CN104458402A - Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars - Google Patents
Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars Download PDFInfo
- Publication number
- CN104458402A CN104458402A CN201410759995.XA CN201410759995A CN104458402A CN 104458402 A CN104458402 A CN 104458402A CN 201410759995 A CN201410759995 A CN 201410759995A CN 104458402 A CN104458402 A CN 104458402A
- Authority
- CN
- China
- Prior art keywords
- load
- cfrp
- pcps
- crack
- loading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- 229920000049 Carbon (fiber) Polymers 0.000 title description 3
- 239000004917 carbon fiber Substances 0.000 title description 3
- 238000004519 manufacturing process Methods 0.000 title description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title description 3
- 239000011513 prestressed concrete Substances 0.000 title description 2
- 238000011068 loading method Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 238000010998 test method Methods 0.000 claims abstract description 8
- 238000005336 cracking Methods 0.000 claims abstract description 5
- 239000013259 porous coordination polymer Substances 0.000 claims abstract 11
- 230000003014 reinforcing effect Effects 0.000 claims 5
- 230000006378 damage Effects 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
本发明公开含有CFRP-PCPs复合筋试件的试验方法，包括如下步骤，在加载试验正式开始前，先对试件梁施加2KN的荷载，进行预加载，然后卸除荷载完成预加载；采取分级加载的方法，在局部配CFRP-PCPs试件梁出现裂缝之前，逐级增加施加的荷载，同时在每级加载结束时，对局部配CFRP-PCPs试件梁进行检查与观察；当加载的荷载达到开裂荷载时，读出裂缝的宽度，记录裂缝的高度以及裂缝的间距，同时在坐标纸描出裂缝开展的过程；从局部配CFRP-PCPs复合筋试件梁开裂后，每级增加的变量荷载上升到10KN,同样在每级加载结束，要对整体的加载现象进行拍照记录，同时测读裂缝的宽度、高度以及平均间距；直至局部配CFRP-PCPs复合筋试件加载至破坏。具有实时控制、误差小的特点。
The invention discloses a test method for a test piece containing CFRP-PCPs composite bars, which includes the following steps: before the loading test officially starts, a load of 2KN is applied to the test piece beam for preloading, and then the load is unloaded to complete the preloading; classification is adopted The loading method is to increase the applied load step by step before cracks appear in the locally equipped CFRP-PCPs specimen beam, and at the end of each level of loading, check and observe the partially equipped CFRP-PCPs specimen beam; when the loaded load When the cracking load is reached, read the width of the crack, record the height and distance of the crack, and at the same time trace the crack development process on the coordinate paper; Rising to 10KN, also at the end of each level of loading, the overall loading phenomenon should be photographed and recorded, and the width, height and average spacing of cracks should be measured and read at the same time; until the local CFRP-PCPs composite reinforcement specimen is loaded to failure. It has the characteristics of real-time control and small error.
Description
技术领域 technical field
本发明属于建筑技术领域，尤其涉及到CFRP-PCPs复合筋的试件制作方法。 The invention belongs to the technical field of construction, and in particular relates to a test piece manufacturing method of CFRP-PCPs composite bars.
