AU2020101725A4 - A self-balance truss joint test device and a test method thereof - Google Patents
A self-balance truss joint test device and a test method thereof Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The invention provides a self-balance truss joint test device and a test method thereof
in the field of civil engineering test technology, which includes at least two sets of loading
components, an outer column 1 and an outer column 2, an upper horizontal beam is
provided between the outer column 1 and the outer column 2, and the lower side of the
upper horizontal beam between the outer column 1 and the outer column 2 is provided
with inner column 1 and inner column 2 spaced in the left and right directions, the first
outer column, the first inner column, the second inner column and the first outer column
are respectively provided with an outer connecting groove one, an inner connecting
groove one, an inner connecting groove two and an outer connecting groove two which
are vertically arranged, respectively.
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110
3 2112
Figure 1
Description
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3 2112
Figure 1
PATENTS ACT 1990
A self-balance truss joint test device and a test method thereof
The invention is described in the following statement:-
A self-balance truss joint test device and a test method thereof
The invention belongs to the technical field of civil engineering tests, and particularly
relates to a self-balance truss joint test device.
Wood truss is a structure formed by connecting truss memebers at both ends by bolts
or toothed plates, and is generally a plane or space structure with triangular or trapezoidal
shapes, the truss members mainly bear axial tension or pressure, so that the strength of the
material can be fully utilized. When the span is large, it can save material compared with
the solid beam, reduce its own weight and promote its rigidity.
The failure forms of wooden trusses include rod tension and compression failure,
compression instability failure and node failure. Instability failure and node failure are
more common, the first two failure forms belong to unidirectional force, and the force form
is single, the ultimate bearing capacity of the rod can be obtained through unidirectional
force test and calculation, the wood truss node is the key part of the truss structure, and the
stress situation is also the most complicated. It is difficult to obtain the ultimate bearing
capacity of the node in conventional theoretical calculations, and it usually needs to be
determined through experiments, the existing test technology usually requires a complete
truss test to determine the bearing capacity of the node, and only the ultimate bearing
capacity of the first damaged node in the truss can be determined, therefore,Therefore, the amount of test work is large and will cause waste. To quickly and effectively obtain the bearing capacity of a specific node of a wooden truss, it is necessary to achieve a single node test. However, when doing a single node test, how to realize the simultaneous loading of the node load and the members to achieve the purpose of simulating the real force of the truss node is the key to the test.
In view of the shortcomings in the prior art, the purpose of the present invention is to
overcome the above shortcomings in the prior art and provide a self-balance truss joint test
device. To solve the technical problem that the truss node cannot be loaded synchronously
in the prior art, the present invention can realize the synchronous loading of the wooden
truss node, and simulate the real stress condition of the truss node.
The purpose of the present invention is achieved as follows: a self-balancing beam
truss joint test device includes at least two sets of loading components, outer column 1 and
outer column 2, and an upper horizontal beam is arranged between the outer colunm 1 and
the outer column 2, the lower side of the upper horizontal beam between the outer colum
1 and the outer column 2 is provided with an inner column 1 and an inner column 2 spaced
in the left and right upwards, the outer column 1, the inner column 1, the inner column 2
and the outer column 1 are respectively provided with an outer connecting groove one, an
inner connecting groove one, an inner connecting groove two and an outer connecting
groove two which are arranged vertically, respectively, the loading assembly includes a
connecting plate and two opposite loading arms, one loading arm is connected to the other loading arm through the connecting plate, and two loading slots are opened at intervals on the loading arm. When loading components are connected between the outer column 1 and the inner column 1, the two loading arms are respectively on the front and rear sides of the outer column 1, and the two loading slots are connected with the outer connecting slot 1 and the inner connecting slot 1, respectively. When the loading assembly is connected between the second outer column and the second inner column, the two loading arms are respectively on the front and rear sides of the second outer column, and the two loading grooves are respectively connected with the second outer connecting groove and the second inner connecting groove.
In order to further improve the scope of application of the present invention, a
lower horizontal beam and a support beam are provided between the inner column 1
and the inner column 2, and the lower horizontal beam is below the upper horizontal
beam, the upper horizontal beam and the lower horizontal beam are respectively
provided with an upper horizontal connecting groove and a lower horizontal
connecting groove, and when a loading component is connected between the upper
horizontal beam and the lower horizontal beam, the two loading grooves are
respectively connected with the upper horizontal connecting groove and the lower
horizontal connecting groove, and the supporting beam is below the lower horizontal
beam.
