Deflection measuring device for i-beam live load test

Abstract

The utility model relates to structural engineering test measurement technical field, especially point to a kind of deflection measuring device for I-beam live load test. Including: height-adjustable lower component, can be supported on the ground below the I-beam;Upper component can be connected to the bottom surface of the I-beam, and the lower component corresponds and there is gap between upper and lower;Dial gauge, connected to the upper component, the dial gauge's measuring needle vertically downward and abuts on the lower component. Advantageous effect: by setting upper component and lower component, make dial gauge install on upper component and measuring needle abut on lower component, thereby avoid the influence of ground environment to dial gauge height lower, also avoid the problem that dial gauge measuring needle directly contacts I-beam and causes emptying or deflection.

Description

Technical Field

[0001] This utility model relates to the field of structural engineering test measurement technology, and specifically to a deflection measuring device for I-beam live load tests. Background Technology

[0002] During the construction and use of building structures, it is often necessary to conduct on-site live load tests on I-beams to verify their load-bearing capacity and deflection deformation. Current methods for beam deflection testing typically rely on manually setting up dial gauges or displacement gauges to measure the beam's deflection and reflect its stress performance. However, traditional testing methods have the following shortcomings: 1. Dial gauges often need to be placed at a low position under the beam, and the site environment is complex and easily affected by construction disturbances, which can lead to inaccurate readings; 2. The dial indicator probe is prone to detachment or misalignment from the bottom of the beam, affecting measurement accuracy; Therefore, there is an urgent need for a simple, easy-to-install, and accurate I-beam live load testing device to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a deflection measuring device for I-beam live load testing. This solves the problems of existing dial gauges being positioned too low and greatly affected by the field environment, and the dial gauge probes being prone to detachment and skewness.

[0004] The technical solution to achieve the above objectives is: This utility model provides a deflection measuring device for a live load test of an I-beam, comprising: a height-adjustable lower component that can be supported on the ground below the I-beam; an upper component that can be connected to the bottom surface of the I-beam, corresponding vertically to the lower component and having a gap between them; and a dial indicator connected to the upper component, with the probe of the dial indicator pointing vertically downward and abutting against the lower component.

[0005] Furthermore, the upper component includes: a connecting steel bar, the upper end of which can be connected to the I-beam; a bracket connected to the lower end of the connecting steel bar, and the dial indicator fixed on the bracket.

[0006] Furthermore, the support includes: a first horizontal bar and a second horizontal bar, which are horizontally connected to the lower end of the connecting steel bar, the second horizontal bar being located above the first horizontal bar with a gap between them, and the dial indicator being located between the first horizontal bar and the second horizontal bar; and a vertical bar, which is vertically arranged and connected between the first horizontal bar and the second horizontal bar.

[0007] Furthermore, the upper end of the dial indicator is provided with a fixing rod, which passes upward through the second crossbar and is fixed to the second crossbar. The probe can be retracted into the dial indicator, and the probe passes downward through the first crossbar and is movably connected to the second crossbar.

[0008] Furthermore, the upper end of the connecting steel bar is provided with a connecting piece, which is connected to the I-beam.

[0009] Furthermore, the lower component includes: a support sleeve, the lower end of which can be fixed to the ground; a support screw, the lower end of which can be inserted into the support sleeve and threadedly connected to the inner wall of the support sleeve; and a support top plate, which is located at the upper end of the support screw. The support top plate is horizontally arranged, and the probe of the dial indicator abuts against the support top plate.

[0010] Furthermore, the lower end of the support sleeve is provided with a base, which is fixed to the ground by expansion bolts.

[0011] Furthermore, an adjustment knob is fixedly sleeved on the support screw.

[0012] Furthermore, the upper end of the support screw is provided with a top support, and the support top plate is fixedly connected to the top support.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By setting up upper and lower components, the dial indicator is installed on the upper component and the probe abuts against the lower component, thus avoiding the influence of the ground environment due to the low height of the dial indicator, and also avoiding the problem of the dial indicator's probe directly contacting the I-beam, causing it to become loose or skewed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the deflection measuring device for I-beam live load testing according to this utility model.

[0015] Figure 2 This is a schematic diagram of the upper component structure of the deflection measuring device for I-beam live load testing according to this utility model.

[0016] Figure 3 This is a schematic diagram of the lower component structure of the deflection measuring device for I-beam live load testing according to this utility model.

