A test base for steel bar parts and test method thereof

Abstract

The present invention discloses a test base for steel bar components and a test method thereof, comprising a base outer ring frame corresponding to the outer ring shape of the steel bar component segment, a base inner ring frame corresponding to the inner ring shape of the steel bar component segment, and an angle steel frame located between the base outer ring frame and the base inner ring frame and used for welding with the angle steel of the steel bar component segment; the base outer ring frame is fixedly connected with a first connecting steel bar that can be butt-jointed and fixed with the outer ring steel bar of the steel bar component segment above the test base, the base inner ring frame is fixedly connected with a second connecting steel bar that can be butt-jointed and fixed with the inner ring steel bar of the steel bar component segment above the test base, and the angle steel frame is fixedly connected with a base angle steel that can be welded and fixed with the angle steel of the steel bar component segment above the test base of the steel bar component. The test base designed by the present invention can be tested on the ground under the tower, simulating the hoisting process of the large segment of the steel bar component on the tower, and verifying the safety of the hoisting of the large segment on the tower and the accuracy of the linear adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of test devices for steel bar components of bridge reinforced concrete tower columns, and specifically refers to a test base for steel bar components and a test method therefor. Background Technique

[0002] With the development of society, more and more concrete cable-stayed tower steel bars tend to adopt the production process of steel bar componentization, that is, steel bar mesh sheets and stiffening skeletons are made into steel bar component blocks in the factory, transported to the site and hoisted integrally. Generally, large-section integral hoisting is adopted for steel bar components, with high risks in high-altitude operations and great difficulties in linear control. In order to verify the installation safety of steel bar components on the tower and the accuracy of linear adjustment, tests need to be carried out on the ground to simulate the hoisting of steel bar components, the connection conditions of steel bar components on the tower, and the linear adjustment conditions. To simulate the cast tower column segments, cast-in-place concrete is generally used as the test base for steel bar components, but the later removal of concrete is difficult, costly and not conducive to environmental protection. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies of the above background technique, and provide a test base for steel bar components and a test method therefor that are easy to disassemble, meet construction requirements and are convenient for construction.

[0004] To achieve this purpose, the test base for steel bar components designed by the present invention includes a base outer ring skeleton corresponding to the outer shape of the steel bar component segment, a base inner ring skeleton corresponding to the inner shape of the steel bar component segment, and an angle steel skeleton located between the base outer ring skeleton and the base inner ring skeleton for fixedly connecting with the angle steel of the steel bar component segment; a first connecting steel bar fixedly connected to the base outer ring skeleton and capable of being butt-jointed and fixed with the outer ring steel bars of the steel bar component segment is provided, a second connecting steel bar fixedly connected to the base inner ring skeleton and capable of being butt-jointed and fixed with the inner ring steel bars of the steel bar component segment is provided, and a base angle steel fixedly connected to the angle steel skeleton and capable of being welded and fixed with the angle steel of the steel bar component segment above the test base of the steel bar component is provided. Note: The base angle steel here and the angle steel of the steel bar component segment above the base are the same components. In the present invention, the base angle steel is designed and arranged for the angle steel of the steel bar component segment above it.

[0005] Further, the base outer ring skeleton includes a plurality of first components fixedly connected end to end, and each first component includes a first component horizontal plane arranged along its length direction, and the first connecting steel bar is fixedly connected to the first component horizontal plane.

[0006] Furthermore, a plurality of groups of the first connecting steel bars are fixedly connected at intervals on the horizontal plane of the first component along the length direction of the first component, and each group of the first connecting steel bars includes two first connecting steel bars arranged in parallel and at intervals along the width direction of the first component, one end of the first connecting steel bar is fixedly connected to the horizontal plane of the first component, and the other end is arranged toward the bottom outer ring steel bar of the steel bar component segment above the test base of the steel bar component.

[0007] Furthermore, the inner ring skeleton of the base includes a plurality of inner ring skeleton beams fixedly connected end to end, and both ends of each inner ring skeleton beam are respectively located on the outside of two inner ring skeleton beams fixedly connected to the inner ring skeleton beam.

