CN205426502U - Prestressing force strand steering gear mechanical testing device - Google Patents

Abstract

The utility model discloses a mechanical performance test device of a prestressed steel beam steering gear, which relates to the field of steel beam steering gears. The device comprises an anchoring assembly and a tensioning assembly. It includes an anchoring part for anchoring one end of the prestressed steel beam, and a first pressure ring for measuring the axial pressure of the prestressed steel beam at the position of the anchoring assembly. The horizontal height of the anchoring part is the same as that of the diverter; the tensioning assembly Located on the other side of the diverter, the tensioning assembly includes a tensioning part that tensions the other end of the prestressed steel beam, and a third pressure ring that measures the axial pressure of the prestressed steel beam at the position of the tensioning assembly. At the same time, the anchoring assembly And at least one of the tensioning components is adjustable in height. The utility model can test the performance parameters of the steering gear more conveniently and accurately.

Description

A test device for mechanical properties of prestressed steel beam diverter

technical field

The utility model relates to the field of steel beam diverters, in particular to a mechanical performance test device for prestressed steel beam diverters.

Background technique

In the prestressed tensioning of prestressed concrete structures, there are two construction techniques: pretensioning and posttensioning. The pretensioning method has the advantages of clear prestressing, no need for pipes, and no need for grouting, so it is gradually widely used. At the same time, broken-line beams can solve the shortcomings of the traditional linear beams that are limited in structural span and scale, so the pre-tensioned broken-line beams of prestressed concrete beams are gradually being applied and promoted. Therefore, it is very important to determine the mechanical performance parameters of the prestressed steel beam diverter. Existing tests on the performance of prestressed steel beam diverters are mainly aimed at the loss of prestress caused by the diverter. The test is carried out by pasting strain gauges on the surface of the steel strand. , it is difficult to directly measure the real strain of the steel strand, the error of the test result is large and the test of the performance parameters of the steering gear is not comprehensive enough.

Utility model content

Aiming at the defects existing in the prior art, the purpose of this utility model is to provide a mechanical performance test device of a prestressed steel beam steering gear, which can test the performance parameters of the steering gear more conveniently and accurately.

In order to achieve the above purpose, the technical solution adopted by the utility model is to include an anchoring assembly and a tensioning assembly, the anchoring assembly is located on one side of the steering gear, and the anchoring assembly includes an anchoring component for anchoring one end of the prestressed steel beam, And the first pressure ring for measuring the axial pressure of the prestressed steel beam at the anchor assembly position, the level of the anchor component is the same as that of the diverter; the tension assembly is located on the other side of the diverter, and the tension assembly Different from the height of the anchoring assembly, the tensioning assembly includes a tensioning part at the other end of the tensioning prestressed steel beam, and a third pressure ring for measuring the axial pressure of the prestressed steel beam at the position of the tensioning assembly. At the same time, At least one of the anchoring component and the tensioning component is adjustable in height.

On the basis of the above technical solution, both the first pressure ring and the third pressure ring are connected to a synchronous acquisition instrument.

On the basis of the above technical solution, the anchor assembly, diverter and tensioning assembly are all fixed on the ground anchor provided below the diverter.

On the basis of the above technical solution, the anchoring assembly also includes an anchoring frame, the anchoring frame is vertically fixed on the ground anchor, and the anchoring frame is provided with a slot for the vertical movement of the prestressed steel beam passing through the anchoring frame , the two ends of the first pressure ring are respectively provided with a first backing plate and a second backing plate.

On the basis of the above technical solution, the tensioning assembly further includes a reaction wall perpendicular to the ground anchor, and the two ends of the third pressure ring are respectively provided with a fourth backing plate and a fifth backing plate.

On the basis of the above technical solution, the steering gear is fixed on the ground anchor through the anchor rod, and the anchor rod passes through the ground anchor. the second pressure ring.

On the basis of the above technical solution, a bogie is fixed on the upper end of the anchor rod, and the two ends of the diverter are fixed on the bogie.

On the basis of the above technical solution, one end of the second pressure ring is provided with an anchor nut for fixing the anchor rod, and the other end is provided with a third backing plate.

On the basis of the above technical solution, the first pressure ring, the second pressure ring and the third pressure ring are all connected to a synchronous acquisition instrument.

On the basis of the above technical solution, it also includes a steering device arranged between the steering gear and the tensioning assembly, the steering gear includes a support frame and an auxiliary steering gear located on the supporting frame, the auxiliary steering gear and The levels of the tension members are the same.

Compared with the prior art, the utility model has the advantages of:

(1) The pressure value at both ends of the tensioned prestressed steel beam is measured through the pressure ring, and the data is collected through the synchronous acquisition instrument. The whole test process is easy to operate and the test data results are accurate.