背景技术 Background technique
混凝土是现代建筑工程中常用的建筑材料之一，目前对混凝土材料耐久性的理论和试验时土木工程研究的热点。近年来，随着碳纤维（Carbon Fiber Reinforced Polymer，CFRP ）筋材的设计理论及施工技术的成熟，逐渐成为钢筋的理想替代品，并运用到实际工程中。但本身是高强度低弹性模量的材料，无法有效控制混凝土裂缝的产生过程，其抗剪能力差及施工中现场张拉预应力操作困难等缺点，在建筑结构中其性能不能充分发挥。为充分利用FRP材料的高强抗腐蚀等优点，同时解决其本身存在的问题，需要对CFRP-PCPs(Carbon Fiber Reinforced Polymer-Prestressed Concrete Prisms)复合筋试块制作进行改进和完善。CFRP-PCPs复合筋是指CFRP筋与高性能活性粉末混凝土组合在一起的筋材。 Concrete is one of the most commonly used building materials in modern construction engineering. Theories and experiments on the durability of concrete materials are currently the hotspots of civil engineering research. In recent years, with the maturity of the design theory and construction technology of carbon fiber (Carbon Fiber Reinforced Polymer, CFRP) bars, it has gradually become an ideal substitute for steel bars and has been applied to practical projects. However, it is a material with high strength and low elastic modulus, which cannot effectively control the generation process of concrete cracks. Its poor shear resistance and difficult operation of on-site tensioning and prestressing during construction, etc., cannot fully exert its performance in building structures. In order to make full use of the advantages of FRP materials such as high strength and corrosion resistance, and at the same time solve its own problems, it is necessary to improve and perfect the production of CFRP-PCPs (Carbon Fiber Reinforced Polymer-Prestressed Concrete Prisms) composite bar test blocks. CFRP-PCPs composite reinforcement refers to the combination of CFRP reinforcement and high-performance reactive powder concrete.
发明内容 Contents of the invention
本发明旨在克服现有技术的缺陷，提供含有CFRP-PCPs复合筋试件的试验方法，具有实时控制、误差小的特点。 The invention aims to overcome the defects of the prior art, and provides a test method for a test piece containing CFRP-PCPs composite bars, which has the characteristics of real-time control and small error.
为了解决上述技术问题，本发明提供了如下的技术方案： In order to solve the problems of the technologies described above, the present invention provides the following technical solutions:
含有CFRP-PCPs复合筋试件试验方法，包括如下步骤，在加载试验正式开始前，先对试件梁施加2KN的荷载，进行预加载，然后卸除荷载完成预加载； The test method of the specimen containing CFRP-PCPs composite reinforcement includes the following steps. Before the loading test officially starts, a load of 2KN is applied to the specimen beam for preloading, and then the load is removed to complete the preloading;
采取分级加载的方法，在局部配CFRP-PCPs试件梁出现裂缝之前，逐级增加施加的荷载，同时在每级加载结束时，对局部配CFRP-PCPs试件梁进行检查与观察； Adopt the method of step-by-step loading, before the partial CFRP-PCPs test piece beam cracks, the applied load is increased step by step, and at the end of each stage of loading, the partial CFRP-PCPs test piece beam is inspected and observed;
当加载的荷载达到开裂荷载时，读出裂缝的宽度，记录裂缝的高度以及裂缝的间距，同时在坐标纸描出裂缝开展的过程；从局部配CFRP-PCPs复合筋试件梁开裂后，每级增加的变量荷载上升到10KN,同样在每级加载结束，要对整体的加载现象进行拍照记录，同时测读裂缝的宽度、高度以及平均间距； When the loaded load reaches the cracking load, read the crack width, record the crack height and crack spacing, and at the same time trace the crack development process on the coordinate paper; The increased variable load is raised to 10KN. Also at the end of each level of loading, the overall loading phenomenon should be photographed and recorded, and the width, height and average spacing of cracks should be measured and read at the same time;
直至局部配CFRP-PCPs复合筋试件加载至破坏。 Until the specimen with local CFRP-PCPs composite reinforcement is loaded to failure.
第二步采取每2KN为一个加载等级。 The second step takes every 2KN as a loading level.
试件破坏前，当荷载施加到钢筋屈服强度时，采用MTS电液伺服加载系统位移控制。 Before the specimen fails, when the load is applied to the yield strength of the steel bar, the displacement is controlled by the MTS electro-hydraulic servo loading system.
与现有技术相比较，本发明具有如下的有益效果： Compared with the prior art, the present invention has the following beneficial effects:
本试验方法能实施荷载加载过程的实时控制系统，分级加载荷载是可以测到加载到构件上的实际荷载，减少误差。 This test method can implement the real-time control system of the load loading process, and the step-by-step loading can measure the actual load loaded on the component and reduce the error.