In order to further ensure the reliability of the test, a number of connecting holes
are arranged on the loading arm between the two loading slots to facilitate the
connection with the connecting plate; There are a number of mounting holes in the
front and rear direction of the outer column 1, a number of mounting holes two are opened in the front and rear direction of the second outer column.
In order to further facilitate the connection of loading components, a screw rod
that can pass through the loading slot is also included.
In order to further facilitate the adjustment of the position of the loading
assembly, the loading assembly is provided with two sets, and the two loading arms
of each set of loading assembly are respectively on the front and rear sides of the
outer pillar one, the two loading slots of each group of loading components are
respectively connected to the outer connecting slot 1 and the inner connecting slot 1,
and the two loading arms of each group of loading components are provided with a
space for accommodating the loading test piece on the side facing inward, the loading
test piece includes an upper chord and a lower chord, one end of the upper chord and
one end of the lower chord are inserted into the space, one end of the upper chord is
connected with the two upper loading arms, and one end of the lower chord is
connected with the two lower loading arms connection, the other end of the upper
chord and the other end of the lower chord are integrated, and the connecting plate is
connected to the loading arm between the outer column 1 and the inner column 1.
As a further improvement of the present invention, the loading assembly is
provided with two sets, and the two loading arms of each set of loading assembly are
respectively on the front and rear sides of the outer column 2, the two loading slots
of each group of loading components are respectively communicated with the outer
connecting slot 2 and the inner connecting slot 2.
As a further improvement of the present invention, the loading components are provided in three groups, and the two loading arms of the first group of loading components are respectively on the front and rear sides of the outer pillar one, the two loading slots of each loading arm of the first group of loading components are respectively connected to the outer connecting slot 1 and the inner connecting slot 1, and the two loading arms of the second group of loading components are respectively on the front and back sides of the upper horizontal beam, the two loading slots of each loading arm in the second group of loading components are connected to the upper horizontal connecting groove and the lower horizontal connecting groove respectively, the two loading arms of the third group of loading components are respectively on the front and rear sides of the outer column 2, the two loading slots of each loading arm in the third group of loading components are respectively connected with the outer connecting slot 2 and the inner connecting slot 2, and the two loading arms of each group of loading components have some space for accommodating the loading test piece on the side facing inward, the loading test piece includes a left chord, a vertical rod and a right chord. One end of the left chord is inserted into the space of the first group of loading components, and one end of the vertical rod is inserted into the space of the second group of loading components. One end of the right chord is inserted into the space of the third group of loading components, one end of the left chord is connected to the two loading arms of the first group of loading components, and one end of the vertical rod is connected to the two loading arms of the second group of loading components connection, One end of the right chord is connected with the two loading arms of the third group of loading components, and the other end of the left chord, the other end of the vertical rod and the other end of the lower chord are integrated.
As a further improvement of the present invention, the loading components are
provided in four groups, and the two loading arms of the first group of loading
components are respectively on the front and back sides of the outer pillar one, the
two loading slots of each loading arm of the first group of loading components are
respectively connected to the outer connecting slot 1 and the inner connecting slot 1,
and the two loading arms of the second group of loading components are respectively
on the front and back sides of the upper horizontal beam, the two loading slots of each
loading arm of the second group of loading assemblies are connected to the upper
horizontal connecting slot and the lower horizontal connecting slot respectively, the
two loading arms of the third group of loading assemblies are respectively on the front
and rear sides of the upper horizontal beam, the two loading slots of each loading arm
of the third group of loading components are connected to the upper horizontal
connecting groove and the lower horizontal connecting groove respectively, the two
loading arms of the fourth group of loading components are respectively on the front
and back sides of the outer column 2, the two loading slots of each loading arm in the
fourth group of loading assemblies are respectively connected with the outer
connecting slot 2 and the inner connecting slot 2, and the two loading arms of each
set of loading assembly have some space for accommodating the loading test piece on
the inwardly arranged side , the loading specimen includes the lower left chord, the
upper left chord, the upper right chord and the lower right chord. One end of the lower
left chord is inserted into the space of the first set of loading components, and one
end of the upper left chord is inserted into the space of the second set of loading components. One end of the upper right chord is inserted into the space of the third group of loading components, one end of the lower right chord is inserted into the space of the fourth group of loading components, and one end of the left lower chord is connected to the two loading arms of the first group of loading components. One end of the upper left chord is connected with the two loading arms of the second group of loading components, and one end of the upper right chord is connected with the two loading arms of the third group of loading components. One end of the lower right chord is connected with the two loading arms of the third group of loading components, and the other end of the lower left chord, the other end of the upper left chord, the other end of the upper right chord and the other end of the lower right chord are integrated, the first group of loading components, the second group of loading components, the third group of loading components, and the fourth group of loading components are sequentially arranged from the direction of the outer column 1 to the outer column 2.