[0008] Furthermore, the inner ring skeleton beam includes an inner ring skeleton beam horizontal plane arranged along its length direction, and the second connecting steel bar is fixedly connected to the inner ring skeleton beam horizontal plane.

[0009] Furthermore, a plurality of second connecting steel bars are fixedly connected at intervals on the horizontal plane of the inner ring skeleton beam along the length direction of the inner ring skeleton beam, one end of the second connecting steel bar is fixedly connected to the horizontal plane of the inner ring skeleton beam, and the other end is arranged toward the bottom inner ring steel bar of the steel bar component segment above the test base of the steel bar component.

[0010] Furthermore, a plurality of the angle steel frames are arranged between the base outer ring frame and the base inner ring frame, and the angle steel frames include horizontal planes of the angle steel frames arranged along the length direction thereof, and the base angle steel is fixedly connected to the horizontal planes of the angle steel frames.

[0011] Furthermore, a plurality of base angle steels are fixed at intervals on the horizontal plane of the angle steel skeleton along the length direction of the angle steel skeleton, one end of the base angle steel is fixed on the horizontal plane of the angle steel skeleton, and the other end is arranged toward the bottom angle steel of the steel bar component segment above the test base of the steel bar component.

[0012] Furthermore, a horizontally arranged connecting steel plate is fixed to the top surface of the base angle steel and is used for welding and fixing to the bottom angle steel of the steel bar component segment above the test base of the steel bar component.

[0013] Furthermore, the test method based on the test base of the steel bar component described above is: based on the first connecting steel bar or the second connecting steel bar of the test base of the steel bar component, a loading test is carried out to verify the effectiveness of the steel bar connector; after the steel bar connector passes the loading test, the steel bar component segment above the test base of the steel bar component is hoisted, the first connecting steel bar is butt-jointed and fixed to the outer ring steel bar at the bottom of the steel bar component segment above the test base of the steel bar component, the second connecting steel bar is butt-jointed and fixed to the inner ring steel bar at the bottom of the steel bar component segment above the test base of the steel bar component, and the angle steel at the bottom of the steel bar component segment above the test base of the steel bar component is welded and fixed to the base angle steel.

[0014] The beneficial effects of the present invention are as follows: a steel structure base is formed by an inner ring frame, an outer ring frame and an angle steel frame of the base to replace cast-in-place concrete. Steel bars and angle steels are welded on the frame to simulate the top steel bars and angle steels of the cast segments when the steel bar components on the tower are hoisted and connected. Before high-altitude operations on the tower, tests can be conducted on the ground under the tower to simulate the hoisting process of large segments of steel bar components on the tower. The safety of hoisting large segments on the tower and the accuracy of linear adjustment are verified through tests, thereby reducing the risk of high-altitude operations and improving linear accuracy. The test base of the steel bar components can be made of prefabricated steel sections in the factory, and a steel structure base is formed by on-site welding, which improves the efficiency of the early layout of the on-site test, avoids environmental damage, and ensures the convenience of installation and later dismantling. The test base of the steel bar components designed by the present invention can be used repeatedly, effectively reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of a test base of a steel bar component in the present invention;

[0016] Figure 2 A top view of the first component in the present invention;

[0017] Figure 3 A top view of the second component in the present invention;

[0018] Figure 4 It is a top view of the third component in the present invention;

[0019] Figure 5 It is a top view of the fourth component in the present invention;

[0020] Figure 6 It is a top view of the angle steel skeleton in the present invention;

[0021] Figure 7 It is a side view of the first component in the present invention;

[0022] Figure 8 It is a side view of the second component in the present invention;

[0023] Fig. 9 It is a side view of the angle steel skeleton in the present invention;

[0024] Fig.10 A side view of the first connecting steel bar and the test butt-jointed steel bar in the present invention;

[0025] Fig.11 is a top view of the steel bar connector of the present invention;

[0026] Fig.12 is a vertical axial cross-sectional view of the steel bar connector of the present invention;

[0027] Among them, 1 is the outer ring frame of the base (1.1 is the first component), 2 is the inner ring frame of the base (2.1 is the second component, 2.2 is the third component, 2.3 is the fourth component), 3 is the angle steel frame, 4 is the first connecting steel bar, 5 is the base angle steel, 6 is the connecting steel plate, 7 is the butt steel bar for testing, 8 is the steel sheet, 9 is the high-strength rubber gasket, 10 is the steel bar connector, 11 is the partition, 12 is the bolt, 13 is the bolt hole, and 14 is the second connecting steel bar. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 The test base of the steel bar component shown includes a base outer ring frame 1, a base inner ring frame 2 and an angle steel frame 3.

