CN108984869A - A kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member - Google Patents
A kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member Download PDFInfo
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Abstract
The present invention provides a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member, includes the following steps: step 1, and solid modelling is carried out in general finite meta software；Step 2, finite element analysis obtain stress distribution；Step 3, Rational choice calculate section, and are divided into multiple regions, and by integrating, summing etc., calculating process obtain each region resultant force (M, V, N), and the multiple region is the relatively regular region of shape；Step 4 carries out Reinforcement Design according to each region geometry feature and resultant force, and the resultant force is internal force, i.e., acquires internal force according to each regional stress result, carry out Reinforcement Design.This method makes it possible the application of Tension Members with Arbitrary Shape Section reinforced concrete member in the structure, improves the flexibility of structure design, can increase usable floor area, provides more abundant, personalized appearance；Subregion arrangement of reinforcement can make reinforcing bar configuration more reasonable, save material.
Description
Technical field
The present invention relates to field of civil engineering, especially a kind of Reinforcement Design of Tension Members with Arbitrary Shape Section reinforced concrete member
Method.
Background technique
Finite Element is the most widely used numerical computation method in current project analysis, wherein common unit packet
Include bar unit, shell unit and solid element etc..In conventional rebar concrete structure, the member sections rule such as beam, column, wall, ruler
It spends moderate, when carrying out structure design, is modeled usually in Structure Design Software using bar unit and shell unit, pass through finite elements
Method acquires internal force, carries out Reinforcement Design further according to " Code for design of concrete structures ".In large volume concrete structural, such as water conservancy project knot
Structure (ship lock, powerplant intakes etc.), high-level structure Thick Plate Transfer Story and bridge pier etc. then can be in general finite element analysis when design
It is modeled in software with solid element, stress distribution is acquired according to Finite Element, further according to " design of hydraulic concrete structures is advised
Model " by stress pattern progress Reinforcement Design.
However, common structure design software can not carry out Reinforcement Design to Tension Members with Arbitrary Shape Section reinforced concrete member, and
And a direction scale is not suitable for by the method that stress pattern carries out Reinforcement Design in " design of hydraulic concrete structures specification "
The component of significantly greater than other both direction scales, such as beam, column.
Therefore, it is necessary to new design methods, to eliminate problems of the prior art.
Summary of the invention
In order to overcome the above problem of the existing technology, the present invention provides a kind of Tension Members with Arbitrary Shape Section armored concrete structure
The reinforcement design method of part, includes the following steps:
Step 1 carries out solid modelling in general finite meta software；
Step 2, finite element analysis obtain stress distribution；
Step 3, Rational choice section, and be divided into multiple regions, by integrating, summing etc., calculating process are obtained
Each region resultant force；
Step 4, according to carrying out each region Reinforcement Design with joint efforts.
Preferably, the stress distribution of the step 2 is each direct stress, shearing stress distribution.
Preferably, perpendicular to king-post curve, the multiple region is that shape is opposite in the calculating section of the step 3
The region of rule.
Preferably, the step 3 further includes that reasonable control calculates section spacing, not only guarantees design accuracy, but also do not increase excessively
Add workload, when both direction scale is not much different when section, calculates section spacing and be not more than section long side length.
Preferably, the step 4 includes: and sums to solid element nodal force in each region and its to centroid torque, just
The available each resultant force in the region, the resultant force are internal force, i.e., acquire internal force according to each regional stress result, carry out arrangement of reinforcement and set
Meter.
Preferably, the resultant force includes: axle power N, shearing QX, QY and moment M X, MY.
Preferably, the Reinforcement Design includes: and presses in the case that the both direction scale in region differs ratio less than 4
Requirement according to column carries out Reinforcement Design；When region both direction scale difference ratio be greater than 4 in the case where, according to wall requirement into
Row Reinforcement Design.
Using the reinforcement design method of above-mentioned Tension Members with Arbitrary Shape Section reinforced concrete member, the beneficial effect is that:
(1) make it possible Tension Members with Arbitrary Shape Section reinforced concrete member in the structure application, improve structure design
Flexibility, usable floor area can be increased, more abundant, personalized appearance is provided；
(2) subregion arrangement of reinforcement can make reinforcing bar configuration more reasonable, save material.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.Target and feature of the invention will be apparent from view of following description taken together with the accompanying drawings,
In attached drawing:
Attached drawing 1 is the reinforcement design method process according to the Tension Members with Arbitrary Shape Section reinforced concrete member of the embodiment of the present invention
Figure；
Attached drawing 2 is to choose schematic diagram according to the slant-pull structure Sarasota and its calculating section of the embodiment of the present invention；
Attached drawing 3 is to be shown according to the calculating cross section division of the slant-pull structure Sarasota of the embodiment of the present invention and its local coordinate
It is intended to；
Attached drawing 4 is the corresponding Reinforcement Design schematic diagram being respectively adopted according to region shape according to the embodiment of the present invention；
Attached drawing 5 is the corresponding Reinforcement Design being respectively adopted according to region shape according to the embodiment of the present invention (containing size)
Schematic diagram.