The method of using a self-balancing beam truss joint test device for testing
includes the following steps:
(1) Install a set of loading components: the first screw passes through the outer
connecting groove 1, and the second screw passes through the inner connecting
groove 1. After adjusting the position of the screw, Use two fastening nuts to screw
on the first screw rod and fasten them on the front and back sides of the outer column
1 respectively. Use two fastening nuts to screw on the second screw rod and fasten
them to the front and back of the inner column 1, the two loading arms are respectively
supported on the front and rear of the first screw via the upper loading slot, and the two loading arms are respectively supported on the front and rear of the second screw via the lower loading slot;
(2) Install another set of loading components: the third screw passes through the
outer connecting groove 1, and the fourth screw passes through the inner connecting
groove 1. After adjusting the position of the screw, using two fastening nuts to screw
on the third screw rod and fasten them to the front and back sides of the outer column
1, and use two fastening nuts to screw on the fourth screw rod and fasten them to the
front and back of the inner column 1, the two loading arms are respectively supported
at the front and rear of the third screw via the upper loading slot, and the two loading
arms are respectively supported at the front and rear of the fourth screw via the lower
loading slot, and the two loading arms are kept horizontal;
(3) The rolling bearing is fixedly installed on the upper side of the supporting
beam, the rolling bearing is connected with the loading test piece, the upper chord is
inserted into the space of a group of loading components, and the upper chord is
connected with the corresponding two loading arms, the lower chord is inserted into
the space of another set of loading components, the lower chord is connected to the
corresponding two loading arms, the upper chord is parallel to the upper loading arm,
and the lower chord remains horizontal;
(4) Install displacement meters along the axial direction on the side with the
upper chord facing upward and the side with the lower chord facing downward to
measure the deformation and displacement of the rod;
(5) Fix the angle adjustment pad on the outer column 1 between the two loading arms above, and the angle adjustment pad faces the inner column 1 and the plane is parallel to the direction of the upper chord axis;
(6) Install a jack on the upper connecting plate, the load of the jack acts on the
angle adjustment pad to achieve pressure on the upper chord, and install the jack on
the lower connecting plate. Make the load of the jack act on the inner column 1 to
realize the application of tensile force on the lower chord; load the jack in stages until
the loading specimen is damaged.
Compared with the prior art, the present invention has the following technical
effects: (1) With the joint arrangement of various beams, connecting grooves, loading
components and other components, the bearing capacity test of a single truss node can
be quickly and effectively performed, the operation is simple and convenient, which
can meet the test requirements of various forms of wood truss nodes, and has a wider
application range; (2) Each beam forms a self-balanced reaction force frame, which
automatically balances the force transferred from the loading specimen during the
test.
Figure 1 is the first three-dimensional structure diagram of the present invention.
Fig. 2 is a partial enlarged view of A in Fig. 1.
Figure 3 is the second three-dimensional structure of the present invention.
Fig. 4 is a partial enlarged view of B in Fig. 3.
Figure 5 is the first view of the front view of the present invention.
Figure 6 is the second front view of the present invention when it is implemented.
Fig. 7 is the third front view when the present invention is implemented.
Figure 8 is the fourth front view of the present invention.
1: inner column 2, 2 :support beam, 3: inner column 1, 4 :outer connecting slot 1, 5:
loading assembly, 501 loading arm, 502 connecting plate, 503 connecting hole, 504 loading
slot, 6: outer column 1, 7 :upper horizontal Beam, 8:upper horizontal connecting groove,
9: lower horizontal beam, 10: outer connecting groove two, 11: outer column 2, 12: inner
connecting groove two, 13: nut, 14: screw, 15: rolling bearing, 16: mounting hole three, 17:
mounting hole one, 18: Mounting hole two, 19: angle adjustment pads, 20: lower horizontal
connection slots.