(2) By adjusting the height of the prestressed steel beam at one end of the anchor assembly and the steering gear, the mechanical properties of the steering gear can be tested when the prestressed steel beam is at different steering angles.

(3) Through the mechanical performance test device of the prestressed steel tendon steering gear, not only the prestress loss of the prestressed steel tendon caused by the steering gear can be measured, but also the load transfer efficiency of the steering gear and the relationship between the steering gear and the prestressed steel beam can be measured. The coefficient of friction between them, the performance test is comprehensive.

Description of drawings

Fig. 1 is the structural schematic diagram of a kind of prestressed beam diverter mechanical performance test device of the present utility model;

Figure 2 is a side view of the steering gear.

In the figure: 1-anchor assembly, 101-anchor frame, 102-first backing plate, 103-first pressure ring, 104-second backing plate, 105-anchor component, 2-ground anchor, 3-diverter, 301 -Bogie, 302-Anchor rod, 303-Third backing plate, 304-Second pressure ring, 305-Anchor nut, 4-Steering device, 401-Support frame, 402-Auxiliary steering gear, 5-Prestressed steel beam , 6-tension assembly, 601-fourth backing plate, 602-third pressure ring, 603-fifth backing plate, 604-tensioning component, 605-reaction wall, 7-synchronous acquisition instrument.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Figs. 1 and 2, the utility model provides a mechanical performance test device for a prestressed steel beam diverter, including an anchor assembly 1 and a tension assembly 6, the anchor assembly 1 is located on one side of the diverter 3, and the anchor assembly 1 includes an anchor component 105 for anchoring one end of the prestressed steel beam 5, and a first pressure ring 103 for measuring the axial pressure of the prestressed steel beam 5 at the position of the anchor assembly 1, and the level of the anchor component 105 is the same as that of the diverter 3 The tension assembly 6 is located on the other side of the diverter 3, and the height of the tension assembly 6 is different from that of the anchor assembly 1, and the tension assembly 6 includes a tension member 604 at the other end of the tension prestressed steel beam 5, And the third pressure ring 602 for measuring the axial pressure of the prestressed steel beam 5 at the position of the tensioning assembly 6, the tensioning component 604 is generally a through-hole jack, and at least one of the anchor assembly 1 and the tensioning assembly 6 is adjustable in height . The anchoring assembly 1 , the steering gear 3 and the tensioning assembly 6 are all fixed on the ground anchor 2 provided below the steering gear 3 . Both the first pressure ring 103 and the third pressure ring 602 are connected to a synchronous acquisition instrument 7, and the synchronous acquisition instrument 7 collects the pressure values measured by the first pressure ring 103 and the third pressure ring 602, which is convenient and accurate.

The anchor assembly 1 specifically also includes an anchor frame 101, the anchor frame 101 is vertically fixed on the ground anchor 2, and the anchor frame 101 is provided with a slot for the vertical movement of the prestressed steel beam 5 passing through the anchor frame 101, the prestressed The steel beam 5 passes through the anchor frame 101 , and a first backing plate 102 and a second backing plate 104 sleeved on the prestressed steel beam 5 are provided at both ends of the first pressure ring 103 . The tensioning assembly 6 also includes a reaction wall 605 perpendicular to the ground anchor 2, the prestressed steel beam 5 passes through the reaction wall 605, and the two ends of the third pressure ring 602 are respectively provided with the prestressed steel beam 5 The fourth backing plate 601 and the fifth backing plate 603 on the top.

The diverter 3 is fixed on the ground anchor 2 through the anchor rod 302, and the anchor rod 302 passes through the ground anchor 2, and the part where the anchor rod 302 passes through the ground anchor 2 is provided with a device for measuring the vertical tension of the diverter 3 at the position of the ground anchor 2. The second pressure ring 304 is also connected to the synchronous acquisition instrument 7 . The prestressed steel beam 5 passes below the diverter 3, and one end of the second pressure ring 304 is provided with an anchor nut 305 for fixing the anchor rod 302, the height of the diverter 3 can be adjusted by rotating the anchor nut 305, and the second pressure The other end of the ring 304 is provided with a third pad 303 . A bogie 301 is fixed on the upper end of the anchor rod 302 , and the two ends of the diverter 3 are fixed on the bogie 301 . A steering device 4 is provided between the steering gear 3 and the tensioning assembly 6. The steering gear 4 includes a support frame 401 and an auxiliary steering gear 402 positioned on the support frame 401. The auxiliary steering gear 402 and the tensioning member 604 have the same level. And the auxiliary steering gear 402 and the steering gear 3 are steering gears of the same model.