[0030] like Figure 1 , Figure 2 and Figure 7 As shown, the base outer ring skeleton 1 includes a plurality of first components 1.1 fixedly connected end to end, and the inner surfaces of the plurality of first components 1.1 form a first regular octagonal area. Specifically, the first component 1.1 is an I-beam, and the end surfaces of the plurality of first components 1.1 are fixedly connected end to end to form the base outer ring skeleton 1; a plurality of groups of first connecting steel bars 4 are fixedly fixed at intervals along the length direction of the top surface of the middle web of the first component 1.1, and each group of first connecting steel bars 4 includes two first connecting steel bars 4 arranged in parallel and at intervals along the width direction of the first component 1.1, one end of the first connecting steel bar 4 is fixedly connected to the top surface of the middle web of the I-beam, and the other end is arranged toward the bottom outer ring of the steel bar segment above the test base of the steel bar component (such as Figure 7 As shown, the first connecting steel bar 4 is arranged vertically).

[0031] like Figure 1 , Figure 3 — Figure 5 and Figure 8As shown, the base inner ring frame 2 is located in the first regular octagonal area, the base outer ring frame 1 is coaxially arranged with the base inner ring frame 2, and the inner surface of the base inner ring frame 2 encloses a second regular octagonal area corresponding to the first regular octagonal area. Specifically, the base inner ring frame 2 includes a plurality of second components 2.1 and third components 2.2 that are alternately connected end to end, and the inner surfaces of the plurality of second components 2.1 and third components 2.2 that are alternately connected end to end enclose a second regular octagonal area, and two adjacent second components 2.1 and third components 2.2 that are fixed end to end are arranged in parallel with two adjacent first components 1.1 that are fixed end to end. A third component 2.2 is fixedly connected to the inner surfaces of both ends of each second component 2.1, and the end faces of the third component 2.2 are inclined surfaces fixed at obtuse angles on the inner surfaces of the ends of the second components 2.1. A fourth member 2.3 is fixed to the outer surface of both ends of each second member 2.1. The fourth member 2.3 is coaxially arranged with the third member 2.2. The inner end face of the fourth member 2.3 is an inclined surface fixed at an acute angle to the outer surface of the end of the second member 2.1. The second member 2.1, the third member 2.2 and the fourth member 2.3 are all I-beams. A plurality of second connecting steel bars 14 are fixed to the top surface of the middle web of each second member 2.1 and the top surface of the middle web of each third member 2.2 at intervals along their respective length directions. A second connecting steel bar 14 is fixed to the top surface of the middle web of the fourth member 2.3. One end of the second connecting steel bar 14 is fixedly connected to the top surface of the middle web of the I-beam, and the other end faces the bottom inner circle steel bar arrangement of the steel bar component segment above the test base of the steel bar component (such as Figure 8 As shown, the second connecting steel bar 14 is arranged vertically). An inner ring skeleton beam is composed of a third member 2.2 and two fourth members 2.3 located outside the two ends thereof, or is composed of a second member 2.1, and the two ends of each inner ring skeleton beam are respectively located outside the two inner ring skeleton beams fixedly connected to the inner ring skeleton beam, that is, the end of each inner ring skeleton beam is located outside the second regular octagonal area surrounded by the inner ring skeleton beams.

[0032] like Figure 1 , Figure 6 and Fig. 9As shown, two angle steel frames 3 are arranged between each outer ring skeleton beam and an inner ring skeleton beam parallel thereto. The angle steel frames 3 are arranged perpendicular to the second component 2.1 or the third component 2.2. The angle steel frames 3 are I-beams, and two base angle steels 5 are fixed at intervals on the top surface of the middle web of the angle steel frames 3 along its length direction. One end of the base angle steel 5 is fixed on the top surface of the middle web of the I-beam, and the other end is arranged toward the angle steel at the bottom of the steel bar component segment above the test base of the steel bar component. The angle steel at the bottom of the steel bar component segment above the test base of the steel bar component here is the same component as the base angle steel 5 of the test base designed by the present invention, and the base angle steel 5 in the present invention is arranged correspondingly to the top angle steel of the steel bar component segment simulated by the base.

