CN110512795A - A kind of fixing means and fixed device of flexural member - Google Patents
A kind of fixing means and fixed device of flexural member Download PDFInfo
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- CN110512795A CN110512795A CN201810492590.2A CN201810492590A CN110512795A CN 110512795 A CN110512795 A CN 110512795A CN 201810492590 A CN201810492590 A CN 201810492590A CN 110512795 A CN110512795 A CN 110512795A
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- load
- flexural member
- connection status
- default
- flexure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
Abstract
The invention discloses a kind of fixing means of flexural member and fixed device, this method includes the total load head for obtaining flexural member；The both ends connection status of flexural member is adjusted, so that the both ends of flexural member are in the first connection status, configures flexural member lower the first load to be born of connection status in the first stage；The both ends of flexural member are adjusted to the second connection status by the first connection status, configure flexural member the second load to be born under the second connection status；The fixation of flexural member is realized based on the first load and the second load.The embodiment of the present invention proposes a kind of new fixed form of flexural member, it may make that the both ends of flexural member and the positive hogging moment of span centre are effectively homogenized using this new fixed form, to improve flexural member stress performance in the structure and economy, direction is provided for the concept feasible of structure.
Description
Technical field
The present invention relates to technical field of civil engineering more particularly to the fixing means and fixed device of a kind of flexural member.
Background technique
Currently, in building specification and civil engineering structure theory, for flexural member (usual fingerboard, plate or retaining wall
Deng) both ends bearing state, generalling use following two mode is calculated, respectively hypothesis flexural member end be hinge
Branch and the end for assuming flexural member are clamped mode.In above two mode, flexural member bears whole load,
And the bearing state assumed once generates.
It based on this, is found in actual design and construction, is hinged using the both ends for assuming beam by taking single beam as an example
When mode, Liang Man is that parabolically shape is distributed (such as Fig. 1 institute across the bending moment diagram under the action of uniformly distributed vertical load q (q > 0)
Show), at this point, the both ends moment of flexure of beam is zero (i.e. moment of flexure at A, B two is zero), and span centre generates maximum moment Mc1=ql2/ 8,
Therefore, the moment of flexure width difference of the both ends of beam and span centre is maximum Δ1=ql2/8.And it uses and assumes that the both ends of beam are clamped side
When formula, Liang Man is across (as shown in Figure 2) that the bending moment diagram under uniformly distributed vertical load q effect is also that parabolically shape is distributed, still,
The both ends (i.e. in Fig. 2 at A, B two) of beam generate extreme value hogging moment M at this timeA=MB=-ql2/ 12, span centre generates small size sagging moment Mc2
=ql2/ 24, the moment of flexure width difference Δ of both ends hogging moment and positive moment of span central point2=ql2/24.Although this mode is compared to hypothesis beam
Both ends be hinged moment of flexure width difference Δ1=ql2/ 8 are reduced, but positive moment of span central point and both ends hogging moment also differ compared with
Greatly.
Although it follows that it is understood that, flexural member (such as beam) both ends calculated using traditional theory and span centre
There are this extremely uneven pessimums for positive hogging moment, but since current people are also constantly in inherency reason for this cognition
Solution, and the habitual mode received and applicability is applied, in the structure so as to cause flexural member in actual design and construction
Stress performance and economy are bad, possibly even occur erroneous judgement structure infeasible situation when serious.
Summary of the invention
The embodiment of the invention discloses a kind of fixing means of flexural member and fixed devices, can effectively be homogenized by curved structure
The both ends of part and the positive hogging moment of span centre, to improve flexural member stress performance in the structure and economy.
In a first aspect, the present invention provides a kind of fixing means of flexural member comprising
Obtain the total load head of flexural member；
The both ends connection status of the flexural member is adjusted, so that the both ends of the flexural member are in the first connection shape
State configures the flexural member the first load to be born under first connection status；Wherein, first load is
The fractional load of the total load head；
The both ends of the flexural member are adjusted to the second connection status by first connection status, configuration is described by curved
Component the second load to be born under second connection status；Wherein, second load is to remove in the total load head
Remove the remaining load of first load；
The fixation to the flexural member is realized based on first load and second load.
As an alternative embodiment, in the embodiment of first aspect present invention, first connection status is
Hinged or clamped, second connection status is clamped or hinged.
As an alternative embodiment, in the embodiment of first aspect present invention,
First load is vertical load and/or horizontal loading, and the configuration flexural member connects described first
Connect lower the first load to be born of state, comprising:
Calculate first load；
Apply first load on the flexural member, so that the flexural member is under first connection status
Bear first load.
As an alternative embodiment, in the embodiment of first aspect present invention,
Second load is vertical load and/or horizontal loading, and the configuration flexural member connects described second
Connect lower the second load to be born of state, comprising:
Calculate second load；
Apply second load on the flexural member, so that the flexural member is under second connection status
Bear second load.
Wherein, the flexural member can be beam or plate or retaining wall.The beam may include single beam, multispan beam, floor beam,
Wall beam, structural beams etc..
As an alternative embodiment, obtaining the flexural member in the embodiment of first aspect present invention
Total load head before, the method also includes
Obtain the default total load head of flexural member model；
The both ends connection status of the flexural member model is adjusted, so that the both ends of the flexural member model are in described
First connection status, and configure the first default lotus to be born under first connection status of the flexural member model
It carries；Wherein, the described first default load is the fractional load of the default total load head；
Of the flexural member model under the described first default load action is calculated according to the described first default load
One moment of flexure；
The both ends of the flexural member model are adjusted to second connection status by first connection status, and are matched
Set the flexural member model the second default load to be born under second connection status, wherein described second is pre-
If load is the remaining load that the default total load head removes the described first default load；
Of the flexural member model under the described second default load action is calculated according to the described second default load
Two moments of flexure；
First moment of flexure is superimposed with second moment of flexure, obtains target moment of flexure；Based on the target moment of flexure, institute is determined
State flexural member the first load to be born under first connection status；And it is based on the target moment of flexure, determine institute
State flexural member the second load to be born under second connection status.
