钢筋机械锚固板技术

Steel and mechanical anchorage plate technology

国家标准GB/T14370-2007

1.主要技术内容

    钢筋的锚固板是混凝土结构工程中的一项基本技术，钢筋机械锚固技术为混凝土结构中的钢筋锚固提供了一种全新的机械锚固方法，将螺帽与垫板合二为一的锚固板通过直螺纹连接方式与钢筋端部相连形成钢筋机械锚固装置。其作用机理为：钢筋的锚固力由钢筋与混凝土之间的粘结力和锚固板的局部承压力共同承提或全部由锚固板承担。    

1. Main technical content

Steel anchor plate is a basic technology of the concrete structure engineering, mechanical anchoring reinforcement for the reinforced concrete structure anchorage provides a kind of brand-new mechanical anchoring method, combined nuts and plate anchor plate through the straight thread connection with steel end to form reinforced mechanical anchorage device.

The mechanism of action is: the anchorage force of steel reinforcement is provided by the adhesion force between steel and concrete and the local bearing pressure of the anchorage plate.                                      
     

2、技术指标

    该指术相比传统的钢筋机械锚固技术，在混凝土结构中应用钢筋锚固板，可减少钢筋锚固长度40%又上，节约锚固钢筋40%以上；在框架节点中应用钢筋锚固板，可节约锚固用钢材60%以上，锚固板与钢筋端部通过螺纹连接，安装快捷，质量及必能易于保证：锚固板具有锚固刚度大，锚固性能好、方便施工等优点，有利于商品化供应：几种新型的混凝土框架顶层端节点与中间层端节点钢筋机械锚固的构造形式，可大大简化钢筋工程的现场施工，避免了钢筋密集拥堵，绑扎困难的问题，并可改善节点受力性能和提高混凝土建筑质量。
2. Technical indicators

Compared with traditional steel reinforcement and anchorage technology, it can be used to reduce the anchorage length of steel bars by 40% and more than 40%.

Application of steel anchor plate in the frame node, anchorage steel can be saved by more than 60%, anchor plate and steel bar end through the threaded connections, quick installation, quality and will easy to guarantee: anchor plate has big anchorage stiffness, anchorage performance is good, and the advantages of convenient construction, is advantageous to the commercialization of supply: the top several kinds of new type concrete frame node and the middle layer node structure form of reinforced mechanical anchoring, can greatly simplify the site construction of reinforced engineering, to avoid the reinforced dense congestion, tie difficult problem, and can improve the node force performance and improve the quality of concrete structures.

3、适用范围

    该技术适用于混凝土结构中热轧带肋钢筋的机械锚固，主要适用范围有：用钢筋锚固板代替传统弯筋，可用于框架结构梁柱节点：代替传统弯筋和箍筋，用于支梁支座：用于桥梁、水工结构、地铁、隧道、核电站等混凝土结构工程的钢筋锚固；用作钢筋锚杆（或拉杆）的紧固件等。
3. Scope of application

The technology is suitable for hot rolled ribbed steel bar in concrete structure mechanical anchoring, main scope of application: used instead of traditional steel bar anchoring plate bending reinforcement, can be used to frame beam-column joints: instead of traditional bent bar and stirrup, used in the beam support: used for Bridges, hydraulic structure, such as subway, tunnel, nuclear power plants of reinforced concrete structure engineering anchorage;

Used as a fastener for steel bolts or rods.
4、已应用的典型工程

    钢筋机械锚固技术在核电站工程、水利水电、房屋建筑等领域得于较为广泛地应用：如浙江三门AP1000核电站、秦山核电二期扩建、方家山核电站等；深圳万科第五园工程、怀来建设局综合楼等。

4. Typical projects that have been applied

Reinforced mechanical anchorage technology in nuclear power plant engineering, water conservancy and hydropower, building and other areas to more widely used, such as zhejiang sanmen AP1000 nuclear power plant, qinshan nuclear power phase ii expansion, Fang Gushan nuclear power station, etc.;

Shenzhen wanscience fifth garden project, huaii construction bureau complex building, etc.

Associate: manager wang

Contact number: 13131072767 (QQ WeChat)

                      钢筋锚固板的特点

The characteristics of the anchorage plate

1. 安全可靠 - 锚固性能好，可充分发挥钢筋强度，有利于更高强度钢筋使用。

1. Safe and reliable - anchoring performance is good, which can give full play to the strength of steel bar, which is beneficial to the use of higher strength steel reinforcement.

2. 简单高效 - 工艺简单，工效高，螺母与垫板合二为一，与钢筋直螺纹链接，   

          工艺简单，工效高，操作方便，加快钢筋工程施工速度。

2. Simple and high-efficiency - simple process, high efficiency, the nut and gasket are merged into one, and direct threaded links with steel bars,

The process is simple, the efficiency is high, the operation is convenient, elerate the construction speed of rebar construction.

