CN107034781A - One kind enhancing antidetonation pier stud and its method of construction - Google Patents
One kind enhancing antidetonation pier stud and its method of construction Download PDFInfo
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- CN107034781A CN107034781A CN201710352883.6A CN201710352883A CN107034781A CN 107034781 A CN107034781 A CN 107034781A CN 201710352883 A CN201710352883 A CN 201710352883A CN 107034781 A CN107034781 A CN 107034781A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The present invention provides a kind of enhancing antidetonation pier stud and its method of construction.The enhancing antidetonation pier stud mainly includes pier stud basis, basic built-in fitting, Reinforced Concrete Pier Column, and enhancing steel plate.The method of construction includes：S1) construction pier stud basis, and basic built-in fitting is embedded in pier stud basis；S2) the construction reinforced bar performance of concrete column confined on the basis of pier stud；S3 the preset thickness and preset height of enhancing steel plate) are determined and enhancing steel plate is made；S4) enhancing Interal fixation is attached in the lower surface of Reinforced Concrete Pier Column and is fixedly connected with basic built-in fitting；And S5) the obtained components of curing step S4 to be to form enhancing antidetonation pier stud.Enhancing steel plate has preset thickness and preset height, to form plastic hinge simultaneously at the upper limb of the bottom of Reinforced Concrete Pier Column and enhancing steel plate.The anti-seismic performance of the enhancing antidetonation pier stud of the present invention is greatly improved, and simple in construction, easy to utilize, and can significantly reduce construction costs.
Description
Technical field
The present invention relates to Reinforced Concrete Pier Column field, and in particular to one kind enhancing antidetonation pier stud and its method of construction.
Background technology
Earthquake is that violent earthquake frequently occurs in a kind of huge natural calamity of destructive power, global range, the life to the people
Life property safety causes serious threat.In all previous violent earthquake, reinforced concrete structure receives serious damaged destruction, its
The damage of middle pier stud is a kind of main seismic Damage form.The antidetonation enhancing performance of performance of concrete column confined has also obtained concern and big
Quantifier elimination, obtained conclusion is basically identical：If Reinforced Concrete Pier Column has larger ductility and deformation behavior after enhancing,
Acted on using the power consumption of component non-ballistic sexual stage, structure can bear larger plastic deformation and will not destroy.
The performance of concrete column confined antidetonation enhancing technology proposed at present is mostly that its intensity and deformation are improved by confined concrete
Ability, without being rigidly connected between pier bottom reinforcing material and basis, plastic hinge will not increase after enhancing, and position does not also change,
The limited extent that its shock resistance is improved.
The content of the invention
In order to solve the problem of existing Reinforced Concrete Pier Column shock resistance is weaker there is provided one kind enhancing antidetonation pier stud and
Its method of construction, the shock resistance of the enhancing antidetonation pier stud is greatly improved, and simple in construction, easy to utilize, and can be significantly
Reduce construction costs.
Specifically, the present invention provides a kind of enhancing antidetonation pier stud, it includes pier stud basis；Basic built-in fitting, the basis
Built-in fitting is embedded in the pier stud basis；Reinforced Concrete Pier Column, the Reinforced Concrete Pier Column is cast in the pier stud base
On plinth；And enhancing steel plate, the enhancing Interal fixation be arranged on the Reinforced Concrete Pier Column lower surface on, and with institute
Basic built-in fitting is stated to be fixedly connected, and the enhancing steel plate has preset thickness and preset height, with the armored concrete
Plastic hinge is formed at the upper limb of the bottom of pier stud and the enhancing steel plate simultaneously.
It is preferred that, the enhancing steel plate is welded as a whole with the basic built-in fitting.
It is preferred that, the weld strength between the enhancing steel plate and the basic built-in fitting is more than the tensile strength of steel plate.
It is preferred that, the enhancing steel plate is fixedly mounted on the Reinforced Concrete Pier Column by structural adhesive and bolt
In lower surface.