Wherein, it should learn, the default total load head of the flexural member model should be with the total load head one of the flexural member
It causes, that is, the default total load head is equal to the total load head.
Second aspect, the present invention also provides a kind of fixed devices of flexural member, including
Acquiring unit, for obtaining the total load head of flexural member；
First processing units, for adjusting the both ends connection status of the flexural member, so that the two of the flexural member
End is in the first connection status, configures the flexural member the first load to be born under first connection status；Its
In, first load is the fractional load of the total load head；
The second processing unit, for the both ends of the flexural member to be adjusted to the second connection by first connection status
State configures the flexural member the second load to be born under second connection status；Wherein, second load
For the remaining load for removing first load in the total load head；And it is based on first load and second load
Realize the fixation to the flexural member.
As an alternative embodiment, in the embodiment of second aspect of the present invention, first connection status is
Hinged or clamped, second connection status is clamped or hinged.
As an alternative embodiment, in the embodiment of second aspect of the present invention,
First load is vertical load and/or horizontal loading, and the first processing units configure the flexural member
The mode for the first load to be born under first connection status specifically:
The first processing units calculate first load；
The first processing units apply first load on the flexural member, so that the flexural member is in institute
It states and bears first load under the first connection status.
As an alternative embodiment, in the embodiment of second aspect of the present invention,
Second load is vertical load and/or horizontal loading, and described the second processing unit configures the flexural member
The mode for the second load to be born under second connection status specifically:
Described the second processing unit calculates second load；
Described the second processing unit applies second load on the flexural member, so that the flexural member is in institute
It states and bears second load under the second connection status.
Wherein, the flexural member is beam or plate or retaining wall.
As an alternative embodiment, in the embodiment of second aspect of the present invention, the fixed dress of the flexural member
Setting further includes modeling unit, for obtaining flexural member before the total load head that the acquiring unit obtains the flexural member
The default total load head of model；And the both ends connection status of the flexural member model is adjusted, so that the flexural member model
Both ends be in first connection status, and configure the flexural member model to be born under first connection status
The first default load；Wherein, the described first default load is the fractional load of the default total load head；And according to described
First default load calculates first moment of flexure of the flexural member model under the described first default load action；And by institute
The both ends for stating flexural member model are adjusted to second connection status by first connection status, and configure described by curved structure
Part model the second default load to be born under second connection status, wherein the second default load is described
Default total load head removes the remaining load of the described first default load；And according to the described second default load calculate it is described by
Second moment of flexure of the curved component model under the described second default load action；And it is first moment of flexure and described second is curved
Square superposition, obtains target moment of flexure；And it is based on the target moment of flexure, determine the flexural member in first connection status
Lower the first load to be born, and, it is based on the target moment of flexure, determines the flexural member in second connection status
Lower the second load to be born.
Compared with traditional technology, the embodiment of the present invention is had the advantages that
In the present embodiment, the total load head of flexural member is first obtained, then connects shape by adjusting the both ends of flexural member
State, so that the both ends of flexural member are in the first connection status, configuration flexural member to be born under the first connection status
First load, then the both ends of flexural member are adjusted to the second connection status by the first connection status, configuration flexural member is the
Lower the second load to be born of two connection status.As can be seen that proposing flexural member both ends through the embodiment of the present invention
A kind of new fixing means, by the way that the stationary state at the both ends of flexural member is generated stage by stage, and the corresponding lotus born
It carries and is applied by the way of segmentation, so that it is effective equal to may make that the both ends of flexural member and the positive hogging moment of span centre obtain
Change, and then improve flexural member stress performance in the structure and economy, provides direction for the concept feasible of structure.
In addition, the fixing means and fixed device, the section of flexural member using flexural member of the invention compare overall process
Hinged or clamped overall process flexural member section is reduced, so as to make to seem to be unable to satisfy building aspect for space
The section height of limitation obtains good satisfaction.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the pin-ended of traditional flexural member (by taking single beam as an example) completely across curved under uniformly distributed vertical uniform load q
Square figure；
Fig. 2 is the two fixed ends of traditional flexural member (by taking single beam as an example) completely across curved under uniformly distributed vertical uniform load q
Square figure；
Fig. 3 is the flow chart of the fixing means for the flexural member that the embodiment of the present invention one provides；
Fig. 4 is the flow chart of the fixing means of flexural member provided by Embodiment 2 of the present invention；
Fig. 5 is that the pin-ended of flexural member provided by Embodiment 2 of the present invention (by taking single beam as an example) is made in part dead load
Bending moment diagram under；
Fig. 6 is the two fixed ends of flexural member provided by Embodiment 2 of the present invention (by taking single beam as an example) in remaining vertical lotus
Bending moment diagram under load effect；
Fig. 7 is the superimposed bending moment diagram of moment of flexure in Fig. 5 and Fig. 6；
Fig. 8 is a kind of structural schematic diagram of the fixation device for flexural member that the embodiment of the present invention three provides；
Fig. 9 is the structural schematic diagram of the fixation device for another flexural member that the embodiment of the present invention four provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
In the present invention, term " on ", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outside",
" in ", "vertical", "horizontal", " transverse direction ", the orientation or positional relationship of the instructions such as " longitudinal direction " be orientation based on the figure or
Positional relationship.These terms are not intended to limit indicated dress primarily to better describe the present invention and embodiment
Set, element or component must have particular orientation, or constructed and operated with particular orientation.
Also, above-mentioned part term is other than it can be used to indicate that orientation or positional relationship, it is also possible to for indicating it
His meaning, such as term " on " also are likely used for indicating certain relations of dependence or connection relationship in some cases.For ability
For the those of ordinary skill of domain, the concrete meaning of these terms in the present invention can be understood as the case may be.