[0017] Legend: 1. Structural column; 2. I-beam; 3. Dial indicator; 31. Fixing rod; 32. Probe; 4. Upper component; 41. Connecting reinforcement; 42. First horizontal bar; 43. Second horizontal bar; 44. Vertical bar; 45. Connecting piece; 5. Lower component; 51. Support sleeve; 52. Support screw; 53. Support top plate; 54. Adjusting knob; 55. Top support; 56. Bottom support; 57. Expansion bolt. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] See Figure 1 This invention provides a deflection measuring device for I-beam live load testing, addressing the problems of existing dial gauges being too low in position and significantly affected by the field environment, and the tendency for the dial gauge's probe to detach or deviate. To overcome these issues, this invention discloses an upper and lower assembly. The dial gauge is mounted on the upper assembly, with the probe abutting against the lower assembly. When the I-beam exhibits downward deflection, the upper assembly moves the dial gauge downward, causing the probe to retract into the dial gauge, thus measuring the I-beam deflection. This avoids the problems of the dial gauge being too low, significantly affected by the ground environment, and the probe detaching or deviating due to direct contact with the I-beam.

[0020] The lower component is height-adjustable, enabling deflection measurement of I-beams at different heights.

[0021] The following description, in conjunction with the accompanying drawings, describes a deflection measuring device for live load testing of I-beams according to this utility model.

[0022] See Figure 1 This diagram shows the overall structure of the deflection measuring device for I-beam live load testing according to this invention. The following is a related illustration. Figure 1 This invention describes a deflection measuring device for live load testing of I-beams.

[0023] like Figure 1 As shown, the present invention provides a deflection measuring device for a live load test of an I-beam, comprising: a height-adjustable lower component 5, which can be supported on the ground below the I-beam 2; an upper component 4, which can be connected to the bottom surface of the I-beam 2, corresponding vertically to the lower component 5 and having a gap between them; and a dial indicator 3, which is connected to the upper component 4, with the probe 32 of the dial indicator 3 pointing vertically downward and abutting against the lower component 5.

[0024] By placing the upper component 4 above the lower component 5, the dial indicator 3 is prevented from directly contacting the I-beam 2, and is positioned far from the ground, thus avoiding the influence of the ground environment on the dial indicator 3. When the I-beam 2 deflects downwards, the upper component 4 moves downwards along with the I-beam 2, causing the dial indicator 3 to move downwards as well. Since the probe 32 of the dial indicator 3 is in contact with the lower component, the probe 32 retracts into the dial indicator 3, allowing the dial indicator 3 to measure the deflection of the I-beam 2.

[0025] Specifically, the I-beam 2 is installed between two adjacent structural columns 1, and the two structural columns 1 are fixed to the ground.

[0026] like Figure 2 As shown, in one specific embodiment, the upper component 4 includes: a connecting steel bar 41, the upper end of which can be connected to the I-beam 2; a bracket connected to the lower end of the connecting steel bar 41, and the dial indicator 3 fixed on the bracket.

[0027] In one specific embodiment, the support includes: a first horizontal bar 42 and a second horizontal bar 43, horizontally connected to the lower end of the connecting steel bar 41, the second horizontal bar 43 being disposed above the first horizontal bar 42 with a gap between them, and a dial indicator 3 disposed between the first horizontal bar 42 and the second horizontal bar 43; and a vertical bar 44, vertically disposed and connected between the first horizontal bar 42 and the second horizontal bar 43. The first horizontal bar 42, the second horizontal bar 43, and the vertical bar 44 are all made of square steel.

[0028] In one specific embodiment, the upper end of the dial gauge 3 is provided with a fixing rod 31, the fixing rod 31 passes upward through the second crossbar 43 and is fixed to the second crossbar 43, the probe 32 can be retracted into the dial gauge 3, and the probe 32 passes downward through the first crossbar 42 and is movably connected to the second crossbar 42.

[0029] In one specific embodiment, the upper end of the connecting steel bar 41 is provided with a connecting piece 45, which is connected to the I-beam 2. The connecting piece 45 is a metal sheet and is connected to the I-beam 2 by welding.

[0030] like Figure 3 As shown, in one specific embodiment, the lower component 5 includes: a support sleeve 51, the lower end of which can be fixed to the ground; a support screw 52, ​​the lower end of which can be inserted into the support sleeve 51 and threadedly connected to the inner wall of the support sleeve 51; and a support top plate 53, which is disposed at the upper end of the support screw 52. The support top plate 53 is horizontally arranged, and the probe 32 of the dial indicator 3 abuts against the support top plate 53.