It is preferred that, the basic built-in fitting is channel-section steel or I-steel.
Meanwhile, the present invention also provides the method for construction of the enhancing antidetonation pier stud, and it comprises the following steps：S1) construction pier stud
Basis, and basic built-in fitting is embedded in the pier stud basis；S2) the construction reinforced bar concrete pier on the basis of the pier stud
Post；S3 the thickness and height of enhancing steel plate) are determined and enhancing steel plate is made；S4) the enhancing Interal fixation is attached to described
In the lower surface of Reinforced Concrete Pier Column, and the enhancing steel plate is fixedly connected with the basic built-in fitting；And S5) support
The obtained components of shield step S4 are to form the enhancing antidetonation pier stud.The enhancing steel plate has preset thickness and preset height,
To form plastic hinge simultaneously at the upper limb of the bottom of the Reinforced Concrete Pier Column and the enhancing steel plate.
It is preferred that, the preset height and the preset thickness pass sequentially through following steps order and are determined：
Step 1：The thickness of the setting enhancing steel plate；
Step 2：The height of the setting enhancing steel plate；
Step 3：The bottom and the limit of the longitudinal reinforcement at enhancing steel plate upper limb for determining the Reinforced Concrete Pier Column are answered
Become；
Step 4：Whether judge at the bottom of the Reinforced Concrete Pier Column and enhancing steel plate upper limb while forming plasticity
Hinge；
If without formation plastic hinge simultaneously, the bottom of the enhancing antidetonation pier stud and the enhancing steel plate upper limb
The size of the limiting strain of the longitudinal reinforcement at place；If the limiting strain of the longitudinal reinforcement at the enhancing steel plate upper limb is larger,
Then increase the height of the enhancing steel plate, and step 2 is returned to the height of the enhancing steel plate after increase；If the enhancing
The limiting strain of the longitudinal reinforcement of the bottom of antidetonation pier stud is larger, then reduce it is described enhancing steel plate height, and with reduction after
The height of the enhancing steel plate returns to step 2.
If forming plastic hinge simultaneously, judge whether the height meets the requirements；If the height meets the requirements,
The thickness and the height are set as the preset height and the preset thickness；If the height is too high, reduce
The thickness of the enhancing steel plate, and step 1 is returned to the thickness of the enhancing steel plate after reduction；If the height is too low,
Then increase the thickness of the enhancing steel plate, and the thickness of the enhancing steel plate after increase returns to step 1；
The preset thickness and preset height of enhancing steel plate when it is determined that forming plastic hinge simultaneously.
It is preferred that, the longitudinal reinforcement at the bottom of the Reinforced Concrete Pier Column and the enhancing steel plate upper limb reaches simultaneously
To limiting strain, then judge at the bottom of the Reinforced Concrete Pier Column and enhancing steel plate upper limb while forming plastic hinge.
It is preferred that, when the 1/5~1/2 of the height that the height of the enhancing steel plate is the Reinforced Concrete Pier Column, sentence
The height of the disconnected enhancing steel plate meets the requirements.
It is preferred that, in the step S4, the enhancing steel plate is pasted by structural adhesive is arranged on the reinforced concrete
The surface of knoll post and by being fixed with bolt..
The enhancing antidetonation pier stud provided according to the present invention, can be on the pier bottom region of enhancing antidetonation pier stud and enhancing steel plate
Edge region forms plastic hinge simultaneously, and the shock resistance index such as Seismic Bearing Capacity, deformability and seismic energy dissipation ability of pier stud is big
Width is improved, and the enhancing antidetonation pier stud that provides of the present invention is simple in construction, and it is convenient to build, cost performance height.