In addition, term " installation ", " setting ", " being equipped with ", " connection ", " connected " shall be understood in a broad sense.For example, it may be solid
Fixed connection, is detachably connected or monolithic construction；It can be mechanical connection, or electrical connection；It can be directly connected, either
It indirectly connected through an intermediary, or is two connections internal between device, element or component.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In addition, term " first ", " second " etc. are mainly used for distinguishing different devices, element or component (specifically
Type and construction may it is identical may also be different), be not intended to show or implies meaning showing device, element or component
Relative importance and quantity.Unless otherwise indicated, the meaning of " multiple " is two or more.
Attached drawing is combined below to be described in detail.
Embodiment one
Referring to Fig. 3, Fig. 3 is the flow diagram of the fixing means of flexural member disclosed in the embodiment of the present invention one；Such as
Shown in Fig. 3, a kind of fixing means of flexural member can include:
101, the total load head of flexural member is obtained.
In the present embodiment, the flexural member be mainly fingerboard, plate, wall (such as retaining wall) bear moment of flexure component.Its
In, beam may include single beam, multispan beam, floor beam, wall beam, structural beams.In civil engineering theory, the total load head of flexural member
Can the formula according to specified in construction standards be calculated.Wherein, the total load head of flexural member mainly includes flexural member
Gravity load, vertical load and horizontal loading or other loads etc..Wherein, vertical load includes vertical dead load and vertically lives
The direction of load, vertical dead load and vertical live load is to determine downwards.Vertical dead load mainly includes but is not limited to floor
The dead load of any one or more superposition in self weight, floor overlapping layers, floor screed-coat, floor topping；Vertical live load
It mainly include but is not limited to floor live load, floor topping live load etc..Horizontal loading, direction may be often to change,
It mainly include the natural load such as wind load, earthquake load；Its direction is also possible to constant, such as soil pressure.
102, the both ends connection status of the flexural member is adjusted, so that the both ends of the flexural member are in the first connection
State configures the flexural member the first load to be born under first connection status；Wherein, first load
For the fractional load of the total load head.
In the present embodiment, which can be hinged, that is, can be rotated at this point, the both ends of flexural member are in
State.
As an alternative embodiment, first load can be flexural member gravity load, therefore, configuration by
It, can be by first calculating the gravity load of flexural member, then again when the first load that curved component is born under the first connection status
According to the gravity load of the flexural member, the value of first load is obtained.I.e. at this point, first load is equal to oneself of flexural member
Heavy load.That is, when the both ends of flexural member are located at the first connection status (that is, hinged), at this time not by curved structure
Apply any additional load on part, so that flexural member is only by the effect of its gravity load.
As another optional embodiment, which can be vertical load, including flexural member from heavy burden
It carries and other vertical loads.It therefore, can when configuring flexural member the first load to be born under the first connection status
The gravity load and other vertical loads (such as the dead loads such as floor self weight, floor topping) of the flexural member are first calculated, then
The case where further according to calculating, applies other vertical loads on flexural member.It is understood that in other embodiments
In, the first load can also may also include vertical load and horizontal loading for horizontal loading or first load.
103, the both ends of the flexural member are adjusted to the second connection status by first connection status, described in configuration
Flexural member the second load to be born under second connection status；Wherein, second load is the total load head
The middle remaining load for removing first load.
In the present embodiment, which can be clamped, i.e., at this point, the both ends of flexural member are in fixing shape
State.
As an alternative embodiment, second load may include that (vertical load may include levelling to vertical load
Layer, floor overlapping layers etc.), it therefore, can when configuring flexural member second load to be born under second connection status
By first calculating the vertical load, then further according to the value of the vertical load calculated, it is vertical to apply this on flexural member
Load.
As another optional embodiment, which may include vertical load and horizontal loading, then is configuring
Before flexural member the second load to be born under the second connection status, can first calculate flexural member born it is vertical
Then the numerical value of load and horizontal loading applies the vertical load and horizontal lotus further according to the value calculated on flexural member
It carries.
In the present embodiment, which is the sum of first load and second load, that is to say, that real using the present invention
The scheme for applying example one is the total load head for bearing flexural member, is divided into two stages applications, and the first stage is the two of flexural member
The first load applied at the first connection status (i.e. hinged) is held, second stage is that the both ends of flexural member connect shape first
The second load applied when the second connection status (i.e. clamped) is adjusted on the basis of state.In this way, instead of tradition
Civil engineering theory in assume flexural member is born when the pin-ended of flexural member load all modes for once applying,
And it is whole instead of the load for assuming that flexural member is born when the two fixed ends of flexural member in traditional civil engineering theory
The mode once applied, this new paragon advantageously reduces both ends and the width of the positive hogging moment of span centre is poor, thus be conducive to improve by
The safety in the structure of curved component and stress performance.
104, the fixation to the flexural member is realized based on first load and second load.
Specifically, in actual design construction, the first load of above-mentioned calculating and the can be passed through to the fixation of flexural member
Two loads are realized, for example, can first configure the first lotus on flexural member when the both ends of flexural member are located at hinged state
It carries, then when the both ends of flexural member are in clamped state, then configures the second load on flexural member.By this by lotus
The mode that segmented applies is carried, the moment of flexure that may make flexural member to be born when fixed is more homogenized.
Further, which can be beam, plate or retaining wall etc..When flexural member is beam, flexural member can be
Single beam, continuous beam on many supports, floor beam, wall beam, structural beams etc..
As an alternative embodiment, above-mentioned flexural member can be single beam.When above-mentioned flexural member is single
When bridge, the total load head that flexural member is born can be vertical load, which includes vertical dead load and vertical live load,
First load can be the vertical dead load in part, which includes the vertical dead load of another part and vertical live load.
That is, when above-mentioned flexural member is single beam, it is only necessary to its vertical uniform load q being subject to is considered, at this point, by curved structure
When the both ends of part are the first connection status, which is vertical dead load, not only may include flexural member from heavy burden
It carries, may also include the vertical dead loads such as floor self weight, floor overlapping layers.And the second load include the vertical dead load of another part and
Vertical live load, that is, the second load may include floor screed-coat, floor topping, floor live load and floor topping live load etc..