A self-balancing beam truss joint test device as shown in Figures 1 to 4, including a
number of screws and at least two sets of loading components, outer column 1 and outer
column 2, and an upper horizontal beam is arranged between the outer column 1 and the
outer column 2 , the lower side of the upper horizontal beam between the outer column 1
and the outer column 2 is provided with an inner column 1 and an inner column 2 spaced
in the left and right upwards, the first outer column, the first inner column, the second inner
column and the first outer column are respectively provided with an outer connecting groove one, an inner connecting groove one, an inner connecting groove two and an outer connecting groove two which are vertically arranged, respectively, the loading assembly includes a connecting plate and two oppositely arranged loading arms. One loading arm is connected to the other loading arm through the connecting plate, and two loading slots are provided at intervals on the loading arm. When loading components are connected between the outer column 1 and the inner column 1, the two loading arms are respectively on the front and rear sides of the outer column 1, and the two loading slots are connected with the outer connecting slot 1 and the inner connecting slot 1, respectively. When the loading assembly is connected between the second outer column and the second inner column, the two loading arms are respectively on the front and rear sides of the second outer column, and the two loading grooves are respectively connected with the second outer connecting groove and the second inner connecting groove.
In order to further improve the scope of application of the present invention, a
lower horizontal beam and a supporting beam are provided between the inner column
1 and the inner column 2, and the lower horizontal beam is at the lower part of the
upper horizontal beam, the upper horizontal beam and the lower horizontal beam are
respectively provided with an upper horizontal connecting groove and a lower
horizontal connecting groove, and when a loading component is connected between
the upper horizontal beam and the lower horizontal beam, the two loading slots are
respectively connected with the upper horizontal connecting slot and the lower
horizontal connecting slot, the support beam is below the lower horizontal beam; the
loading arm between the two loading slots is arranged with a number of connecting
holes for connecting with the connecting plate; there are a number of mounting holes in the front and rear direction of the outer column 1, there are a number of mounting holes 2 in the front and rear direction of the outer column 2, the screw can pass through the loading groove, outer connecting groove one, inner connecting groove one, inner connecting groove two, outer connecting groove two, horizontal connecting groove one and horizontal connecting groove two; A number of mounting holes 3 are arranged on the side of the loading arm facing the loading assembly to facilitate connection with the loading test piece.
Example 1
As shown in Figure 5, in this embodiment, the loading assembly is provided with
two sets, and the two loading arms of each set of loading assembly are respectively
on the front and rear sides of the outer pillar one, the two loading slots of each group
of loading components are respectively connected to the outer connecting slot 1 and
the inner connecting slot 1, and the two loading arms of each group of loading
components are provided with a space for accommodating the loading test piece on
the side facing inward, the loading specimen includes an upper chord and a lower
chord. One end of the upper chord and one end of the lower chord are inserted into
the space. One end of the upper chord is connected to the two loading arms above,
and one end of the lower chord is connected to the two loading arms below, the other
end of the upper chord and the other end of the lower chord are integrated, and the
connecting plate is connected to the loading arm between the outer column 1 and the
inner column 1.
The method of using a self-balancing beam truss joint test device for testing includes the following steps:
(1) Install a set of loading components: the first screw passes through the outer
connecting groove 1, and the second screw passes through the inner connecting
groove 1. After adjusting the position of the screw, Use two fastening nuts to screw
on the first screw rod and fasten them on the front and back sides of the outer column
1 respectively. Use two fastening nuts to screw on the second screw rod and fasten
them to the front and back of the inner column 1. side, the two loading arms are
respectively supported on the front and rear of the first screw via the upper loading
slot, and the two loading arms are respectively supported on the front and rear of the
second screw via the lower loading slot;
(2) Install another set of loading components: the third screw passes through the
outer connecting groove 1, and the fourth screw passes through the inner connecting
groove 1. After adjusting the position of the screw, Use two fastening nuts to screw
on the third screw rod and fasten them to the front and back sides of the outer column
1, and use two fastening nuts to screw on the fourth screw rod and fasten them to the
front and back of the inner column 1, the two loading arms are respectively supported
at the front and rear of the third screw via the upper loading slot, and the two loading
arms are respectively supported at the front and rear of the fourth screw via the lower
loading slot, and the two loading arms are kept horizontal;
(3) The rolling bearing is fixedly installed on the upper side of the supporting
beam, the rolling bearing is connected with the loading test piece, the upper chord is
inserted into the space of a group of loading components, and the upper chord is connected with the corresponding two loading arms, the lower chord is inserted into the space of another set of loading components, the lower chord is connected to the corresponding two loading arms, the upper chord is parallel to the upper loading arm, and the lower chord remains horizontal;
(4) Install displacement meters along the axial direction on the side with the
upper chord facing upward and the side with the lower chord facing downward to
measure the deformation and displacement of the rod;
(5) Fix the angle adjustment pad on the outer column 1 between the two loading
arms above, and the angle adjustment pad faces the inner column 1 and the plane is
parallel to the direction of the upper chord axis;
(6) Install a jack on the upper connecting plate, the load of the jack acts on the
angle adjustment pad to achieve pressure on the upper chord, and install the jack on
the lower connecting plate. Make the load of the jack act on the inner column 1 to
realize the application of tensile force on the lower chord; Load the jack in stages
until the loading specimen is damaged.