Brief description of the drawings
Fig. 1 is the structural representation of the enhancing antidetonation pier stud of one embodiment of the invention；
Fig. 2 is the Section A-A schematic diagram in Fig. 1；
Fig. 3 is determination enhancing steel plate thickness and the flow chart of height in one embodiment of the invention；
Fig. 4 is the condition schematic diagram that Reinforced Concrete Pier Column forms double plastic hinges in pier stud bottom section；
Fig. 5 is pole of the Reinforced Concrete Pier Column under the conditions of different enhancing steel plate thickness in one embodiment of the invention
The lateral force curve figure of limit carrying；
Fig. 6 is pier of the Reinforced Concrete Pier Column under the conditions of different enhancing steel plate thickness in one embodiment of the invention
Push up extreme displacement curve map；
Fig. 7 is that the Reinforced Concrete Pier Column in one embodiment of the invention is anti-under the conditions of different enhancing steel plate thickness
Curved stiffness curve figure；
Fig. 8 is that the Reinforced Concrete Pier Column in one embodiment of the invention is stagnant under the conditions of different enhancing steel plate thickness
Return energy dissipation capacity curve map.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this
Invention, is not intended to limit the present invention.
Elaborated with reference to Fig. 1~Fig. 3 enhancing antidetonation pier studs provided the present invention.
The structural representation of enhancing antidetonation pier stud shown in reference picture 1, Fig. 2, the enhancing antidetonation pier stud bag that the present invention is provided
Include pier stud basis 1, basic built-in fitting 2, enhancing steel plate 3 and Reinforced Concrete Pier Column 5.
Wherein, basic built-in fitting 2 is embedded in pier stud basis 1, and basic 2 pairs of built-in fitting ensures the pier bottom of enhancing antidetonation pier stud
Strengthen steel plate 3 on section and the common stress of pier stud 5 is extremely important, typically can be channel-section steel, I-steel etc., channel-section steel and I-shaped ladle
Include web and the edge of a wing.It is understood that basic built-in fitting 2 should be reliably anchored in pier stud basis 1.
Enhancing steel plate 3 is fixedly mounted in the lower surface of Reinforced Concrete Pier Column 5, and fixes company with basic built-in fitting 2
Connect.In some embodiments of the invention, enhancing steel plate 3 is fixed together by way of welding with basic built-in fitting 2,
Steel plate 3 will be strengthened by weld seam to link together with basic built-in fitting 2.
It is understood that being fixedly installed to the bottom table of Reinforced Concrete Pier Column 5 for steel plate 3 will be strengthened in the present invention
Mode on face is not particularly limited, and can be used and is fixedly mounted on well known to a person skilled in the art mode by steel plate 3 is strengthened
In the lower surface of Reinforced Concrete Pier Column 5.
As shown in figure 1, in one embodiment of the invention, enhancing steel plate 3 by provided with construction bonds glue-line (in figure not
Show) and bolt 4 be fixedly mounted in the lower surface of Reinforced Concrete Pier Column 5, it is ensured that enhancing steel plate 3 and reinforced concrete knoll
Each section common stress of the post 5 in the range of enhancing.Operation principle for binding agent and bolt 4 is those skilled in the art
Known, this is not described in detail the present invention.
It is understood that the structure and construction of pier stud basis 1 and Reinforced Concrete Pier Column 5, the present invention is to this without spy
It is different to limit, can be the common form in this area.
Dotted line S1 is the geological process that pier stud is subject in Fig. 3, and dotted line S2 is the earthquake drag of enhancing antidetonation pier stud.It is general and
Speech, the geological process that pier stud is subject to increases from pier top to pier bottom, and pier bottom plastic hinge a regions (i.e. Fig. 1 dotted line frames a regions) by
It is higher in the effect bridge pier shock resistance of steel plate, in enhancing steel plate 3 upper limb plastic hinge b regions (i.e. Fig. 1 dotted line frames b regions) antidetonation
Ability is slightly lower, therefore the present invention strengthens the thickness and height of steel plate 3 come simultaneously at pier bottom and the upper limb of enhancing steel plate 3 by adjusting
Pier stud drag and geological process are balanced, the strain that reaches capacity simultaneously that makes two region longitudinal reinforcements, two plastic hinges of formation,
I.e. double plastic hinges.