As another optional embodiment, above-mentioned flexural member can also be wall beam, structural beams.When above-mentioned by curved
When component is structural beams, the total load head of flexural member includes vertical load and horizontal loading, which includes vertical permanent lotus
Load and vertical live load.Wherein, the first load can be the first vertical dead load, which is the vertical permanent lotus in part
It carries, the second load may include the second vertical dead load, vertical live load and horizontal loading, which is that this is vertical
Dead load removes the remaining dead load after the first vertical dead load.Connect that is, being located at first at the both ends of flexural member
When connecing state, the first load that flexural member is born is the first vertical dead load, which may include by curved
Gravity load, floor self weight, floor overlapping layers of component etc..Second is adjusted to by the first connection status at the both ends of flexural member
When connection status, the second load that flexural member is born includes the second vertical dead load, vertical live load and horizontal loading, is somebody's turn to do
Second vertical dead load may include floor screed-coat, floor topping etc., which may include floor live load and floor
Surface layer live load, the horizontal loading may include wind load, earthquake load and soil pressure etc..
It should learn, the fixing means of flexural member of the invention may be not only suitable for new construction, also applicable
In existing engineering.
The fixing means for the flexural member that the embodiment of the present invention one provides mainly breaks consolidating for traditional civil engineering theory
Have thinking set, by the way that artificially initiatively the support state of flexural member is generated stage by stage, at the same time its bear load
Also accordingly apply stage by stage, effectively reduce the both ends of flexural member and the width of the positive hogging moment of span centre is poor, Jin Eryou to can realize
Conducive to flexural member stress performance in the structure and economy is improved, for the organization plan feasibility side of providing of flexural member
To.
Embodiment two
Referring to Fig. 4, Fig. 4 is the flow chart of the fixing means of flexural member disclosed in the embodiment of the present invention two；Such as Fig. 4 institute
Show, a kind of fixing means of flexural member can include:
201, the default total load head of flexural member model is obtained.
In the present embodiment, it when obtaining the default total load head of flexural member model, can be realized by way of modeling.Example
Such as, can according to the structural parameters of flexural member model (structural parameters mainly may include flexural member model width, highly with
And the parameters such as span) and civil engineering specification specified in formula the default total load head of flexural member model is calculated.Its
In, the default total load head of flexural member model mainly includes the gravity load, vertical load and horizontal loading of flexural member model
Deng.Wherein, vertical load includes vertical dead load and vertical live load, and the direction of vertical dead load and vertical live load is true
Under orientation.Vertical dead load mainly includes floor self weight, any one in floor overlapping layers, floor screed-coat, floor topping
Kind or the dead load of a variety of superpositions；Vertical live load mainly includes floor live load, floor topping live load etc..Horizontal loading
Direction often changes, and mainly includes the natural load such as wind load, earthquake load, the horizontal loading for also having direction constant,
Such as soil pressure.
202, the both ends connection status for adjusting the flexural member model, so that the both ends of the flexural member model are in
First connection status, and it is default to configure the flexural member model to be born under first connection status first
Load；Wherein, the described first default load is the fractional load of the default total load head.
In the present embodiment, which can be hinged, that is, the both ends of flexural member model are in rotary shape
State, at this point, being reconfigured flexural member model the first default load to be born under the first connection status.It is understood that
It is that in other embodiments, which can also be clamped.
As an alternative embodiment, the first default load can be the gravity load of flexural member model.Therefore,
It, can be by first calculating by curved structure when configuring flexural member model the first default load to be born under the first connection status
The gravity load of part model obtains the value of the first default load then further according to the gravity load of the flexural member model.This
When, which is equal to the gravity load of flexural member model.That is, being located at the both ends of flexural member model
When the first connection status (i.e. hinged), do not apply any additional load on flexural member model at this time, so that by curved structure
Part model is only by the effect of its gravity load.
As another optional embodiment, which can be vertical load, including flexural member model
Gravity load and other vertical loads.Therefore, it to be born under the first connection status in configuration flexural member model
When the first default load, gravity load and other vertical loads (such as the floor self weight, building of flexural member model can be first calculated
The loads such as board finish), then further according to other vertical loads calculated, applying this on flexural member model, other are vertical
Load.
203, the flexural member model is calculated under the described first default load action according to the described first default load
The first moment of flexure.
In civil engineering theory, the relationship of first moment of flexure and the first default load can be according to related professional book and work
The formula recorded in journey reckoner is computed or looked up to obtain.
204, the both ends of the flexural member model are adjusted to second connection status by first connection status,
And configure the flexural member model the second default load to be born under second connection status, wherein described
Two default loads are the remaining load that the default total load head removes the described first default load.
In the present embodiment, which can be clamped, that is to say, that at this point, the both ends of flexural member model
Connection status can be enhanced to clamped state by hinged.
As an alternative embodiment, the second default load may include that (vertical load may include vertical load
Screed-coat, floor overlapping layers etc.), therefore, to be born under second connection status in configuration flexural member model second
It, can be by first calculating the vertical load, then further according to the value of the vertical load calculated, in flexural member when default load
Apply the vertical load on model.
As another optional embodiment, which may include vertical load and horizontal loading, then exists
Configuration flexural member model is in front of lower the second load to be born of the second connection status, can first calculate flexural member mould
Then the numerical value of vertical load and horizontal loading that type is born is applied on flexural member model further according to the result calculated
Add the vertical load and horizontal loading.
205, the flexural member model is calculated under the described second default load action according to the described second default load
The second moment of flexure.
In civil engineering theory, the relationship of second moment of flexure and the second default load can be according to civil engineering books
Or the formula recorded in engineering calculation handbook is computed or looked up to obtain.
206, first moment of flexure is superimposed with second moment of flexure, obtains target moment of flexure, be based on the target moment of flexure, really
The fixed flexural member the first load to be born under first connection status, and it is based on the target moment of flexure, really
The fixed flexural member the second load to be born under second connection status.