[0033] After the test base is prefabricated and assembled on site, a simulated lifting test can be carried out based on the test base. The method of butt jointing the steel bars and angle steels is as follows:

[0034] Step 1: Based on the first connecting steel bar 4 or the second connecting steel bar 14 of the test base of the steel bar component, connect it with the test butt steel bar 7 through the steel bar connector 10 to carry out a loading test (when carrying out the loading test, the test butt steel bar 7 is a steel bar of the same model as the first connecting steel bar 4 or the second connecting steel bar 14. First, the test butt steel bar 7 is used to simulate the connecting steel bars of the upper and lower segments, and then the loading test is completed through the steel bar connector 10, and then the steel bar component segment above the test base is hoisted. During actual hoisting, the first connecting steel bar 4 and the second connecting steel bar 14 of the test base are directly connected to the steel bars at the bottom of the steel bar component segment above the test base through the steel bar connector 10 respectively), and the connecting steel plate 6 is welded and fixed to the top surface of the base angle steel 5 of the test base of the steel bar component (increasing the welding area of ​​the angle steel to ensure the strength of the welding structure);

[0035] Step 2: After the steel bar connector 10 passes the loading test, hoist the steel bar component segment above the test base of the steel bar component;

[0036] Step three: butt-jointly fix the first connecting steel bar 4 of the test base of the steel bar component with the outer ring steel bar at the bottom of the steel bar component segment, butt-jointly fix the second connecting steel bar 14 of the test base of the steel bar component with the inner ring steel bar at the bottom of the steel bar component segment, and weld and fix the angle steel at the bottom of the steel bar component segment to the connecting steel plate 6.

[0037] The method of the above loading test is: Fig.10As shown in FIG. 12 , the test butt-jointed steel bars 7 and the first connecting steel bars 4 are butt-jointed and positioned. If there is a gap, a steel sheet 8 is inserted between the test butt-jointed steel bars 7 and the first connecting steel bars 4, and a high-strength rubber gasket 9 is sleeved at the connection between the test butt-jointed steel bars 7 and the first connecting steel bars 4. The test butt-jointed steel bars 7 and the first connecting steel bars 4 are connected by a steel bar connector 10, and a tensile force is applied to the end of the test butt-jointed steel bars 7 to determine whether the relative slip between the test butt-jointed steel bars 7 and the first connecting steel bars 4 meets the loading test requirements.

[0038] In addition to the above-mentioned loading test method, two test butt-jointed steel bars 7 can also be butt-jointed through a steel bar connector 10, the position of one of the test butt-jointed steel bars 7 can be maintained, and a tensile force can be applied to the end of the other test butt-jointed steel bar 7 to determine whether the relative slip between the two test butt-jointed steel bars 7 meets the loading test requirements.

[0039] The present invention forms a steel structure base through the base inner ring frame 2, the base outer ring frame 1 and the angle steel frame 3 to replace the cast-in-place concrete. Steel bars and angle steels are welded on the frame to simulate the top steel bars and angle steels on the cast segments when the steel bar parts on the tower are hoisted and connected. Before high-altitude operations on the tower, tests can be carried out on the ground under the tower to simulate the hoisting process of large segments of steel bar parts on the tower. The safety of hoisting large segments on the tower and the accuracy of linear adjustment are verified through experiments, which reduces the risk of high-altitude operations and improves the linear accuracy. The test base of the steel bar parts can be made of prefabricated steel sections in the factory, and the steel structure base is formed by on-site welding, which improves the efficiency of the early layout of the on-site test, avoids damage to the environment, and ensures the convenience of installation and later dismantling. The test base of the steel bar parts designed by the present invention can be used repeatedly, which effectively reduces the cost.