Double plastic hinges can absorb more seismic energies, increase the deformability and earthquake seismic force of pier stud, Jin Erke
With the shock resistance for effectively reducing earthquake, improving performance of concrete column confined.The operation principle of plastic hinge is those skilled in the art institute
Known, this is not described in detail the present invention.
In some embodiments of the invention, the present invention also provide it is a kind of strengthen antidetonation pier stud method of construction, including with
Lower step：
S1) construction pier stud basis, and basic built-in fitting is embedded in the pier stud basis；
S2) the construction reinforced bar performance of concrete column confined on the basis of the pier stud；
S3 the thickness and height of enhancing steel plate) are determined and enhancing steel plate is made；
S4) the enhancing Interal fixation is attached in the lower surface of the Reinforced Concrete Pier Column, and increased described
Strong steel plate is fixedly connected with the basic built-in fitting；And
S5) component that curing step S4 is obtained with formed it is described enhancing antidetonation pier stud,
The enhancing steel plate has preset thickness and preset height, with the bottom of the Reinforced Concrete Pier Column and described
Strengthen and form plastic hinge simultaneously at the upper limb of steel plate.
Specifically, in some embodiments of the invention, pier stud basis 1 of constructing first, and the pre-buried base in pier stud basis 1
Plinth built-in fitting 2.The construction method of pier stud basis 1 and basic built-in fitting 2 can use construction method commonly used in the prior art,
The present invention is not particularly limited to this.
Basic built-in fitting 2 can be channel-section steel or I-steel, it is however generally that, in the basic channel-section steel of built-in fitting 2 or I-steel
The edge of a wing and the region that surrounds of web in can arrange many reinforcing steel bars 6, to ensure that basic built-in fitting 2 and pier stud basis 1 are reliable
Anchoring.It is understood that basic built-in fitting 2 is looped around around the bottom surface of Reinforced Concrete Pier Column 5, and basic built-in fitting 2
Top surface should keep level, so as to enhancing steel plate 3 be fixed together.
Then, the construction reinforced bar performance of concrete column confined 5 on pier stud basis 1, the construction method of Reinforced Concrete Pier Column 5 is ability
Well known to field technique personnel, here, the present invention is not described in detail.It is understood that in construction reinforced bar performance of concrete column confined
, it is necessary to reserve multigroup concrete prism test block and steel reinforcing bar specimen during pier stud 5, coagulation in accurate measurement Reinforced Concrete Pier Column 5
The mechanics parameter of soil and reinforcing bar.
It is understood that the present invention is mixed for pier stud basis 1, basic built-in fitting 2, bolt 4, construction bonds glue, reinforcing bar
Solidifying knoll post 5 and strengthen the material of steel plate 3 and be not particularly limited, can for concrete material commonly used in the art, steel and
Adhesive glue, can specifically be selected according to the situation of Reinforced Concrete Pier Column.
Then, enhancing steel plate 3 is determined according to the structure type of Reinforced Concrete Pier Column 5, size, arrangement of reinforcement, material property etc.
Preset thickness t and preset height h.It is that can be mixed in reinforcing bar to strengthen the preset thickness of steel plate 3 and the key of preset height determination
While plastic hinge, i.e., double plastic hinge structures at the bottom section and the enhancing upper limb of steel plate 3 of solidifying knoll post 5.What double plastic hinges judged
Standard can use the determination methods used in method known in those skilled in the art, some embodiments of the present invention to be steel
The longitudinal reinforcement of the bottom of reinforced concrete pier stud 5 and enhancing steel plate 3 the two positions of upper limb is while the strain that reaches capacity.Reinforced concrete
The limiting strain of the longitudinal reinforcement of the two positions can pass through this area skill at the bottom of knoll post 5 and the enhancing upper limb of steel plate 3
Method well known to art personnel is determined, for example, in some embodiments of the invention, can be entered using nonlinear fiber section
The seismic response time-histories of row Reinforced Concrete Pier Column 5 calculates or carried out pushover analyses to determine.Seismic response time-histories calculate or
Pushover analysis methods are known to those skilled in the art, and the present invention will not be repeated here.