Wherein, it should learn, determine that first load and the second load refer to based on the target moment of flexure: being based on target
The corresponding relationship of the first moment of flexure and the first connection status and load in moment of flexure, determines flexural member under the first connection status
The first load to be born；And it is closed based on the second moment of flexure in target moment of flexure with the second connection status and the corresponding of load
System, determines flexural member the second load to be born under the second connection status.
Wherein, it should learn, which is the moment of flexure after being homogenized, that is to say, that using of the invention
The moment of flexure that scheme obtains is to tend to the moment of flexure of homogenization, steps out existing moment of flexure unevenness entirely this greatly reduces flexural member and shows
As the structure design for being conducive to the flexural member is more reasonable.
Specifically, please also refer to Fig. 5 to Fig. 7, be described in detail below with reference to diagram the target moment of flexure derivation and
The process of argumentation.
It derives below and the process of argumentation is to bear to expire across uniformly erecting using single beam (that is, the flexural member model is as single beam)
To being described as follows in case where load:
Firstly, the both ends of default flexural member model are located at the first connection status, (i.e. flexural member model both ends are hinged
State), on flexural member model apply the first default load q1(at this point, the first default load is vertical dead load, and
First default load q1> 0), at this point, according to the first default load q1First moment of flexure is calculated, flexural member model is obtained
Maximum bending moment caused by span centre isThat is, first moment of flexure is(as shown in Figure 5).With biography
It is used in system technology and assumes that the whole load that the both ends of flexural member are hinged and flexural member both ends are born generates to be primary
Mode (as shown in Figure 1) difference be, the first moment of flexure in the present embodimentCompared to traditional technology by curved
The mid span moment M of componentc1=ql2/ 8 are reduced.
Secondly, the both ends of flexural member model are adjusted to the second connection status (that is, clamped) by the first connection status, this
When, the both ends of flexural member model are in clamped state, apply the second default load q on flexural member model2(q2=q-
q1), wherein q is the total load head of flexural member model, and the second default load q2> 0.At this point, as shown in fig. 6, what span centre generated
Moment isFlexural member model both ends generate extreme value hogging moment value be
The moment that span centre is generatedThe extreme value hogging moment value generated with flexural member model both endsAmplitude subtract each other and take absolute value, obtain the second moment of flexure width difference q2l2/24.Due to q2=q-q1, therefore
It is found that the second moment of flexure width difference is compared to the moment of flexure for using flexural member two fixed ends once to generate whole load in traditional technology
Width difference Δ2=ql2/ 24 (as shown in Figure 2) are reduced.
Using the principle of stacking of structural theory, above-mentioned first moment of flexure and the second moment of flexure are overlapped, it is curved to obtain the target
Square (as shown in Figure 7) derives and the process of argumentation is as follows:
Wherein, mid span moment value is
The extreme value hogging moment value at both ends (i.e. in figure at A, B two) is
The moment of flexure amplitude that both above-mentioned formula (1) and formula (2) calculate is subtracted each other, both ends and the positive hogging moment of span centre are obtained
Width difference is
Δ=| q2l2/12-(q1/8+q2/24)l2|=| q2l2/24-q1l2/ 8 |=| q1l2/8-q2l2/24|；Formula (3)
Due to q, q1、q2, l be all larger than 0, and q1、q2Respectively less than q；
So certainly existing q1+q2=q makes following equation (4) while setting up, i.e.,
Δ=| q2l2/24-q1l2/8|<Δ2=ql2/ 24, Δ=| q1l2/8-q2l2/24|<Δ1=ql2/8.Formula (4)
This shows that there are q1+q2=q makes flexural member under the action of completely across uniformly distributed vertical load, using of the invention real
Apply the moment of flexure width difference that the scheme of example obtains be Δ=| q2l2/24-q1l2/ 8 |, compared to the hypothesis flexural member in traditional technology
Pin-ended analysis moment of flexure width difference Δ1=ql2/ 8, or assume the moment of flexure width difference Δ of the two fixed ends analysis of flexural member2
=ql2/ 24, all reduced, target moment of flexure tends to be homogenized.Therefore, be segmented by the way of the embodiment of the present invention realization by
The fixed method of curved component, the moment of flexure width that can effectively reduce both ends and span centre is poor, is tying to be conducive to raising flexural member
Stress performance in structure, and then be conducive to improve the safety of flexural member in the structure.
Further, using the moment of flexure Homogenization Mean of the embodiment of the present invention, it may be not only suitable for single beam, for multispan
It is equally applicable for beam, wall beam, structural beams, plate or retaining wall.
In addition, it should be understood that, the definition of the moment of flexure homogenizing in the present invention refers to: so that the Bending moment distribution of flexural member tends to
Homogenization, that is to say, that the target moment of flexure as tends to the moment of flexure of homogenization, or perhaps the moment of flexure being homogenized, and can also say it is curved
The lesser moment of flexure of square width difference.
In conclusion the moment of flexure Homogenization Mean of the flexural member using the embodiment of the present invention, firstly, can effectively reduce by curved
The both ends of component and the positive hogging moment width of span centre are poor.It is found through actual verification, by the way of of the invention, the control of flexural member is curved
Flexural member is hinged in moment ratio traditional technology or the clamped primary control moment for bearing whole load of flexural member reduce 10%~
40%.Secondly, by the way of of the invention, additionally it is possible to so that the material property of flexural member is given full play to, actually be tested
Card discovery, using the solution of the present invention, for entirely across girder steel for, can accordingly save steel 10%~40%.Again, using this
The mode of invention, the section of flexural member is than traditional technology using the clamped or hinged primary flexural member for bearing whole load
Section is reduced, and so as to further save material, mitigates self weight, and then is reduced geological process and reduced flexural member table
Area reduces the increased expense of the safeguard measures such as anti-corrosion fire prevention institute, further improves the deformation performance of flexural member comprehensively.
In addition, using the solution of the present invention, for the pure hinged primary flexural member for bearing whole load, can effectively reduce by
The mid-span deflection of curved component, to effectively improve the safety of the finish coat of flexural member.
