CN217237515U - Precast concrete stair loading test device - Google Patents
Precast concrete stair loading test device Download PDFInfo
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- CN217237515U CN217237515U CN202220274902.4U CN202220274902U CN217237515U CN 217237515 U CN217237515 U CN 217237515U CN 202220274902 U CN202220274902 U CN 202220274902U CN 217237515 U CN217237515 U CN 217237515U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The utility model discloses a precast concrete stair load test device, including setting up a plurality of jacks at the prefabricated stair upper surface of marking time, the jack upper end is connected through connecting rod and zigzag's steel truss, steel truss's the left and right sides both ends are connected respectively at fixed subaerial left side steel framework and right side steel framework, the left end of prefabricated stair is shelved on the steel framework of left side, and the right-hand member is shelved on fixing subaerial ground steel framework, just ground steel framework is connected bottom the right side steel framework. The test device does not need to be stacked and weighted, has high loading speed, convenient control of graded loading, and can be stopped at any time, and the test process is safe and reliable.
Description
Technical Field
The utility model relates to a precast concrete component structural performance tests technical field, concretely relates to precast concrete stair load test device.
Background
The precast concrete stairs are common structural members in fabricated buildings, and according to relevant standard standards, the precast concrete stairs are sampled to be subjected to structural performance tests, and the test mainly aims at testing the bearing capacity of the precast concrete stairs, including bending bearing capacity and shearing bearing capacity. The common loading method is carried out by stacking loading blocks. The disadvantages of this method are: a large number of load blocks need to be prepared, and the load blocks need to be carried manually during loading; due to the requirement of graded loading, the load blocks need to be stacked for multiple times, and are carried up and down on the stairs on which the load blocks are stacked, so that certain safety risk exists in the loading operation process; the number of the load blocks is large, manual stacking can be adopted only, and the loading speed is low.
SUMMERY OF THE UTILITY MODEL
The utility model is directed to the aforesaid technical problem, provide precast concrete stair load test device, need not pile and carry and the counter weight, loading speed is fast, and hierarchical loading control is convenient, and can terminate at any time, test process safe and reliable.
In order to solve the technical problem, the utility model provides a precast concrete stair load test device, including setting up a plurality of jacks at the precast stair upper surface of marking time, the jack upper end is passed through connecting rod and zigzag shaped steel truss connection, fixed subaerial left side steel framework and right side steel framework are connected respectively to both ends about the steel truss, the left end of precast stair is shelved on the steel framework of left side, and the right-hand member is shelved on fixing subaerial ground steel framework, just ground steel framework is connected bottom the right side steel framework.
Preferably, the loading direction of the jack is downward, and the upward counter force of the jack is balanced through a structure consisting of the steel truss and the steel framework.
Preferably, the left steel framework is arranged to be of a portal-shaped upright column structure, an intermediate steel beam capable of being adjusted up and down is arranged between two upright columns, and the prefabricated staircase is placed on the intermediate steel beam.
Preferably, the steel truss comprises a steel truss lower chord longitudinal beam, a plurality of second reserved bolt holes are formed in the steel truss lower chord longitudinal beam, and the connecting rod is fixed on the second reserved bolt holes through bolts.
And optimally, a plurality of jacks are uniformly distributed on the steps and the platform of the prefabricated staircase in the horizontal direction.