In some embodiments of the invention, the preset thickness t and preset height h of enhancing steel plate 3 can pass through below scheme
Order is determined, and can refer to Fig. 4：
Step 1：The thickness of setting enhancing steel plate 3；
Step 2：The height of setting enhancing steel plate 3；
Step 3：Determine the bottom of Reinforced Concrete Pier Column 5 and strengthen the limiting strain of the longitudinal reinforcement at the upper limb of steel plate 3；
Time-histories is answered to calculate or pushover analyses determination pier bottom and longitudinal steel at enhancing steel plate upper limb for example, can be rung with base area
The limiting strain of muscle；
Step 4：Whether judge at the bottom of Reinforced Concrete Pier Column 5 and the enhancing upper limb of steel plate 3 while forming plastic hinge.
The strain if longitudinal reinforcement at the bottom of Reinforced Concrete Pier Column 5 and the enhancing upper limb of steel plate 3 reaches capacity simultaneously,
Then it can determine that at the bottom of Reinforced Concrete Pier Column and enhancing steel plate upper limb while forming plastic hinge；If not forming double modelings
Property hinge, then compare enhancing steel plate upper limb at reinforcing bar strain and pier bottom longitudinal reinforcement strain size.
If strengthen steel plate upper limb longitudinal reinforcement strain it is larger, it is necessary to increase enhancing steel plate height h, be then return to step
Rapid 2, if longitudinal reinforcement strain in pier bottom is larger, need to reduce enhancing steel plate height h；It is then return to step 2.
If forming double plastic hinges simultaneously, judge whether the height for strengthening steel plate meets the requirements.In some of the present invention
In embodiment, the height of enhancing steel plate meets the requirements when being in the range of the 1/5~1/2 of Reinforced Concrete Pier Column height.
If the height for strengthening steel plate is undesirable, if i.e. height h is too high, reduce the thickness t of enhancing steel plate, so
After return to step 1,；If height h is too low, the thickness t of increase enhancing steel plate is then return to step 1).
Until it is determined that the reasonably thickness and height of enhancing steel plate, and then effectively in the bottom of Reinforced Concrete Pier Column and increasing
Double plastic hinge enhanced schemes are formed at the upper limb of strong steel plate.
And then conserved in Reinforced Concrete Pier Column 5 to the 85% of design strength, the enhancing steel plate 3 made can be fixed
It is attached on the bottom section surface of pier stud 5.It is understood that the maintenance for reinforced concrete member can use ability
Scheme well known to field technique personnel is carried out, and the present invention is not particularly limited to this.It is understood that for inciting somebody to action in the present invention
The mode that enhancing steel plate 3 is affixed in the lower surface of pier stud 5 is not particularly limited, and can be used as well known to those skilled in the art
Technology.
For example, as shown in figure 1, in one embodiment of the invention, enhancing steel plate 3 is attached to steel by the way that construction bonds are gluing
The surface of reinforced concrete pier stud 5, is then pressurizeed by bolt 4 and fixed.The flow of conventional affixing steel plate is as follows：
1) drilled in the position of the predetermined bolt 4 in surface of Reinforced Concrete Pier Column 5, borehole cleaning simultaneously inserts spiral shell using chemical bonding
Bolt 4, it is to be understood that the spacing of bolt is preferably slightly close；
2) strengthening the surface of dabbing Reinforced Concrete Pier Column 5 in the range of steel plate 3, exposing solid bed, use pressure-air
The floating dust on surface is cleaned with acetone；The prefabricated inner surface of enhancing steel plate 3 of polishing, until exposing metal quality.It may be appreciated
It is that roughness is preferably big during polishing, polishing lines is as far as possible vertical with steel plate Impact direction, cleans surface of steel plate with acetone afterwards；
3) smearing structure adhesive glue, adhesive glue in the range of the enhancing of Reinforced Concrete Pier Column 5 and on the enhancing adhesive surface of steel plate 3
Thickness control is in 1~3mm, and thick middle thin edge；
4) paste in enhancing steel plate 3 to the lower surface of Reinforced Concrete Pier Column 5, with bolt 4 and other pressurization equipment pair
Enhancing steel plate 3 pressurizes.Pressurization is the important step for ensureing Bonding quality of the interface between grain and liner.Then the vertical side that welding enhancing steel plate 3 is open
While making one entirety of formation of enhancing steel plate 3.