Wherein, the fixing means of the flexural member in the present embodiment further includes step 207~210, and for step 207~
210 detailed description refers to the detailed description that step 101~104 are directed in embodiment one, and this embodiment is not repeated.
Embodiment three
Referring to Fig. 8, Fig. 8 is the structural schematic diagram of the fixation device for the flexural member that the embodiment of the present invention three provides.Such as
Shown in Fig. 8, the fixation device of the flexural member may include acquiring unit 310, first processing units 320 and the second processing unit
330:
Wherein, acquiring unit 310, for obtaining the total load head of flexural member；
Acquiring unit 310 also can trigger first processing units 320 and start after the total load head for obtaining flexural member.
First processing units 320, the connection status at the both ends for adjusting flexural member, so that at the both ends of flexural member
In the first connection status, flexural member the first load to be born under the first connection status is configured；Wherein, the first load is
The fractional load of total load head；
First processing units 320 also can trigger the second processing unit after obtaining the first load that flexural member is born
330 startings.
The second processing unit 330, for the both ends of flexural member to be adjusted to the second connection status by the first connection status,
Configure flexural member the second load to be born under the second connection status；Wherein, the second load is that the is removed in total load head
The remaining load of one load；And the fixation of flexural member is realized based on the first load and the second load.
In embodiments of the present invention, which can bear the component of moment of flexure for beam, plate or retaining wall etc..This is at first
Unit 310 is managed before obtaining the first load that flexural member is born, can first determine the first connection shape at the both ends of flexural member
State applying portion load or is not further applied load on flexural member when first connection status is hinged.
In the present embodiment, first load can for vertical load, horizontal loading either simultaneously include vertical load and
Horizontal loading.The first processing units 310 configure the flexural member the first load to be born under the first connection status
Mode specifically:
The first processing units 310 calculate first load.
The first processing units 310 apply first load on flexural member, so that flexural member connects shape first
First load is born under state.
As an implementation, which can be vertical load, and first load can be oneself of flexural member
Heavy load, when first load be flexural member gravity load when, then it is believed that do not apply on flexural member at this time in addition to
Other dead loads outside its gravity load.
As another optional embodiment, which may include that the gravity load of flexural member and others are erected
To load.At this point, calculate flexural member born the first load when, calculating be flexural member gravity load and other
Vertical load (such as the vertical loads such as floor self weight, floor topping), then the result calculated is applied to by curved again
On component.
In embodiments of the present invention, which, can before obtaining the second load that flexural member is born
First connection status at the both ends of flexural member is first adjusted, so that the both ends of flexural member are reinforced by the first connection status is (hinged)
When to the second connection status (clamped), then apply the remaining load removed outside the first load on flexural member.
Wherein, which configures the second lotus to be born under second connection status of flexural member
The mode of load specifically:
The second processing unit 320 calculates second load；
The second processing unit 320 applies second load on flexural member, so that flexural member is in second connection
Second load is born under state.
As an alternative embodiment, second load can be vertical load.When second load is vertical load
When, then it is believed that being applied with vertical load on flexural member at this time, the vertical load on flexural member can be first calculated, then again
According to calculating as a result, being applied on flexural member.
As another optional embodiment, which may include vertical load and horizontal loading.That is,
At this point, second computing unit 320 should calculate the vertical load and the horizontal loading, then exist further according to the result calculated
It is corresponding on flexural member to apply.
In embodiments of the present invention, when the flexural member is beam, which can be single beam, multispan beam or structure
Beam.
When flexural member is single beam, the total load head that flexural member is born is vertical load, which includes perpendicular
To dead load and vertical live load, which can be the vertical dead load in part, which includes that another part is vertical
Dead load and the vertical live load.That is, when above-mentioned flexural member is single beam, it is only necessary to consider that it is subject to perpendicular
To load action, at this point, first load is vertical dead load, not only when the both ends of flexural member are the first connection status
It may include the gravity load of flexural member, may also include floor self weight, floor overlapping layers etc..And the second load includes another part
Vertical dead load and vertical live load, that is, the second load may include floor screed-coat, floor topping, floor live load and floor
Surface layer live load etc..
When flexural member is structural beams, the total load head of flexural member includes vertical load and horizontal loading, the vertical lotus
Carry includes vertical dead load and vertical live load.Wherein, the first load is the first vertical dead load, and the second load includes second perpendicular
To dead load, vertical live load and horizontal loading, and the vertical dead load is the first vertical dead load and the second vertical permanent lotus
The sum of carry.That is, when the both ends of flexural member are located at the first connection status, the first load that flexural member is born is
First vertical dead load, the first vertical dead load may include the gravity load of flexural member, floor self weight, floor overlapping layers
Deng.When the both ends of flexural member are adjusted to the second connection status by the first connection status, the second lotus that flexural member is born
Carrying includes the second vertical dead load, vertical live load and horizontal loading, which may include floor screed-coat, building
Board finish etc., the vertical live load may include floor live load and floor topping live load etc., which may include wind lotus
Load, earthquake load and soil pressure etc..
Example IV
Referring to Fig. 9, Fig. 9 is the structural representation of the fixed device of another kind flexural member disclosed in the embodiment of the present invention four
Figure.The fixation device of flexural member shown in Fig. 9 be flexural member shown in Fig. 8 fixation device on the basis of optimize
It arrives.As shown in figure 9, the fixation device of the flexural member may also include that
Modeling unit 410, for obtaining flexural member model before the total load head that acquiring unit obtains flexural member
Default total load head；And the connection status at the both ends of adjustment flexural member model, so that the both ends of flexural member model are in the
One connection status, and configure the flexural member model the first default load to be born under the first connection status, wherein it should
First default load is the fractional load of the default total load head；And flexural member model is calculated according to the first default load
The first moment of flexure under the first default load action；And the both ends of flexural member model are adjusted to by the first connection status
Second connection status, and configure the flexural member model to be born under the second connection status second default load, wherein it should
Second default load is the remaining load that the default total load head removes the first default load；And according to the second default load
Calculate second moment of flexure of the flexural member model under the second default load action；And be superimposed the first moment of flexure with the second moment of flexure,
Obtain target moment of flexure.And it is based on the target moment of flexure, determine the first lotus to be born under the first connection status of flexural member
It carries, and is based on the target moment of flexure, determine flexural member the second load to be born under the second connection status.