附图说明 Description of drawings
图1为本发明CFRP-PCPs复合筋试件的加载示意图。 Fig. 1 is a schematic diagram of loading of a CFRP-PCPs composite bar specimen of the present invention.
具体实施方式 Detailed ways
以下结合附图对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明。 The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
如图1所示，含有CFRP-PCPs复合筋试件试验方法，包括如下步骤，在加载试验正式开始前，先对试件梁施加2KN的荷载，进行预加载，然后卸除荷载完成预加载； As shown in Figure 1, the test method of the specimen containing CFRP-PCPs composite reinforcement includes the following steps. Before the loading test officially starts, a load of 2KN is applied to the specimen beam for preloading, and then the load is removed to complete the preloading;
采取分级加载的方法，在局部配CFRP-PCPs试件梁1出现裂缝之前，逐级增加施加的荷载，同时在每级加载结束时，对局部配CFRP-PCPs试件梁进行检查与观察；采取每2KN为一个加载等级。 Adopt the method of staged loading, before the partial CFRP-PCPs test piece beam 1 cracks, the applied load is increased step by step, and at the end of each stage of loading, the partial CFRP-PCPs test piece beam is inspected and observed; adopt Every 2KN is a loading level.
当加载的荷载达到开裂荷载时，读出裂缝的宽度，记录裂缝的高度以及裂缝的间距，同时在坐标纸描出裂缝开展的过程；从局部配CFRP-PCPs复合筋试件梁开裂后，每级增加的变量荷载上升到10KN,同样在每级加载结束，要对整体的加载现象进行拍照记录，同时测读裂缝的宽度、高度以及平均间距； When the loaded load reaches the cracking load, read the crack width, record the crack height and crack spacing, and at the same time trace the crack development process on the coordinate paper; The increased variable load is raised to 10KN. Also at the end of each level of loading, the overall loading phenomenon should be photographed and recorded, and the width, height and average spacing of cracks should be measured and read at the same time;
试件破坏前，当荷载施加到钢筋屈服强度时，采用MTS电液伺服加载系统位移控制。 Before the specimen fails, when the load is applied to the yield strength of the steel bar, the displacement is controlled by the MTS electro-hydraulic servo loading system.
直至局部配CFRP-PCPs复合筋试件加载至破坏。 Until the specimen with local CFRP-PCPs composite reinforcement is loaded to failure.
本发明加载装置采用从美国MTS公司引进MTS电液伺服加载系统，它可实现荷载、位移双参量控制加载，也可进行静力、拟静力、疲劳和拟动力试验研究，特别是可以进行多维多点拟静力与拟动力实验。不仅能对加载的过程加以控制，而且可以很好地控制最终的结果，是实施荷载加载过程的实时控制系统。 The loading device of the present invention adopts the MTS electro-hydraulic servo loading system imported from MTS Company of the United States, which can realize dual-parameter control loading of load and displacement, and can also carry out static, pseudo-static, fatigue and pseudo-dynamic test research, especially multi-dimensional Multi-point quasi-static and pseudo-dynamic experiments. Not only can the loading process be controlled, but also the final result can be well controlled. It is a real-time control system for implementing the loading process.