Next in adhesive structure glue, also solidification is not preceding enhancing steel plate 3 and the basic built-in fitting 2 in pier stud basis 1 completely
Welding.Bonding interface is uncured can be discharged due to welding the interfacial stress caused.In an embodiment of the present invention, weld seam is anti-
Drawing ability is more than the tensile strength of enhancing steel plate 3, to ensure that pier bottom can form a plastic hinge
Finally, obtained component is conserved, to form enhancing antidetonation pier stud.
Fig. 5-Fig. 8 is shown by testing and the enhancing antidetonation in the one embodiment of the invention obtained by FEM calculation
The correlated results of shock resistance of the pier stud under the conditions of the enhancing different-thickness of steel plate 3, wherein A, B, C and D point are respectively that reinforcing bar is mixed
Solidifying knoll post forms the optimal situation of plastic hinge simultaneously at the upper limb of pier bottom and enhancing steel plate 3.There it can be seen that compared to
The scheme of single plastic hinge (enhancing steel plate relatively thin or original non-reinforced pier stud) is only formed at pier bottom and is only strengthening the upper limb shape of steel plate 3
Into for the scheme of single plastic hinge (enhancing steel plate is thicker), Reinforced Concrete Pier Column provided in an embodiment of the present invention is in pier bottom and increasing
Side bearing capacity, the deflection of Reinforced Concrete Pier Column can be greatly improved after forming plastic hinge simultaneously at the upper limb of strong steel plate 3
And energy dissipation capacity, while pier stud bending rigidity can be reduced, and then the significant anti-seismic performance for improving Reinforced Concrete Pier Column.
Engineer applied is easy in structure simple structure of the present invention, easy construction, and pier is reduced under conditions of equal earthquake drag
Column section area, saves and builds space, reduces construction investment.
The enhancing antidetonation pier stud that the present invention is provided can be used for carrying compared with the situation that high-intensity earthquake is acted on, and can be used for
The situation of the very big commonly used load of carrying.
The foregoing is merely illustrative of the preferred embodiments of the present invention, as long as being made with description of the invention and accompanying drawing content
Any modifications, equivalent substitutions and improvements etc., should be included in the scope of the protection.
Claims (9)
1. one kind enhancing antidetonation pier stud, it is characterised in that including：
Pier stud basis；
Basic built-in fitting, the basic built-in fitting is embedded in the pier stud basis；
Reinforced Concrete Pier Column, the Reinforced Concrete Pier Column is cast on the basis of the pier stud；And
Strengthen steel plate, the enhancing Interal fixation be arranged on the Reinforced Concrete Pier Column lower surface on, and with the base
Plinth built-in fitting is fixedly connected, and the enhancing steel plate has preset thickness and preset height, with the Reinforced Concrete Pier Column
Bottom and the enhancing steel plate upper limb at simultaneously form plastic hinge.
2. strengthen antidetonation pier stud as claimed in claim 1, it is characterised in that the enhancing steel plate is welded with the basic built-in fitting
It is connected in one.
3. enhancing antidetonation pier stud as claimed in claim 2, it is characterised in that the enhancing steel plate and the basic built-in fitting it
Between weld strength be more than steel plate tensile strength.
4. strengthen antidetonation pier stud as claimed in claim 1, it is characterised in that the enhancing steel plate passes through structural adhesive and spiral shell
Bolt is fixedly mounted in the lower surface of the Reinforced Concrete Pier Column.