Wherein, which should be consistent with the total load head of the flexural member, that is, the default total load head is equal to total lotus
It carries.
Wherein, it should learn, determine that first load and the second load refer to based on the target moment of flexure: being based on target
The corresponding relationship of the first moment of flexure and the first connection status and load in moment of flexure, determines flexural member under the first connection status
The first load to be born；And it is closed based on the second moment of flexure in target moment of flexure with the second connection status and the corresponding of load
System, determines flexural member the second load to be born under the second connection status.
Specifically, which can trigger acquiring unit 310 and starts after having executed above-mentioned steps.
Optionally, which can be the gravity load of flexural member model.It is understood that this is first pre-
If load may also include gravity load and other vertical loads (such as the floor self weight, floor topping of flexural member model
Deng).
Optionally, which can be vertical load.It is understood that the second default load may also include
Vertical load and horizontal loading.
In the present embodiment, which can bear the component of moment of flexure for beam, plate or retaining wall etc..The target is curved
Square is the moment of flexure after homogenizing, that is to say, that in the fixation device of flexural member of the invention, in the moment of flexure for obtaining the flexural member
When, moment of flexure tends to homogenization distribution, so that the positive hogging moment width difference for solving the flexural member in traditional theory is larger
The problem of, improve the structural reliability of flexural member.
It specifically, is to be described in detail in case where single beam bears to expire across uniformly distributed vertical load by the flexural member model
The derivation and the process of argumentation of the target moment of flexure.
Firstly, the both ends of default flexural member model are located at the first connection status (i.e. flexural member model pin-ended
State), apply the first default load q on flexural member model1(at this point, the first default load is vertical dead load, and the
One default load q1> 0), at this point, since the moment of flexure that the both ends of flexural member model are born is zero, first pre- according to this
If load q1First moment of flexure is calculated, obtaining Maximum bending moment caused by the span centre of flexural member model is
That is, first moment of flexure is(as shown in Figure 5).It is using the both ends of hypothesis flexural member with traditional technology
The whole load that hinged and flexural member is born is that mode (as shown in Figure 1) difference once generated is, in the present embodiment
First moment of flexureCompared to the mid span moment M of the flexural member of traditional technologyc1=ql2/ 8 are reduced.
Secondly, the both ends of flexural member model are adjusted to the second connection status (that is, clamped) by the first connection status, at this point,
The both ends of flexural member model are in clamped state, apply the second default load q on flexural member model2(q2=q-q1),
In, q is the total load head of flexural member model, and the second default load q2> 0.At this point, the second moment of flexure is as shown in fig. 6, span centre generates
Moment beFlexural member model both ends generate extreme value hogging moment value be
The moment that span centre is generatedThe extreme value hogging moment value generated with flexural member model both endsAmplitude subtract each other taking absolute value, obtain the second moment of flexure width difference q2l2/24.Due to q2=q-q1,
Thus, it can be known that the second moment of flexure width difference uses flexural member two fixed ends once to generate whole load compared in traditional technology
Moment of flexure width difference ql2/ 24 (as shown in Figure 2) are reduced.
Using the principle of stacking of structural theory, above-mentioned first moment of flexure and the second moment of flexure are overlapped, it is curved to obtain the target
Square (as shown in Figure 7) derives and the process of argumentation is as follows:
Wherein, mid span moment value is
The extreme value hogging moment value at both ends (i.e. in figure at A, B two) is
The moment of flexure amplitude that above-mentioned formula (1) is calculated with formula (2) is subtracted each other and is taken absolute value, the width difference for obtaining positive hogging moment is
Δ=| q2l2/12-(q1/8+q2/24)l2|=| q2l2/24-q1l2/ 8 |=| q1l2/8-q2l2/24|；Formula (3)
Due to q, q1、q2, l be all larger than 0, and q1、q2Respectively less than q；
So certainly existing q1+q2=q makes following equation (4) while setting up, i.e.,
Δ=| q2l2/24-q1l2/8|<Δ2=ql2/ 24, Δ=| q1l2/8-q2l2/24|<Δ1=ql2/8.Formula (4)
This shows that there are q1+q2=q makes flexural member under the action of completely across uniformly distributed vertical load, using of the invention real
Apply the moment of flexure width difference that the scheme of example obtains be Δ=| q2l2/24-q1l2/ 8 |, compared to the hypothesis flexural member in traditional technology
The moment of flexure width difference Δ of pin-ended analysis1=ql2/ 8, or assume the moment of flexure width difference Δ of flexural member two fixed ends analysis2=
ql2/ 24, all reduced, target moment of flexure tends to be homogenized.Therefore, flexural member is realized by the way of the embodiment of the present invention
Fixed method, the moment of flexure width that can effectively reduce both ends and span centre is poor, to be conducive to improve flexural member in the structure
Stress performance, and then be conducive to improve the safety of flexural member in the structure.
Further, using the moment of flexure Homogenization Mean of the embodiment of the present invention, it may be not only suitable for single beam, for multispan
It is equally applicable for beam, structural beams, plate or retaining wall.
The fixing means of flexural member provided in an embodiment of the present invention and fixed device, not only may make the two of flexural member
End and the positive hogging moment of span centre are effectively homogenized, and flexural member stress performance in the structure and economy are effectively improved,
Direction is provided for the organization plan feasibility of flexural member；Moreover, can be effectively reduced using the solution of the present invention by curved structure
The section of part to effectively save material, and then reduces construction cost.
The fixing means to a kind of flexural member disclosed by the embodiments of the present invention and fixed device have carried out detailed Jie above
It continues, used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only
It is to be used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to this hair
Bright thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not manage
Solution is limitation of the present invention.