Example 2
As shown in Fig. 6, the difference between this embodiment and Embodiment 1
is that the loading assembly is provided with two sets, and the two loading arms of
each set of loading assembly are respectively on the front and rear sides of the second
outer column, the two loading slots of each group of loading components are
respectively communicated with the outer connecting slot 2 and the inner connecting
slot 2.
The test method using this embodiment is similar to that of Embodiment 1, and
will not be repeated here.
Example 3
As shown in FIG. 7, the difference between this embodiment and Example 1 and
Example 2 is that the loading assembly is provided with three groups, and the two
loading arms of the first group of loading assembly are respectively on the front and
back sides of the outer pillar one, the two loading slots of each loading arm of the
first group of loading components are respectively connected to the outer connecting
slot 1 and the inner connecting slot 1, and the two loading arms of the second group
of loading components are respectively on the front and back sides of the upper
horizontal beam, the two loading slots of each loading arm in the second group of
loading components are connected to the upper horizontal connecting groove and the
lower horizontal connecting groove respectively, the two loading arms of the third
group of loading components are respectively on the front and rear sides of the outer
column 2, the two loading slots of each loading arm in the third group of loading
components are respectively connected with the outer connecting slot 2 and the inner
connecting slot 2, and the two loading arms of each group of loading components
have some space for accommodating the loading test piece on the side facing inward.
The loading test piece includes a left chord, a vertical rod and a right chord. One end
of the left chord is inserted into the space of the first group of loading components,
and one end of the vertical rod is inserted into the space of the second group of loading
components. One end of the right chord is inserted into the space of the third group
of loading components, one end of the left chord is connected to the two loading arms of the first group of loading components, and one end of the vertical rod is connected to the two loading arms of the second group of loading components connection. One end of the right chord is connected with the two loading arms of the third group of loading components, and the other end of the left chord, the other end of the vertical rod and the other end of the lower chord are integrated.
When using this embodiment for testing, the difference from embodiment 1 is
that the vertical rod, the left chord and the right chord are equipped with displacement
meters in the axial direction to measure the deformation and displacement of each
rod.
The roof node simulated by the loading test piece in this embodiment is installed
upside down by rotating the manufactured roof node 1800 around the center point,
and keeping the vertical web rod of the node installed vertically. Connect the left
chord and right chord on both sides to the test device and fix it. Since the ridge node
is symmetrically stressed and the node itself can achieve balance, the roof node test
does not install rolling bearings, the left chord and the right chord on both sides of
the ridge node are all compression members, the installation method of the jack refers
to the installation method in Example 1, the web members at the ridge node are tension
members, the bottom of the jack is installed on the connecting plate between the upper
horizontal beam and the lower horizontal beam, and the load of the jack acts on the
lower horizontal beam.
In the integral truss test, the load is concentrated on the truss nodes, and the truss
generates axial internal force of the truss memebers due to the concentrated force. In this test, since the truss nodes have been separated from the integral truss, which can not form a complete component that can bear the load, so this test adopts the loading plan of adding load to each member of the node to achieve the purpose of correctly reflecting the real stress situation of the node. During the test, pressure sensors are installed on the jacks, all pressure sensors are connected with strain gauges, the load is applied synchronously with the hydraulic jack, and the load is controlled by the pressure sensor, the entire loading process is divided into trial loading and hierarchical loading. During the loading process, the jacks should slowly and synchronously load, the sensor readings should be watched closely, and adjust the loading in time according to the readings to balance the force of the nodes.
(1) Trial loading
Each specimen was loaded once. First, the load is loaded to the second level load
in stages, and then the first level load is unloaded to no load. The purpose of this
paper is to check whether the joint is under normal stress and whether the test
equipment can work normally, and eliminate the influence of initial gap between
members by trial loading.