5. strengthen antidetonation pier stud as claimed in claim 1, it is characterised in that the basic built-in fitting is channel-section steel or I-steel.
6. a kind of strengthen the method for construction of antidetonation pier stud, it is characterised in that comprises the following steps：
S1) construction pier stud basis, and basic built-in fitting is embedded in the pier stud basis；
S2) the construction reinforced bar performance of concrete column confined on the basis of the pier stud；
S3 the preset thickness and preset height of enhancing steel plate) are determined and the enhancing steel plate is made；
S4) the enhancing Interal fixation is attached in the lower surface of the Reinforced Concrete Pier Column, and by the enhancing steel
Plate is fixedly connected with the basic built-in fitting；And
S5) component that curing step S4 is obtained with formed it is described enhancing antidetonation pier stud,
The enhancing steel plate has the preset thickness and the preset height, with the bottom of the Reinforced Concrete Pier Column and
Plastic hinge is formed at the upper limb of the enhancing steel plate simultaneously.
7. the method for construction of enhancing antidetonation pier stud as claimed in claim 7, it is characterised in that the preset height and described pre-
If thickness is determined by following steps order：
Step 1：The thickness of the setting enhancing steel plate；
Step 2：The height of the setting enhancing steel plate；
Step 3：Determine the bottom of the Reinforced Concrete Pier Column and strengthen the longitudinal reinforcement limiting strain at steel plate upper limb；
Step 4：Whether judge at the bottom of the Reinforced Concrete Pier Column and enhancing steel plate upper limb while forming plastic hinge；
If without while plastic hinge is formed, at the bottom of the enhancing antidetonation pier stud and the enhancing steel plate upper limb
The size of the limiting strain of longitudinal reinforcement；If the limiting strain of the longitudinal reinforcement at the enhancing steel plate upper limb is larger, increase
Plus the height of the enhancing steel plate, and step 2 is returned to the height of the enhancing steel plate after increase；If the enhancing antidetonation
The limiting strain of the longitudinal reinforcement of the bottom of pier stud is larger, then reduces the height of the enhancing steel plate, and with described in after reduction
The height of enhancing steel plate returns to step 2.
If forming plastic hinge simultaneously, judge whether the height of the enhancing steel plate meets the requirements；If the height meets
It is required that, then the thickness and the height are set as the preset height and the preset thickness；If the height is too high,
The thickness of the enhancing steel plate is then reduced, and step 1 is returned to the thickness of the enhancing steel plate after reduction；If the height
It is too low, then increase the thickness of the enhancing steel plate, and the thickness of the enhancing steel plate after increase returns to step 1；
The preset thickness and preset height of enhancing steel plate when it is determined that forming plastic hinge simultaneously.
8. strengthen the method for construction of antidetonation pier stud as claimed in claim 7, it is characterised in that when the Reinforced Concrete Pier Column
Bottom and the enhancing steel plate upper limb at longitudinal reinforcement reach capacity strain simultaneously, then judge in the reinforced concrete knoll
Plastic hinge is formed at the bottom of post and enhancing steel plate upper limb simultaneously.
9. strengthen the method for construction of antidetonation pier stud as claimed in claim 7, it is characterised in that when the height of the enhancing steel plate
For the Reinforced Concrete Pier Column height 1/5~1/2 when, judge it is described enhancing steel plate height meet the requirements.
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| CN201710352883.6A CN107034781B (en) | 2017-05-18 | 2017-05-18 | Reinforced anti-seismic pier column and construction method thereof |
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| CN201710352883.6A CN107034781B (en) | 2017-05-18 | 2017-05-18 | Reinforced anti-seismic pier column and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112632737A (en) * | 2019-09-23 | 2021-04-09 | 华龙国际核电技术有限公司 | Embedded part neutral axis determination method and device |
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| CN112632737B (en) * | 2019-09-23 | 2024-02-20 | 华龙国际核电技术有限公司 | Method and device for determining neutral axis of embedded part |
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