The utility model discloses compare in prior art and obtained following technological effect:
the utility model discloses precast concrete stair load test device compares with test method commonly used, adopts the test device of this method to carry out precast stair load test, has avoided the troublesome and unsafe factor of transport brought through stacking the loading piece loading, and the loading size is convenient to be controlled, and the process of the test is safe controllable, has saved the manual work, and has avoided because of using the loading piece and stack the waste to the resource.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a perspective view of the prefabricated staircase test of the present invention;
FIG. 2 is a left side elevation of the steel frame of the present invention;
FIG. 3 is a side view of the left side steel frame of the present invention;
FIG. 4 is a front view of the steel truss structure of the present invention;
FIG. 5 is a side view of the steel truss structure of the present invention;
FIG. 6 is a front view of the connecting rod of the present invention;
fig. 7 is a top view of the connecting rod of the present invention;
FIG. 8 is a schematic view of the structure of the ground steel framework of the present invention;
FIG. 9 is a right side elevation of the steel frame of the present invention;
wherein 1-left steel framework; 11-left steel upright; 12-a first top steel beam; 13-an intermediate steel beam; 14-a first bottom steel beam; 15-steel beam end plates; 16-bolt; 17-a first reserved bolt hole; 18-end plate stiffeners; 2-right side steel framework; 21-right steel upright; 22-second top steel beam; 23-a second bottom steel beam; 3-a steel truss; 31-steel truss upper chord; 32-steel truss lower chord; 33-steel truss support diagonal rods; 34-steel truss vertical web members; 35-steel truss diagonal web members; 36-steel truss lower chord transverse beam; 37-steel truss lower chord longitudinal beam; 38-second reserved bolt hole; 39-steel truss end tie rods; 4-a ground steel framework; 41-steel frame beam; 42-steel frame longitudinal beam; 43 steel frame connecting beams; 44-a latch; 45-reserving bolt holes; 5-a connecting rod; 51-round tube connecting rods; 52-connecting the rod upper end plate; 53-connecting the rod upper screw; 54-connecting the lower end plate of the rod; 55-lower end plate stiffening ribs; 6-a jack; 7-prefabricating the stairs.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a precast concrete stair load test device need not pile and carry and the counter weight, and the loading speed is fast, and hierarchical loading control is convenient, and can terminate at any time, test process safe and reliable.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the utility model provides a precast concrete stair loading test device, including setting up a plurality of jacks 6 on precast concrete stair 7 step upper surface, according to the difference of stair span, adopt different quantity of jacks 6, the loading power size is confirmed in order to satisfy the bearing capacity of bending and the bearing capacity requirement of examining precast concrete stair; 6 upper ends of jack are connected with zigzag steel truss 3 through connecting rod 5, fixed subaerial left side steel framework 1 and right side steel framework 2 are connected respectively at both ends about steel truss 3, the left end of prefabricated staircase 7 is shelved on left side steel framework 1, and the right-hand member is shelved on fixing subaerial ground steel framework 4, just ground steel framework 4 is connected with 2 bottoms on the right side steel framework.
Specifically, in order to facilitate the graded loading and improve the loading speed, the loading direction of the jack 6 is downward, and the upward counter force of the jack is balanced through a structure formed by the steel truss and the steel framework.
Specifically, in order to adapt to stairs with different heights, the left steel framework 1 is arranged into a door-shaped upright column structure, an intermediate steel beam 13 which can be adjusted up and down is arranged between two upright columns, and the prefabricated stairs 7 are placed on the intermediate steel beam 13.
Specifically, as shown in fig. 2 to 3, in the embodiment of the present disclosure, the left steel framework 1 includes two left steel columns 11 perpendicular to the ground, a first top steel beam 12 connected to the tops of the two left steel columns 11, an intermediate steel beam 13 located below the first top steel beam 12, and a first bottom steel beam 14 located at the bottom of the two left steel columns 11; set up a plurality of first reserved bolt holes 17 on the left side steel column 1, middle girder steel 13 passes through girder steel end plate 15 bolt 16 and connects on first reserved bolt hole 17, according to prefabricated staircase 7's height, can connect on different first reserved bolt holes 17.
Specifically, the steel beam end plate 15 is further provided with an end plate stiffening rib 18.
Specifically, in order to adapt to different stair heights, the steel truss 3 comprises a steel truss lower chord longitudinal beam 37, a plurality of second reserved bolt holes 38 are formed in the steel truss lower chord longitudinal beam 37, and the connecting rod 5 is fixed on the second reserved bolt holes 38 through bolts.