以上所述仅为说明本发明的实施方式，并不用于限制本发明，对于本领域的技术人员来说，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above is only to illustrate the implementation of the present invention, and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410759995.XA CN104458402A (en) | 2014-12-13 | 2014-12-13 | Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410759995.XA CN104458402A (en) | 2014-12-13 | 2014-12-13 | Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104458402A true CN104458402A (en) | 2015-03-25 |
Family
ID=52904816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410759995.XA Pending CN104458402A (en) | 2014-12-13 | 2014-12-13 | Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104458402A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201649444U (en) * | 2010-04-28 | 2010-11-24 | 西安建筑科技大学 | New FRP Prestressed Composite Bar |
| CN201695573U (en) * | 2010-06-21 | 2011-01-05 | 广西工学院 | A New Prestressed FRP Composite Reinforced Concrete Beam |
| CN201952969U (en) * | 2011-01-25 | 2011-08-31 | 广西工学院 | Novel FRP (Fiber Reinforced Plastic) prestressed concrete slab |
| CN103205755A (en) * | 2013-04-16 | 2013-07-17 | 深圳大学 | Cathode protection method and cathode protection device for reinforced concrete adopting CFRP (carbon fibre reinforced plastics) embedded anode |
-
2014
- 2014-12-13 CN CN201410759995.XA patent/CN104458402A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201649444U (en) * | 2010-04-28 | 2010-11-24 | 西安建筑科技大学 | New FRP Prestressed Composite Bar |
| CN201695573U (en) * | 2010-06-21 | 2011-01-05 | 广西工学院 | A New Prestressed FRP Composite Reinforced Concrete Beam |
| CN201952969U (en) * | 2011-01-25 | 2011-08-31 | 广西工学院 | Novel FRP (Fiber Reinforced Plastic) prestressed concrete slab |
| CN103205755A (en) * | 2013-04-16 | 2013-07-17 | 深圳大学 | Cathode protection method and cathode protection device for reinforced concrete adopting CFRP (carbon fibre reinforced plastics) embedded anode |
Non-Patent Citations (1)
| Title |
|---|
| 屈建: "新型CFRP-PCPs复合筋混凝土梁受力性能试验研究与理论分析", 《CNKI优秀硕士学位论文全文库》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Fatigue behavior of cracked steel plates strengthened with different CFRP systems and configurations | |
| CN103487333B (en) | Asphalt mixture self-healing capability evaluating method | |
| Feng et al. | Combination of bamboo filling and FRP wrapping to strengthen steel members in compression | |
| CN103323340A (en) | Mechanical property test device and method of steel-concrete contact interface | |
| CN101691817A (en) | Method for additionally anchoring reinforced concrete beam strengthened with FRP cloth material in anti-bending way | |
| Carbas et al. | Functionally graded adhesive patch repairs of wood beams in civil applications | |
| Guo et al. | Fatigue performance of orthotropic steel decks with FRP angles: Field measurement and numerical analysis | |
| CN104060551A (en) | Bonded steel angle-based steel bridge out-of-plane distortion fatigue reinforcement structure and method | |
| Jin et al. | Compressive performance of underwater concrete columns strengthened by nondispersive mortar and stainless steel tubes | |
| Mohamed et al. | Stress concentration factors (SCF) of CFRP-reinforced T/Y-joints via ZPSS approach | |
| Zhou et al. | Seismic retrofit of nonuniformly corroded coastal bridge piers with FRP and engineered cementitious composite overlays | |
| Di et al. | Fatigue behavior of rib-to-floor beam junctions with separate inner stiffeners in orthotropic steel bridge decks | |
| Alfeehan | Strengthening of RC beams by external steel plate using mechanical connection technique | |
| CN202482781U (en) | Self-monitoring self-repairing system for stone mastic asphalt (SMA) box girder | |
| CN102680397B (en) | A device for testing the bonding strength of steel bars and concrete | |
| CN104458402A (en) | Method for manufacturing specimen containing CFRP-PCPs (carbon fiber reinforced polymer-prestressed concrete prisms) composite rebars | |
| Wang et al. | FY14 Status Report: CIRFT Testing Results on High Burnup UNF | |
| CN204125846U (en) | Fatigue Consolidation structure is out of shape outward based on the Steel Bridge Deck pasting angle steel | |
| Gu et al. | Numerical analysis of fatigue behavior of welded cfchs t-joints | |
| CN203977304U (en) | Steel Bridge Deck is out of shape tired cold reinforcing construction outward | |
| Fame et al. | Fatigue damage tolerance of adhesively bonded pultruded GFRP double-strap joints with adhesion defects | |
| CN205538450U (en) | Universal tester's load anchor clamps | |
| CN106320731A (en) | Crack strengthening method for steel I-beam flange zone | |
| Kong et al. | Mechanical analysis and parameter design of CFRP-Wrapped defected steel pipe | |
| CN102680396B (en) | A device for testing the bonding force between steel bars and concrete with stirrups |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |