WO2020238501A1 - Full-assembly pressure-bearing type variable-diameter steel cage expansion head anchor rod pile system - Google Patents

Full-assembly pressure-bearing type variable-diameter steel cage expansion head anchor rod pile system Download PDF

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WO2020238501A1
WO2020238501A1 PCT/CN2020/086227 CN2020086227W WO2020238501A1 WO 2020238501 A1 WO2020238501 A1 WO 2020238501A1 CN 2020086227 W CN2020086227 W CN 2020086227W WO 2020238501 A1 WO2020238501 A1 WO 2020238501A1
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anchor
variable
steel cage
cage
diameter steel
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PCT/CN2020/086227
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French (fr)
Chinese (zh)
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王林
聂文峰
陶刚
王军
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江苏景源万河环境科技有限公司
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Priority to CN201910450390.5A priority Critical patent/CN110344405A/en
Priority to CN201910450390.5 priority
Priority to CN202010017575.XA priority patent/CN111005376A/en
Priority to CN202010017575.X priority
Application filed by 江苏景源万河环境科技有限公司 filed Critical 江苏景源万河环境科技有限公司
Publication of WO2020238501A1 publication Critical patent/WO2020238501A1/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/10Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
    • E02D31/12Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/76Anchorings for bulkheads or sections thereof in as much as specially adapted therefor

Abstract

Provided is a full-assembly pressure-bearing type variable-diameter steel cage expansion head anchor rod pile system, comprising a variable-diameter steel cage, a steel bar connector, an anchor rod piece, and a limiter which is a limiting nut, the limiting nut can be an open or closed structure, and the like, the variable-diameter steel cage is limited on the anchor rod piece (defined position) by the limiting nut and a bottom plate anchor nut; the anchor rod piece uses finish rolling or common threaded steel bars, the steel bar connector is used for the length connection of the steel bar end portions of the anchor rod piece; the top of the anchor rod piece and the bottom plate are anchored, and the bottom of the anchor rod piece and the expansion head steel cage, namely the variable-diameter steel cage, are anchored; the variable-diameter steel cage is provided with a restraining and releasing device, the concrete or cement mortar crystalline portion is combined with the expansion head variable-diameter steel cage and an axial rod to form the variable-diameter steel cage expansion head anchor rod pile system; and the variable-diameter steel cage expansion head anchor rod pile framework system is fully assembled.