(2) Hierarchical loading to node destruction
Load hierarchically until the node is destroyed, the time interval for each level
of loading is 10 minutes, and continue loading after the reading is stable. If any of the
following situations occurs on the node, the node can be considered as broken:
a. Any member of the node loses its bearing capacity; b, The wood at the joint of the node splits or the pin groove is crushed; c, The joint tooth plate or bolt deforms obviously.
Example 4
As shown in Figure 8, the difference between this embodiment and Example 1
to 3 is that there are four sets of loading assemblies, and the two loading arms of the
first set of loading assemblies are respectively on the front and rear sides of the outer
pillar one, the two loading slots of each loading arm of the first group of loading
components are respectively connected to the outer connecting slot 1 and the inner
connecting slot 1, and the two loading arms of the second group of loading
components are respectively on the front and back sides of the upper horizontal beam,
the two loading slots of each loading arm of the second group of loading assemblies
are connected to the upper horizontal connecting slot and the lower horizontal
connecting slot respectively, the two loading arms of the third group of loading
assemblies are respectively on the front and rear sides of the upper horizontal beam,
the two loading slots of each loading arm of the third group of loading components
are connected to the upper horizontal connecting groove and the lower horizontal
connecting groove respectively, the two loading arms of the fourth group of loading
components are respectively on the front and back sides of the outer column 2, the
two loading slots of each loading arm in the fourth group of loading assemblies are
respectively connected with the outer connecting slot 2 and the inner connecting slot
2, and the two loading arms of each set of loading assembly have some space for
accommodating the loading test piece on the inwardly arranged side, the loading specimen includes the lower left chord, the upper left chord, the upper right chord and the lower right chord. One end of the lower left chord is inserted into the space of the first set of loading components, and one end of the upper left chord is inserted into the space of the second set of loading components. One end of the upper right chord is inserted into the space of the third group of loading components, one end of the lower right chord is inserted into the space of the fourth group of loading components, and one end of the left lower chord is connected to the two loading arms of the first group of loading components. One end of the upper left chord is connected with the two loading arms of the second group of loading components, and one end of the upper right chord is connected with the two loading arms of the third group of loading components. One end of the lower right chord is connected with the two loading arms of the third group of loading components, and the other end of the lower left chord, the other end of the upper left chord, the other end of the upper right chord and the other end of the lower right chord are integrated, the first group of loading components, the second group of loading components, the third group of loading components, and the fourth group of loading components are sequentially arranged from the direction of the outer column 1 to the outer column 2.
The present invention is not limited to the above-mentioned embodiments. On the
basis of the technical solutions disclosed in the present invention, those skilled in the art,
according to the disclosed technical content, substitutions and modifications can be made
to some of the technical features without creative work, and these substitutions and
modifications shall be within the protection scope of the present invention.
Claims (9)
1. A self-balancing beam truss joint test device, characterized in that it includes at least two
sets of loading components, an outer column 1 and an outer column 2, and an upper horizontal
beam is arranged between the outer column 1 and the outer column 2, the lower side of the upper
horizontal beam between the outer column 1 and the outer column 2 is provided with an inner
column 1 and an inner column 2 spaced in the left and right upwards, the outer column 1, the inner
column 1, the inner column 2 and the outer column 1 are respectively provided with an outer
connecting groove one, an inner connecting groove one, an inner connecting groove two and an
outer connecting groove two which are arranged vertically, respectively, the loading assembly
includes a connecting plate and two opposite loading arms, one loading arm is connected to the
other loading arm through the connecting plate, and two loading slots are opened at intervals on
the loading arm. When loading components are connected between the outer column 1 and the
inner column 1, the two loading arms are respectively on the front and rear sides of the outer
column 1, and the two loading slots are connected with the outer connecting slot 1 and the inner
connecting slot 1, respectively. When the loading assembly is connected between the second outer
column and the second inner column, the two loading arms are respectively on the front and rear
sides of the second outer column, and the two loading grooves are respectively connected with
the second outer connecting groove and the second inner connecting groove.
2. A self-balancing beam truss joint test device according to claim 1, characterized in
that: a lower horizontal beam and a supporting beam are provided between the inner column
1 and the inner column 2. When the lower horizontal beam is at the lower part of the upper
horizontal beam, the upper horizontal beam and the lower horizontal beam are respectively
provided with an upper horizontal connection groove and a lower horizontal connection
groove, and a loading component is connected between the upper horizontal beam and the lower horizontal beam, the two loading grooves are respectively connected with the upper horizontal connecting groove and the lower horizontal connecting groove, and the supporting beam is below the lower horizontal beam.