Specifically, as shown in fig. 4-5, in the embodiment of the present disclosure, the steel truss 3 includes an upper chord member 31 and a lower chord member 32 of the steel truss, which are parallel to the inclined direction of the prefabricated staircase, a plurality of vertical web members 34 of the steel truss are disposed between the upper chord member 31 and the lower chord member 32 of the steel truss, two ends of the vertical web members are provided with inclined support members 33 of the steel truss for connection, and inclined web members 35 of the steel truss are disposed between the two vertical web members 34 of the steel truss in a crossing manner; a plurality of steel truss lower chord transverse beams 36 and steel truss lower chord longitudinal beams 37 are arranged between the two steel truss lower chord members 32, a plurality of second reserved bolt holes 38 are arranged on the steel truss lower chord longitudinal beams 37, and a steel truss end tie rod 39 is used for being connected with the left side steel framework 1 and the right side steel framework 2 to enhance strength.
Specifically, a plurality of jacks 6 are uniformly distributed on the steps and the platform of the prefabricated staircase 7 in the horizontal direction.
Specifically, as shown in fig. 6 to 7, in the embodiment of the present disclosure, the connecting rod 5 includes a circular tube connecting rod 51, a connecting rod upper end plate 52, a connecting rod upper screw 53, a connecting rod lower end plate 54, and a lower end plate stiffener 55.
Specifically, in the embodiment of the present invention, as shown in fig. 8, the ground steel frame 4 includes a steel frame cross beam 41, a steel frame longitudinal beam 42, a steel frame connecting beam 43, a latch 44, and a reserved latch hole 45.
Specifically, in the embodiment of the present solution, as shown in fig. 9, the right steel frame 2 includes a right steel pillar 21, a second top steel beam 22, and a second bottom steel beam 23.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for those skilled in the art, the idea of the present invention may be changed in the specific embodiments and the application range. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. Precast concrete stair load test device, its characterized in that, including setting up a plurality of jacks at the prefabricated stair upper surface of marking time, the jack upper end is passed through connecting rod and zigzag's steel truss connection, fixed subaerial left side steel framework and right side steel framework are connected respectively to the left and right ends of steel truss, the left end of prefabricated stair is shelved on the steel framework of left side, and the right-hand member is shelved on fixing subaerial ground steel framework, just ground steel framework is connected bottom the right side steel framework.
2. The precast concrete stair loading test device of claim 1, wherein the jack is loaded in a downward direction.
3. The precast concrete stair loading test device of claim 1, wherein the left steel frame is provided in a portal column structure, an intermediate steel beam which can be adjusted up and down is provided between two columns, and the precast stair rests on the intermediate steel beam.
4. The precast concrete stair loading test device of claim 1, wherein the steel truss comprises a steel truss lower chord longitudinal beam, a plurality of second reserved bolt holes are formed in the steel truss lower chord longitudinal beam, and the connecting rod is fixed on the second reserved bolt holes through bolts.
5. The precast concrete stair loading test device of claim 1, wherein a plurality of the jacks are uniformly distributed on the steps and the platform of the precast stair in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220274902.4U CN217237515U (en) | 2022-02-10 | 2022-02-10 | Precast concrete stair loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220274902.4U CN217237515U (en) | 2022-02-10 | 2022-02-10 | Precast concrete stair loading test device |
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| Publication Number | Publication Date |
|---|---|
| CN217237515U true CN217237515U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220274902.4U Active CN217237515U (en) | 2022-02-10 | 2022-02-10 | Precast concrete stair loading test device |
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| CN (1) | CN217237515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117491173A (en) * | 2023-12-22 | 2024-02-02 | 丹阳市建设工程质量检测中心 | Slip table formula stair component structural performance detecting system |
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2022
- 2022-02-10 CN CN202220274902.4U patent/CN217237515U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117491173A (en) * | 2023-12-22 | 2024-02-02 | 丹阳市建设工程质量检测中心 | Slip table formula stair component structural performance detecting system |
| CN117491173B (en) * | 2023-12-22 | 2024-04-09 | 丹阳市建设工程质量检测中心 | Slip table formula stair component structural performance detecting system |
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