[0031] Specifically, the inner wall of the support sleeve 51 is provided with an internal thread, and the outer surface of the support screw 52 is provided with an external thread. The external thread of the support screw 52 is adapted to the internal thread of the support sleeve 51.

[0032] In one specific embodiment, the lower end of the support sleeve 51 is provided with a base 56, and the base 56 is fixed to the ground by expansion bolts 57.

[0033] In one specific embodiment, an adjustment knob 54 is fixedly sleeved on the support screw 52. By setting the adjustment knob 54, the support screw 52 can be rotated by rotating the adjustment knob 54.

[0034] In one specific embodiment, the upper end of the supporting screw 52 is provided with a top support 55, and the supporting top plate 53 is fixedly connected to the top support 55. The top support 55 and the supporting top plate 53 are fixed by welding.

[0035] The following is a detailed description of the use of the deflection measuring device for I-beam live load testing according to this utility model.

[0036] Fix the upper end of the connecting steel bar 41 to the position to be fixed on the bottom surface of the I-beam 2, then assemble the bracket with the dial indicator 3, and fix the bracket to the lower end of the connecting steel bar 41.

[0037] Then insert the support screw 52 into the support sleeve 51, and fix the support sleeve 51 to the ground with the expansion bolt 57.

[0038] By rotating the adjustment knob 54, the support screw 52 is driven to rotate, thereby adjusting the length of the support screw 52 extending from the support sleeve 51, so as to adjust the overall height of the lower component 5, so that the probe 32 of the dial indicator 3 abuts against the support top plate 53.

[0039] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A deflection measuring device for live load testing of I-beams, characterized in that: include: The height-adjustable lower component (5) can be supported on the ground below the I-beam (2); The upper component (4) can be connected to the bottom surface of the I-beam (2), and is vertically corresponding to the lower component (5) with a gap between them; A dial indicator (3) is connected to the upper component (4), and the probe (32) of the dial indicator (3) is vertically downward and abuts against the lower component (5).

2. The deflection measuring device for I-beam live load testing according to claim 1, characterized in that: The upper component (4) includes: Connecting steel bar (41), the upper end of which can be connected to the I-beam (2); The bracket is connected to the lower end of the connecting steel bar (41), and the dial indicator (3) is fixed on the bracket.

3. The deflection measuring device for I-beam live load testing according to claim 2, characterized in that: The support includes: The first horizontal bar (42) and the second horizontal bar (43) are horizontally connected to the lower end of the connecting steel bar (41). The second horizontal bar (43) is located above the first horizontal bar (42) and there is a gap between them. The dial indicator (3) is located between the first horizontal bar (42) and the second horizontal bar (43). A vertical bar (44) is vertically positioned and connected between the first horizontal bar (42) and the second horizontal bar (43).

4. The deflection measuring device for I-beam live load testing according to claim 3, characterized in that: The dial indicator (3) is provided with a fixing rod (31) at its upper end. The fixing rod (31) passes upward through the second crossbar (43) and is fixed to the second crossbar (43). The probe (32) can be retracted into the dial indicator (3), and the probe (32) passes downward through the first crossbar (42) and is movably connected to the second crossbar (43).

5. The deflection measuring device for I-beam live load testing according to claim 2, characterized in that: The upper end of the connecting steel bar (41) is provided with a connecting piece (45), which is connected to the I-beam (2).

6. The deflection measuring device for I-beam live load testing according to claim 1, characterized in that: The lower component (5) includes: The lower end of the support sleeve (51) can be fixed to the ground; The lower end of the support screw (52) can be inserted into the support sleeve (51) and threadedly connected to the inner wall of the support sleeve (51); A support top plate (53) is provided at the upper end of the support screw (52). The support top plate (53) is horizontally arranged, and the probe (32) of the dial indicator (3) abuts against the support top plate (53).

7. The deflection measuring device for I-beam live load testing according to claim 6, characterized in that: The lower end of the support sleeve (51) is provided with a base (56), which is fixed to the ground by expansion bolts (57).

8. A deflection measuring device for I-beam live load testing according to claim 6, characterized in that: An adjustment knob (54) is fixedly sleeved on the support screw (52).

9. A deflection measuring device for I-beam live load testing according to claim 6, characterized in that: The upper end of the support screw (52) is provided with a top support (55), and the support top plate (53) is fixedly connected to the top support (55).

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