Claims (10)
1. a kind of fixing means of flexural member, which is characterized in that including
Obtain the total load head of flexural member；
The connection status at the both ends of the flexural member is adjusted, so that the both ends of the flexural member are in the first connection status,
Configure the flexural member the first load to be born under first connection status；Wherein, first load is institute
State the fractional load of total load head；
The both ends of the flexural member are adjusted to the second connection status by first connection status, configure the flexural member
The second load to be born under second connection status；Wherein, second load is removes institute in the total load head
State the remaining load of the first load；
The fixation to the flexural member is realized based on first load and second load.
2. the fixing means of flexural member according to claim 1, which is characterized in that first connection status is hinged
Or it is clamped, second connection status is clamped or hinged.
3. the fixing means of flexural member according to claim 1 or 2, which is characterized in that first load is vertical
Load and/or horizontal loading, configuration flexural member first load to be born under first connection status,
Include:
Calculate first load；
Apply first load on the flexural member, so that the flexural member is born under first connection status
First load.
4. the fixing means of flexural member according to claim 3, which is characterized in that second load includes vertical lotus
It carries and/or horizontal loading, configuration flexural member second load to be born under second connection status wraps
It includes:
Calculate second load；
Apply second load on the flexural member, so that the flexural member is born under second connection status
Second load.
5. the fixing means of flexural member according to claim 1, which is characterized in that obtaining the total of the flexural member
Before load, the method also includes
Obtain the default total load head of flexural member model；
The both ends connection status of the flexural member model is adjusted, so that the both ends of the flexural member model are in described first
Connection status, and configure the flexural member model the first default load to be born under first connection status；Its
In, the first default load is the fractional load of the default total load head；
It is first curved under the described first default load action that the flexural member model is calculated according to the described first default load
Square；
The both ends of the flexural member model are adjusted to second connection status by first connection status, and configure institute
State flexural member model the second default load to be born under second connection status, wherein the second default lotus
Carry the remaining load that the described first default load is removed for the default total load head；
It is second curved under the described second default load action that the flexural member model is calculated according to the described second default load
Square；
First moment of flexure is superimposed with second moment of flexure, obtains target moment of flexure, is based on the target moment of flexure, determine it is described by
Curved component the first load to be born under first connection status；And be based on the target moment of flexure, determine it is described by
Curved component the second load to be born under second connection status.
6. a kind of fixation device of flexural member, which is characterized in that including
Acquiring unit, for obtaining the total load head of flexural member；
First processing units, the connection status at the both ends for adjusting the flexural member, so that the both ends of the flexural member
In the first connection status, and, configure the flexural member the first load to be born under first connection status；
Wherein, first load is the fractional load of the total load head；
The second processing unit, for the both ends of the flexural member to be adjusted to the second connection shape by first connection status
State, and, configure the flexural member the second load to be born under second connection status；Wherein, described second
Load is the remaining load that first load is removed in the total load head；And it is based on first load and described second
Load realizes the fixation to the flexural member.
7. the fixation device of flexural member according to claim 6, which is characterized in that first connection status is hinge
Branch, second connection status are clamped.
8. the fixation device of flexural member according to claim 6 or 7, which is characterized in that first load is vertical
Load and/or horizontal loading, the first processing units configure the flexural member in first connection according to target moment of flexure
The mode of lower the first load to be born of state specifically:
The first processing units calculate first load；
The first processing units apply first load on the flexural member, so that the flexural member is described
First load is born under one connection status.
9. the fixation device of flexural member according to claim 8, which is characterized in that second load is vertical load
And/or horizontal loading, described the second processing unit configure what the flexural member to be born under second connection status
The mode of second load specifically:
Described the second processing unit calculates second load；
Described the second processing unit applies second load on the flexural member, so that the flexural member is described
Second load is born under two connection status.
10. the fixation device of flexural member according to claim 6, which is characterized in that the fixed device of the flexural member
It further include modeling unit, for obtaining flexural member mould before the total load head that the acquiring unit obtains the flexural member
The default total load head of type；And the both ends connection status of the flexural member model is adjusted, so that the flexural member model
Both ends are in first connection status, and configure what the flexural member model to be born under first connection status
First default load；Wherein, the described first default load is the fractional load of the default total load head；And according to described
One default load calculates first moment of flexure of the flexural member model under the described first default load action；And it will be described
The both ends of flexural member model are adjusted to second connection status by first connection status, and configure the flexural member
Model the second default load to be born under second connection status, wherein the second default load is described pre-
If total load head removes the remaining load of the described first default load；And it is calculated according to the described second default load described by curved
Second moment of flexure of the component model under the described second default load action；And by first moment of flexure and second moment of flexure
Superposition, obtains target moment of flexure；And flexural member institute under first connection status is determined based on the target moment of flexure
The first load to be born, and, it is based on the target moment of flexure, determines flexural member institute under second connection status
The second load to be born.
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| CN103758044A (en) * | 2014-02-13 | 2014-04-30 | 腾达建设集团股份有限公司 | Arch rib closure method and arch rib closure control method based on unstressed state method |
| WO2016001668A1 (en) * | 2014-07-01 | 2016-01-07 | Flintstone Technology Limited | Sensing device |
| CN104891790A (en) * | 2015-04-13 | 2015-09-09 | 东南大学 | Symmetrical concentrated force and uniformly distributed load coupling bending forming device and application thereof |
| CN207228322U (en) * | 2017-03-31 | 2018-04-13 | 中民筑友建设有限公司 | A kind of combined member of assembling frame structure and wallboard |
| CN106894346A (en) * | 2017-04-28 | 2017-06-27 | 山西省交通科学研究院 | A kind of the continuous beam bridge construction method |
| CN207121993U (en) * | 2017-05-24 | 2018-03-20 | 河南广播电视大学 | The hinged joint that a kind of reinforced concrete frame structure bracing members are reinforced |
| CN107905109A (en) * | 2017-11-21 | 2018-04-13 | 重庆建工市政交通工程有限责任公司 | The loads such as the cast-in-place platform simulation of great-leap-forward bridge are segmented precompressed construction method |
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