3. 节材降耗 - 可减少或取消钢筋锚固长度，节约40-50%的锚固用钢材，降低成           本。

3. Saving materials can reduce or cancel the anchorage length of steel bars, and save 40-50% of the anchorage steel.

4. 提高质量 - 克服传统弯筋锚固拥挤和混凝土浇筑困难问题，提高工程质量。

4. Improve the quality - e the problems of traditional bending and concrete pouring, and improve the quality of the project.

5.工艺：切钢筋机下料、钢筋丝头加工、螺母直接安装扭上（建议用扳手）。

5.process: cutting machine, steel wire head processing, nuts directly mounting torsion (mended with wrench).

                        锚固板分类

Anchor plate classification

                         服务方式

Service mode

             主次梁节点

Master beam node

采用XJ部分锚固板，减少钢筋锚固长度。

次梁上部纵筋，伸至主梁外边纵筋内侧（主梁钢筋为一排时，可伸至主要梁箍内侧）

主梁顶部混凝土保护不变；次梁顶部混凝土保护层加厚，增加的厚度为主梁上部第一排纵筋直径。

纵向钢筋不承受反复拉、压力，且锚固长度范围内钢筋的混凝土保护层厚度和锚固区的混凝土强度等级满足要求时，可取0.3 带肋钢筋12d光园钢筋15d

Use XJ part anchor plate to reduce the anchorage length.

The upper longitudinal bar of the secondary beam is extended to the inner side of the main beam. (the main beam is one row, which can be extended to the inner part of the main beam.)

The concrete protection on top of the main beam is unchanged;

The concrete protection layer is thickened at the top of the secondary beam, and the thickness of the concrete is increased to the diameter of the first row of the main beam.

Longitudinal reinforcement is not repeated, under pressure, and the anchoring length scale reinforced concrete strength grade of concrete cover thickness and anchorage zone of meet the requirements, mend 0.3 ribbed steel 12 d garden light steel 15 d.

                          研究实验

research

                     钢筋机械锚固技术

钢筋与混凝土之间的粘合与锚固性能是混凝土结构研究的基本问题之一，它对结构中钢筋强度的发挥、裂缝控制、配筋结构以及结构的安全性均有重要影响。目前，在钢筋混凝土结构中，工程中钢筋常用的机械锚固板方式是使用末端带弯勾的构造，90°或130°弯勾钢筋虽然在一定的程度上增强了钢筋锚固性能、减少了锚固长度，但是弯折或较大的弯半径构造要求经常带来许多问题，如造成梁柱节点去钢筋拥挤、弯折或弯勾于其他钢筋的布置相互干扰、构件尺寸不能满足锚固长度要求等等。在使用大直径钢筋时，这些矛盾更加突现出来。如使用钢筋锚固板技术，很好的解决的这一难题，在保证钢筋机械锚固性能的基础上，优化钢筋锚固条件，减少钢筋锚固长度，节约锚固用钢材，方便施工，提高混凝土浇筑质量。

Steel and mechanical anchorage technology

Bonding and anchoring between reinforcement and concrete performance is one of the basic problems of reinforced concrete structure research, its structure of the steel bar intensity in the play, crack control, reinforcement structures and the safety of the structure has the important influence.

At present, in the reinforced concrete structure, steel commonly used in engineering machinery with curved hook at the end of the anchor plate method is to use structure, 90 ° or 130 ° bend hook steel although in a certain extent, enhance the steel anchorage performance, reduce the anchoring length, but bent or curved radius tectonic requirements often brings many problems, such as causing steel beam-column joints to crowded, bent or curved hook from other reinforcement layout interference, component size can not meet the requirement of the anchorage length, and so on.

In the use of large diameter steel, these contradictions are more emergent.

Such as using the steel bar anchoring plate technology, very good solution to this problem, on the basis of the guarantee reinforced mechanical anchorage performance, optimization of steel bar anchoring conditions, reduce the steel anchor length, anchor steel saving, convenient construction, improve the quality of concrete pouring.

                   应用场合

Applications

1.代替传统弯筋，用于框架结构梁节点；

2.代替传统弯筋和箍筋，用于简支梁支座；

3.用于桥梁、水工结构、地铁、隧道、核电站等各类混凝土结构工程的钢筋  锚固；

4.用作钢筋锚杆（或拉杆）的紧固件。

1. Replace traditional curved bars for frame structure beam nodes;

2. Instead of traditional bent and stirrup, it is used for the support of simple support beam.

3. Used for reinforcement and anchoring of concrete structures such as Bridges, hydraulic structures, subways, tunnels and nuclear power plants;

4. Used as fasteners for steel bars (or rods).

             工程案例精选

Engineering case selection

India Tower,印度（世界第二高楼）

Orchid Crown印度最高住宅

Toeer Refoma Tower墨西哥

昌江核电站

方家山核电站