolt steel pipes and the beam longitudinal ribs. Meanwhile, the strength of the concrete beam still meets the strength requirement after the concrete beam longitudinal ribs are broken and welded through the design of the connecting plate structure and the welding form, and the complex abdication arrangement of the beam longitudinal ribs is not required to be considered on the premise of ensuring the strength of the concrete beam. In conclusion, the structure of the utility model has the characteristics of reasonable design, high strength, low cost and convenient construction.

Drawings

FIG. 1 is a top view of embodiment 1 of the present utility model

FIG. 2 is a front view of embodiment 1 of the present utility model;

wherein: the anchor bolt steel pipe 1, a fixing sleeve 2, a first steel plate 3, a connecting plate 4, fixing steel bars 5, beam longitudinal bars 6 and a second steel plate 7.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Example 1

As shown in fig. 1 and 2, the concrete beam longitudinal bar construction node at the foundation bolt of the base described in this embodiment comprises an anchor bolt steel pipe 1, the anchor bolt steel pipe 1 is fixed in a fixing sleeve 2, the fixing sleeve 2 is formed into a cuboid or square by welding two first steel plates 3 and two second steel plates 7 relatively, a connecting plate 4 for connecting the beam longitudinal bar 6 is welded on the first steel plates 3 or the second steel plates 7, the connecting plate 4 is a steel plate with a certain width, is vertically arranged on the side edge of the fixing sleeve 2 and is welded and fixed with the fixing sleeve 2, a fixing reinforcing steel bar 5 for limiting the anchor bolt steel pipe 1 is arranged in the fixing sleeve 2, a certain included angle is formed between the fixing reinforcing steel bar 5 and the first steel plates 3 and the second steel plates 7, and is generally 45 degrees, and meanwhile, the fixing reinforcing steel bar 5 is welded and fixed with the anchor bolt steel pipe 1.

Further, the connecting plate 4 is in double-sided lap welding connection with the external beam longitudinal ribs 6.

The utility model also provides a construction method of the concrete beam longitudinal bar construction node at the foundation bolt of the base, which comprises the following steps:

(1) Two first steel plates 3 and two second steel plates 7 are welded into a steel frame, and the connecting plate 4 and the steel frame are welded into the fixing sleeve 2.

(2) The fixing sleeve member 2 is sleeved outside the foundation bolt steel pipe 1, and the position of the fixing sleeve member 2 is adjusted according to the position of the concrete beam longitudinal rib 6.

(3) After the position of the fixing sleeve member 2 is adjusted, the fixing steel bars 5 and the anchor bolt steel pipes 1 are welded and fixed.

(4) And cutting off the concrete beam longitudinal ribs at the interference position of the anchor bolt steel pipe 1.

(5) The concrete beam longitudinal ribs 6 and the connecting plates 4 at two sides of the fixing sleeve member 2 form joints through double-sided lap welding.

(6) And pouring concrete into the positioned nodes.

In the above construction method, step (1) may be started when the foundation is excavated, the construction site is not limited to the factory construction site, and the first steel plate 3 and the second steel plate 7 are selected according to the diameters of the anchor bolt steel pipes, and the construction site may be manufactured by a prefabrication factory and transported to the site.

In the above construction method, step (2) includes bolting the anchor bolt steel pipe 1 to an anchor bolt on the foundation of the foundation.

In the above construction method, the step (3) includes welding and fixing the reinforcing steel bars 5 on the upper and lower parts of the fixing sleeve 2 to limit and fix the anchor bolt steel pipe 1.

In the above construction method, step (4) includes hoisting the beam reinforcement cage (not shown) above the fixing sleeve 2 by a hoisting device (not shown), removing the stirrup (not shown) interfering with the fixing sleeve 2 by the beam reinforcement cage, and then cutting off a part of the beam longitudinal bars 6.

In the construction method, the step (5) comprises the steps of lowering the beam reinforcement cage to the fixing sleeve 2 by using lifting equipment, and welding the connecting plate 4 and the beam longitudinal ribs 6.

In the construction method, the step (6) comprises the step of pouring concrete at the joint and the beam reinforcement cage after installing the templates on the beam reinforcement cage and the nodes.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a concrete beam longitudinal bar construction node in base rag bolt department, includes rag bolt steel pipe (1), its characterized in that, rag bolt steel pipe (1) are fixed in fixed external member (2), fixed external member (2) are by two first steel sheet (3) and two second steel sheet (7) relative welding constitution quadrangles, the welding has connecting plate (4) that are used for connecting beam longitudinal bar (6) on first steel sheet (3) or second steel sheet (7).

2. The concrete beam longitudinal bar construction node at the foundation bolt of the base according to claim 1, wherein the connecting plate (4) is a steel plate with a certain height, which is arranged at the side of the fixing sleeve (2) along the height direction and welded and fixed with the fixing sleeve (2).

3. The concrete beam longitudinal bar construction node at the foundation bolt position of the base according to claim 2, wherein a fixing reinforcing bar (5) for limiting the foundation bolt steel tube (1) is arranged in the fixing sleeve (2).

4. A concrete beam longitudinal bar construction node at a foundation bolt of a base according to claim 3, wherein the fixed steel bars (5) are arranged at an included angle with the first steel plate (3) and the second steel plate (7).

5. The concrete beam longitudinal bar construction node at the foundation bolt of the base according to claim 4, wherein the fixed steel bars (5) are welded and fixed with the foundation bolt steel pipes (1).

6. The concrete beam longitudinal bar construction node at the foundation bolt of the base according to claim 1, wherein the connecting plate (4) is in double-sided lap welding connection with the external beam longitudinal bar (6).