[0040] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A test base for steel bar parts, Features: The invention comprises a base outer ring frame (1) corresponding to the outer ring shape of the steel bar component segment, a base inner ring frame (2) corresponding to the inner ring shape of the steel bar component segment, and an angle steel frame (3) located between the base outer ring frame (1) and the base inner ring frame (2) and used for fixedly connecting with the angle steel of the steel bar component segment; the base outer ring frame (1) is fixedly connected with a first connecting steel bar (4) that can be butt-jointed and fixed with the outer ring steel bar of the steel bar component segment, the base inner ring frame (2) is fixedly connected with a second connecting steel bar (14) that can be butt-jointed and fixed with the inner ring steel bar of the steel bar component segment, and the angle steel frame ( 3) is fixedly connected to a base angle steel (5) which can be welded and fixed to the angle steel of the steel bar component segment above the test base of the steel bar component; the base outer ring frame (1) includes a plurality of first components (1.1) fixedly connected end to end, the first component (1.1) includes a first component horizontal surface arranged along its length direction, and the first connecting steel bar (4) is fixedly connected to the first component horizontal surface; the base inner ring frame (2) includes a plurality of inner ring frame beams fixedly connected end to end, and the two ends of each inner ring frame beam are respectively located on the outside of two inner ring frame beams fixedly connected to the inner ring frame beam.

2. The test base of the steel bar component according to claim 1, Features: A plurality of groups of first connecting steel bars (4) are fixedly connected at intervals on the horizontal surface of the first component along the length direction of the first component (1.1), each group of the first connecting steel bars comprises two first connecting steel bars (4) arranged in parallel at intervals along the width direction of the first component (1.1), one end of the first connecting steel bar (4) is fixedly connected to the horizontal surface of the first component, and the other end is arranged toward the bottom outer ring steel bar of the steel bar component segment above the test base of the steel bar component.

3. The test base of the steel bar component according to claim 1, Features: The inner ring skeleton beam comprises an inner ring skeleton beam horizontal plane arranged along its length direction, and the second connecting steel bar (14) is fixedly connected to the inner ring skeleton beam horizontal plane.

4. The test base of the steel bar component according to claim 3, Features: The horizontal plane of the inner ring skeleton beam is fixedly connected with a plurality of second connecting steel bars (14) at intervals along the length direction of the inner ring skeleton beam, one end of the second connecting steel bar (14) is fixedly connected to the horizontal plane of the inner ring skeleton beam, and the other end is arranged toward the bottom inner ring steel bar of the steel bar component segment above the test base of the steel bar component.

5. The test base of the steel bar component according to claim 1, Features: A plurality of angle steel frames (3) are arranged between the base outer ring frame (1) and the base inner ring frame (2), and the angle steel frames (3) include angle steel frame horizontal planes arranged along their length direction, and the base angle steels (5) are fixedly connected to the angle steel frame horizontal planes.

6. The test base of the steel bar component according to claim 5, Features: A plurality of base angle steels (5) are fixed at intervals on the horizontal plane of the angle steel frame along the length direction of the angle steel frame (3); one end of the base angle steel (5) is fixed on the horizontal plane of the angle steel frame, and the other end is arranged toward the bottom angle steel of the steel bar component segment above the test base of the steel bar component.

7. The test base of the steel bar component according to claim 6, Features: A horizontally arranged connecting steel plate (6) is fixed on the top surface of the base angle steel (5) and is used for welding and fixing to the bottom angle steel of the steel bar component segment above the test base of the steel bar component.

8. A test method for a test base of a steel bar component according to any one of claims 1 to 7, Features: Based on the first connecting steel bar (4) or the second connecting steel bar (14) of the test base of the steel bar component, a loading test is performed to verify the effectiveness of the steel bar connector (10); After the steel bar connector (10) passes the loading test, the steel bar segment above the test base of the steel bar segment is hoisted, the first connecting steel bar (4) is butt-jointed and fixed to the outer ring steel bar at the bottom of the steel bar segment above the test base of the steel bar segment, the second connecting steel bar (14) is butt-jointed and fixed to the inner ring steel bar at the bottom of the steel bar segment above the test base of the steel bar segment, and the angle steel at the bottom of the steel bar segment above the test base of the steel bar segment is welded and fixed to the base angle steel (5).

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