Specific embodiment
Detailed description of the preferred embodiments with reference to the accompanying drawing, but be not intended to limit the invention
Protection scope.
Referring to attached drawing 1, the reinforcement design method process of Tension Members with Arbitrary Shape Section reinforced concrete member includes:
Step 1 carries out solid modelling in general finite meta software；
Step 2, finite element analysis obtain stress distribution；
Step 3, Rational choice calculate section, and are divided into the relatively regular region of multiple shapes, by integrating,
The calculating process such as summation obtain each region resultant force；
Step 4, according to each region arrangement of reinforcement is carried out with joint efforts, the resultant force is internal force, i.e., is acquired according to each regional stress result
Internal force carries out Reinforcement Design.
The present embodiment designs certain slant-pull structure Sarasota, and design procedure is as follows:
(1) it is modeled in general finite meta software using solid element, carries out analytical calculation；
(2) as shown in Fig. 2, according to stress analysis as a result, especially principal tensile stress is distributed, if choosing perpendicular to king-post curve
Dry calculating section, meanwhile, rationally control calculates section spacing, not only guarantee design accuracy, but also workload is not excessively increased --- it cuts
When face both direction scale is not much different, calculates section spacing and be not more than section long side length；
(3) section is calculated as shown in figure 3, being divided into the relatively regular several regions of shape, be divided into 6 areas here
Domain, middle section punch, and are indicated in Fig. 3 with broken line；
(4) general finite meta software would generally provide the output intent option of solid element nodal force obtained by stress integration, according to
Following formula is summed to solid element nodal force in each region and its to centroid torque, can obtain each resultant force in the region,
Such as axle power (N), shearing (QX、QY) and moment of flexure (MX、MY), each region local coordinate system is as shown in Figure 4:
Wherein, FnXi、FnYi、FnZiRespectively i-th of nodes X, Y, Z-direction nodal force, yCi、xCiRespectively i-th node with
Cross the local coordinate system X of regional centroid, the distance of Y-axis；Wherein the A-E in Fig. 4 is the typical node of solid element in region；
(5) corresponding existing reinforcement design method is respectively adopted according to region shape, wherein 1,2,3 region both directions
Scale is not much different, and carries out Reinforcement Design by the requirement of column, and 4,5,6 region both direction scales difference is larger, and ratio is big
It is designed in 4, therefore by the requirement of wall.
In this case, strength grade of concrete C50, at 65.500 absolute altitudes 1 region geometry having a size of 1400 × 2500mm,
Its arrangement of reinforcement is by Crack Control, mainly by resultant force under quasi- permanent combination are as follows: axial tension (N) 15700kN, around X-axis moment of flexure (MX)
4610kNm, around Y-axis moment of flexure (MY) 930kNm, X to shearing (QX) 557kN, Y-direction shears (QY) -71kN.It calculates accordingly,
Reinforcing bar (Q345) II 1900 × 1100 × 25 × 70mm of section is configured, configuration reinforcement is 84 36, and stirrup is 10@200.It is similarly right
Other regions carry out Reinforcement Design, and it is as shown in Figure 5 to obtain whole cross section arrangement of reinforcement at absolute altitude 65.500.
The method of the embodiment of the present invention can be used for Tension Members with Arbitrary Shape Section reinforced concrete member, using solid modelling, calculate
Spacing is chosen in section, and Rational choice calculates section, integrates to obtain internal force to stress subregion, carries out Reinforcement Design, to make to appoint
The application of meaning shaped cross reinforced concrete member in the structure is possibly realized, and improves the flexibility of structure design, Ke Yizeng
Add usable floor area, more abundant, personalized appearance is provided, subregion arrangement of reinforcement can make reinforcing bar configuration more reasonable, save material
Material.