3. A self-balance truss joint test device according to claim 2, characterized in that: the
loading arm between the two loading slots is arranged with a number of connecting holes
which are convenient to connect with the connecting plate; A number of mounting holes two
are opened in the front and rear direction of the second outer column.
4. A self-balance truss joint test device according to claim 3, characterized in that it
further comprises a screw that can pass through the loading slot.
5. A self-balance truss joint test device according to claim 4, characterized in that: the
loading component is provided with two groups, the two loading arms of each group of
loading components are respectively on the front and rear sides of the outer column 1, and
the two loading slots of each group of loading components are respectively connected with
the outer connecting groove 1 and the inner connecting groove 1, the two loading arms of
each group of loading components are provided with some space for accommodating a
loading test piece on the side facing inward, the loading test piece includes an upper chord
and a lower chord. One end of the upper chord and one end of the lower chord are inserted
into the space, One end of the upper chord is connected to the upper two loading arms, one
end of the lower chord is connected to the lower two loading arms, and the other end of the
upper chord and the other end of the lower chord are integrated, the connecting plate is
connected to the loading arm between the first outer column and the first inner column.
6. A self-balance truss joint test device according to claim 4, characterized in that: the
loading component is provided with two groups, the two loading arms of each group of
loading components are respectively on the front and rear sides of the outer column 2, and the two loading slots of each group of loading components are respectively connected with the outer connecting groove two and the inner connecting groove two.
7. A self-balance truss joint test device according to claim 4, characterized in that: the
loading component is provided with three groups, the two loading arms of the first group of
loading components are respectively on the front and rear sides of the outer column 1, and
the two loading slots of each loading arm in the first group of loading components are
respectively connected with the outer connecting slot 1 and the inner connecting slot 1, the
two loading arms of the second group of loading components are respectively on the front
and rear sides of the upper horizontal beam, and the two loading slots of each loading arm
of the second group of loading components are respectively connected with the upper
horizontal connecting groove and the lower horizontal connecting groove, the two loading
arms of the third group of loading components are respectively on the front and rear sides
of the outer column 2, and the two loading slots of each loading arm in the third group of
loading components are respectively connected with the outer connecting groove two and
the inner connecting groove two, the two loading arms of each set of loading components
have some space for accommodating loading test pieces on the side facing inward, the
loading test pieces include left chord, vertical rod and right chord. One end of the left chord
is inserted into the first set of loading components In the space, one end of the vertical rod
is inserted into the space of the second group of loading components, one end of the right
chord is inserted into the space of the third group of loading components, and one end of the
left chord is connected to the two loading arms of the first group of loading components.
One end of the vertical rod is connected to the two loading arms of the second group of
loading components, and one end of the right chord is connected to the two loading arms of
the third group of loading components, the other end of the left chord, the other end of the
vertical rod, and the other end of the lower chord are integrated.
8. A self-balance truss joint test device according to claim 4, characterized in that: the loading
assembly is provided with four groups, the two loading arms of the first group of loading
components are respectively on the front and rear sides of the outer column 1, and the two loading
slots of each loading arm in the first group of loading components are respectively connected with
the outer connecting slot 1 and the inner connecting slot 1, the two loading arms of the second
group of loading components are respectively on the front and rear sides of the upper horizontal
beam, and the two loading slots of each loading arm of the second group of loading components
are respectively connected with the upper horizontal connecting groove and the lower horizontal
connecting groove, the two loading arms of the third group of loading components are respectively
on the front and rear sides of the upper horizontal beam, and the two loading slots of each loading
arm of the third group of loading components are respectively connected with the upper horizontal
connecting groove and the lower horizontal connecting groove, the two loading arms of the fourth
group of loading components are respectively on the front and back sides of the outer column 2,
and the two loading slots of each loading arm in the fourth group of loading components are
respectively connected with the outer connecting groove two and the inner connecting groove two,
the two loading arms of each group of loading components have some space for accommodating
the loading test piece on the side facing inward, the loading test piece includes the lower left chord,
the upper left chord, the upper right chord and the lower right chord. Insert one end of the lower
left chord into the space of the first set of loading components, one end of the upper left chord
into the space of the second set of loading components, and one end of the upper right chord into
the space of the third set of loading components. One end of the lower right chord is inserted into
the space of the fourth group of loading components, one end of the lower left chord is connected
to the two loading arms of the first group of loading components, and one end of the left upper
chord is connected to the two loading arms of the second group of loading components connection.