During the test, by adjusting the height of the diverter 3 and the height of the prestressed steel beam 5 passing through the anchor frame 101, the level height of the diverter 3 and the prestressed steel beam 5 passing through the anchor frame 101 is always the same and low At the height of the prestressed steel beam 5 at the end of the tensioning assembly 6, after the prestressed steel beam 5 is stretched by the tensioning part 604, the steering gear 3 can be adjusted when the prestressed steel beam 5 is at different steering angles. The mechanical properties were tested.

According to the pressure value N1 of the first pressure ring 103, the pressure value _{N2 of} the second pressure ring 304 and the pressure value N3 of the _third pressure ring 602 collected by the synchronous acquisition instrument 7, it can be obtained:

The utility model is not only limited to the above-mentioned best implementation mode, anyone can draw other various forms of products under the enlightenment of the utility model, but no matter make any changes in its shape or structure, anyone who has the same features as the utility model The same or similar technical solutions are all within the scope of protection.

Claims (10)

1. A prestressed steel beam diverter mechanical performance test device is characterized in that, comprising: An anchor assembly (1), the anchor assembly (1) is located on one side of the diverter (3), and the anchor assembly (1) includes an anchor component (105) for anchoring one end of the prestressed steel beam (5), and The first pressure ring (103) for measuring the axial pressure of the prestressed steel beam (5) at the position of the anchor assembly (1), the level of the anchor component (105) is the same as that of the diverter (3); The tension component (6), the tension component (6) is located on the other side of the diverter (3), and the height of the tension component (6) is different from that of the anchor component (1), the tension component (6) is The assembly (6) includes a tension member (604) at the other end of the tensioned prestressed steel strand (5), and the third pressure ring ( 602), and at the same time, At least one of the anchoring component (1) and the tensioning component (6) is adjustable in height. 2. a kind of prestressed steel beam diverter mechanical property testing device as claimed in claim 1, is characterized in that: described first pressure ring (103) and the 3rd pressure ring (602) all connect a synchronous acquisition instrument ( 7). 3. a kind of prestressed steel beam diverter mechanical property testing device as claimed in claim 1, is characterized in that: described anchor assembly (1), diverter (3) and tension assembly (6) are all fixed on the On the ground anchor (2) that is provided with below the steering gear (3). 4. A kind of prestressed steel beam diverter mechanical property testing device as claimed in claim 3, is characterized in that: described anchor assembly (1) also comprises anchor frame (101), and described anchor frame (101) is vertically fixed On the ground anchor (2), and the anchor frame (101) is provided with a slot for the vertical movement of the prestressed steel beam (5) passing through the anchor frame (101), the first pressure ring (103) The two ends are respectively provided with a first backing plate (102) and a second backing plate (104). 5. A prestressed steel beam diverter mechanical performance test device as claimed in claim 3, characterized in that: the tension assembly (6) also includes a reaction wall (605) perpendicular to the ground anchor (2) ), the two ends of the third pressure ring (602) are respectively provided with a fourth backing plate (601) and a fifth backing plate (603). 6. A kind of prestressed steel beam diverter mechanical performance test device as claimed in claim 3, is characterized in that: described diverter (3) is fixed on the ground anchor (2) by anchor rod (302), and anchor The rod (302) passes through the ground anchor (2), and the part where the anchor rod (302) passes through the ground anchor (2) is provided with a second pressure ring for measuring the vertical tension of the steering gear (3) at the position of the ground anchor (2) (304). 7. A kind of prestressed steel beam diverter mechanical property testing device as claimed in claim 6, is characterized in that: the upper end of described anchor rod (302) is fixed with a bogie (301), and described diverter (3) The two ends are fixed on the bogie frame (301). 8. a kind of prestressed steel beam diverter mechanical property testing device as claimed in claim 6, is characterized in that: one end of described second pressure ring (304) is provided with the anchor nut (302) that is used for fixing anchor rod (302) 305), and the other end is provided with a third backing plate (303). 9. A prestressed steel beam diverter mechanical performance test device as claimed in claim 6, characterized in that: the first pressure ring (103), the second pressure ring (304) and the third pressure ring (602 ) are connected to a synchronous acquisition instrument (7). 10. A kind of prestressed steel beam diverter mechanical property test device as claimed in claim 1, is characterized in that: also comprises a diverter device that is arranged between described diverter (3) and tension assembly (6) (4), the steering device (4) includes a support frame (401) and an auxiliary steering gear (402) located on the support frame (401), the auxiliary steering gear (402) and the tension member (604) of the same level.