It is provided for the embodiments of the invention technical solution above to be described in detail, specific case used herein
The principle and embodiment of the embodiment of the present invention are expounded, the explanation of above embodiments is only applicable to help to understand this
The principle of inventive embodiments；Simultaneously those of ordinary skill in the art, according to an embodiment of the invention, specific embodiment with
And there will be changes in application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (7)
1. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member, it is characterised in that include the following steps:
Step 1 carries out solid modelling in general finite meta software；
Step 2, finite element analysis obtain stress distribution；
Step 3, Rational choice calculates section, and is divided into multiple regions, obtains each region resultant force by integrating summation；
Step 4, according to carrying out each region Reinforcement Design with joint efforts.
2. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member according to claim 1, feature
Be: the stress distribution of the step 2 is each direct stress, shearing stress distribution.
3. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member according to claim 1, feature
Be: perpendicular to king-post curve, the multiple region is the relatively regular region of shape in the calculating section of the step 3.
4. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member according to claim 1, feature
Be: the step 3 further includes that reasonable control calculates section spacing, not only guarantees design accuracy, but also workload is not excessively increased,
When both direction scale is not much different when section, calculates section spacing and be not more than section long side length.
5. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member according to claim 1, feature
Be: the step 4 includes: to sum to solid element nodal force in each region and its to centroid torque, can be somebody's turn to do
Each resultant force in region, the resultant force are internal force, i.e., acquire internal force according to each regional stress result, carry out Reinforcement Design.
6. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member according to claim 5, feature
It is that the resultant force includes: axle power N, shearing QX, QY and moment M X, MY.
7. a kind of reinforcement design method of Tension Members with Arbitrary Shape Section reinforced concrete member according to claim 1, feature
Be: the Reinforcement Design includes: in the case that the both direction scale in region differs ratio less than 4, according to the requirement of column
Carry out Reinforcement Design；In the case that both direction scale difference ratio in region is greater than 4, arrangement of reinforcement is carried out according to the requirement of wall and is set
Meter.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111444655A (en) * | 2020-04-08 | 2020-07-24 | 中国水利水电科学研究院 | Static and dynamic reinforcement method for hydraulic building structure |
| CN112883621A (en) * | 2021-03-10 | 2021-06-01 | 陕西华山建设集团有限公司 | Method for acquiring positions of steel bar joints in irregular plate column shear wall under finite element analysis |
| CN113158318A (en) * | 2021-05-17 | 2021-07-23 | 云南省设计院集团有限公司 | Method for designing bearing capacity reinforcement for normal section of shear wall with special-shaped end columns |
| CN113486558A (en) * | 2021-07-13 | 2021-10-08 | 同济大学建筑设计研究院(集团)有限公司 | Method for configuring distributed reinforcing steel bars of concrete thin shell structure |
| CN114595612A (en) * | 2022-03-16 | 2022-06-07 | 上海核工程研究设计院有限公司 | Reinforcement calculation method and system for stressed member based on entity unit integral path |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111444655A (en) * | 2020-04-08 | 2020-07-24 | 中国水利水电科学研究院 | Static and dynamic reinforcement method for hydraulic building structure |
| CN112883621A (en) * | 2021-03-10 | 2021-06-01 | 陕西华山建设集团有限公司 | Method for acquiring positions of steel bar joints in irregular plate column shear wall under finite element analysis |
| CN112883621B (en) * | 2021-03-10 | 2022-09-02 | 陕西华山建设集团有限公司 | Method for acquiring positions of steel bar joints in irregular plate column shear wall under finite element analysis |
| CN113158318A (en) * | 2021-05-17 | 2021-07-23 | 云南省设计院集团有限公司 | Method for designing bearing capacity reinforcement for normal section of shear wall with special-shaped end columns |
| CN113158318B (en) * | 2021-05-17 | 2022-11-29 | 云南省设计院集团有限公司 | Method for designing bearing capacity reinforcement for normal section of shear wall with special-shaped end columns |
| CN113486558A (en) * | 2021-07-13 | 2021-10-08 | 同济大学建筑设计研究院(集团)有限公司 | Method for configuring distributed reinforcing steel bars of concrete thin shell structure |
| CN113486558B (en) * | 2021-07-13 | 2023-03-21 | 同济大学建筑设计研究院(集团)有限公司 | Method for configuring distributed reinforcing steel bars of concrete thin shell structure |
| CN114595612A (en) * | 2022-03-16 | 2022-06-07 | 上海核工程研究设计院有限公司 | Reinforcement calculation method and system for stressed member based on entity unit integral path |
| CN114595612B (en) * | 2022-03-16 | 2024-05-10 | 上海核工程研究设计院股份有限公司 | Reinforcement calculation method and system for stress component based on entity unit integral path |
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