One end of the upper right chord is connected with the two loading arms of the third group of loading components, and one end of the right lower chord is connected with the two loading arms of the third group of loading components, the other end of the lower left chord, the other end of the upper left chord, the other end of the upper right chord, and the other end of the lower right chord are integrated, the first group of loading components, the second group of loading components, the third group of loading components, and the fourth group of loading components are sequentially arranged from the direction of the outer column 1 to the outer column 2.
9. A method for testing using a self-balance truss joint test device according to any one
of claims I to 5, characterized in that:
(1) Install a set of loading components: the first screw passes through the outer
connecting groove 1, and the second screw passes through the inner connecting groove 1.
After adjusting the position of the screw, using two fastening nuts to screw on the first screw
rod and fasten them on the front and back sides of the outer column 1 respectively. Use two
fastening nuts to screw on the second screw rod and fasten them to the front and back of the
inner column 1, the two loading arms are respectively supported on the front and rear of the
first screw via the upper loading slot, and the two loading arms are respectively supported
on the front and rear of the second screw via the lower loading slot;
(2) Install another set of loading components: the third screw passes through the outer
connecting groove 1, and the fourth screw passes through the inner connecting groove 1.
After adjusting the position of the screw, use two fastening nuts to screw on the third screw
rod and fasten them to the front and back sides of the outer column 1, and use two fastening
nuts to screw on the fourth screw rod and fasten them to the front and back of the inner
column 1, the two loading arms are respectively supported at the front and rear of the third
screw via the upper loading slot, and the two loading arms are respectively supported at the
front and rear of the fourth screw via the lower loading slot, and the two loading arms are kept horizontal;
(3) The rolling bearing is fixedly installed on the upper side of the supporting beam,
the rolling bearing is connected with the loading test piece, the upper chord is inserted into
the space of a group of loading components, and the upper chord is connected with the
corresponding two loading arms, the lower chord is inserted into the space of another set of
loading components, the lower chord is connected to the corresponding two loading arms,
the upper chord is parallel to the upper loading arm, and the lower chord remains horizontal;
(4) Install displacement meters along the axial direction on the side with the upper
chord facing upward and the side with the lower chord facing downward to measure the
deformation and displacement of the rod;
(5) Fix the angle adjustment pad on the outer column 1 between the two loading arms
above, and the angle adjustment pad faces the inner column 1 and the plane is parallel to the
direction of the upper chord axis;
(6) Install a jack on the upper connecting plate, the load of the jack acts on the angle
adjustment pad to achieve pressure on the upper chord, and install the jack on the lower
connecting plate. Make the load of the jack act on the inner column 1 to realize the
application of tensile force on the lower chord; Load the jack in stages until the loading
specimen is damaged.
-1/8-
Figure 1
-2/8-
Figure 2
-3/8-
Figure 3
-4/8-
Figure 4
-5/8-
Figure 5
-6/8-
Figure 6
-7/8-
Figure 7
-8/8-
Figure 8
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| Application Number | Priority Date | Filing Date | Title |
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| AU2020101725A AU2020101725A4 (en) | 2020-08-07 | 2020-08-07 | A self-balance truss joint test device and a test method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| AU2020101725A AU2020101725A4 (en) | 2020-08-07 | 2020-08-07 | A self-balance truss joint test device and a test method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577725A (en) * | 2020-12-07 | 2021-03-30 | 上海振华重工启东海洋工程股份有限公司 | Arm support containing type node fatigue resistance test method |
| NL2028879A (en) * | 2021-05-31 | 2021-09-28 | Univ Jilin Jianzhu | Multifunctional steel structure testing device for truss joint |
| CN117367744A (en) * | 2023-10-31 | 2024-01-09 | 南京航空航天大学 | Adjustable reloading device capable of being used for motion platform test |
-
2020
- 2020-08-07 AU AU2020101725A patent/AU2020101725A4/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577725A (en) * | 2020-12-07 | 2021-03-30 | 上海振华重工启东海洋工程股份有限公司 | Arm support containing type node fatigue resistance test method |
| NL2028879A (en) * | 2021-05-31 | 2021-09-28 | Univ Jilin Jianzhu | Multifunctional steel structure testing device for truss joint |
| CN117367744A (en) * | 2023-10-31 | 2024-01-09 | 南京航空航天大学 | Adjustable reloading device capable of being used for motion platform test |
| CN117367744B (en) * | 2023-10-31 | 2024-07-19 | 南京航空航天大学 | Adjustable reloading device capable of being used for motion platform test |
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