Description

一种全装配承压型变直径钢筋笼扩大头锚杆桩系统A fully assembled pressure-bearing variable-diameter steel cage enlarged head anchor pile system 技术领域Technical field
本发明涉及一种锚杆桩,尤其是变径钢筋笼及其扩体锚杆桩系统,主要用于建筑地下室抗浮基坑支护,边坡支护,以及加固等技术范畴,也用于抗压桩。本发明可提供的抗拔力较大,性能稳定可靠锚杆中及骨架,对减少环境污染,节能环保,是提高效率加快工程进度的装置与应用技术。The invention relates to an anchor pile, in particular a variable diameter steel cage and an expanded anchor pile system, which is mainly used for the support of anti-floating foundation pits in building basements, side slope support, and reinforcement. Compression pile. The invention can provide a large pull-out resistance, stable and reliable performance of the anchor rod and the frame, reduce environmental pollution, energy saving and environmental protection, and is a device and application technology for improving efficiency and accelerating engineering progress.
背景技术Background technique
直通或扩大头锚杆技术是一种新型的地下工程应用技术,符合国家倡导的“节能减排、绿色发展”精神。在解决地下室抗浮、基坑支护等方面,与一般传统工艺相比,更加的经济、环保;同时在成本、工期与耐久性等方面,也有较大的优势。随着扩体锚杆技术的推广,越来越多的工程采用扩体锚杆技术进行地下室抗浮、基坑支护等。与此同时,大量的工程实践表明,锚杆的承拉力远大于普通锚杆,普通锚杆变形位移的较大,因而在位移控制方面比传统的桩基础要求更高,因此如何更好的控制锚杆的变形,是对扩体锚杆技术改进的一个重要方向。业界公知的是,锚杆变形包括杆体自由段弹性变形和扩大头锚固段的土体蠕变变形两种,需要有相对应的产品和工法,也涉及承压型直通或变直径钢筋笼扩体锚杆工法。Straight-through or enlarged head bolt technology is a new type of underground engineering application technology, in line with the spirit of "energy saving, emission reduction, and green development" advocated by the country. Compared with general traditional technology, it is more economical and environmentally friendly in solving the problem of basement anti-floating and foundation pit support. At the same time, it also has greater advantages in terms of cost, construction period and durability. With the popularization of the expansion bolt technology, more and more projects adopt the expansion bolt technology for basement anti-floating and foundation pit support. At the same time, a large number of engineering practices have shown that the tensile force of anchor rods is much greater than that of ordinary anchor rods. The deformation and displacement of ordinary anchor rods are larger, so the displacement control requirements are higher than traditional pile foundations, so how to better control The deformation of the bolt is an important direction for the improvement of the expansion bolt technology. It is well known in the industry that the deformation of the anchor rod includes the elastic deformation of the free section of the rod body and the creep deformation of the soil in the anchoring section of the enlarged head. Corresponding products and construction methods are required. It also involves the expansion of pressure-bearing straight or variable diameter steel cages. Bolt construction method.
现阶段扩大头抗浮锚杆解决变形方法存在的问题,大量的工程实践表明,直通或扩大头锚杆变形比传统的桩基础大,因此如何更好的控制锚杆的变形,是对扩体锚杆技术改进的一个重要方向。At this stage, the expansion head anti-floating anchor rod solves the problems of the deformation method. A large number of engineering practices have shown that the deformation of the straight or expanded head anchor rod is larger than that of the traditional pile foundation. Therefore, how to better control the deformation of the anchor rod is to expand the body. An important direction for the improvement of bolt technology.
锚杆扩体段的受压土体塑性变形及残余变形,与扩体段承受的端压力有关以及所在土层性质相关,与杆体采用的钢筋根数无关。The plastic deformation and residual deformation of the compressed soil of the expansion section of the anchor rod are related to the end pressure endured by the expansion section and the nature of the soil layer, and has nothing to do with the number of steel bars used in the rod.
锚杆自由段杆体的弹性变形控制,杆体的弹性变形即钢筋的弹性变形主要由杆体钢筋的截面积、钢筋的弹性模量以及杆体的长度控制。轴向拉压变形公式:The elastic deformation of the free section of the anchor rod is controlled. The elastic deformation of the rod, that is, the elastic deformation of the steel bar, is mainly controlled by the cross-sectional area of the steel bar, the elastic modulus of the steel bar and the length of the rod. Axial tension and compression deformation formula:
Figure PCTCN2020086227-appb-000001
Figure PCTCN2020086227-appb-000001
以南京某项目地下室抗浮锚杆为例,锚杆总长13m(其中锚杆普通段长10.0m,直径200mm;扩体段直径750mm,长3.0m),抗拔特征值500KN的锚杆为例。抗拔锚杆理论弹性位移量计算表如下:Take the anti-floating anchor rod for the basement of a project in Nanjing as an example. The total length of the anchor rod is 13m (of which the ordinary section of the anchor rod is 10.0m long and 200mm in diameter; the expanded section is 750mm in diameter and 3.0m in length), and the anchor rod with a resistance value of 500KN as an example . The calculation table of the theoretical elastic displacement of the pull-out anchor is as follows:
Figure PCTCN2020086227-appb-000002
Figure PCTCN2020086227-appb-000002
在极限荷载的状态下,锚杆的理论自由变形达51.75mm。In the state of ultimate load, the theoretical free deformation of the anchor rod reaches 51.75mm.
经过试锚试验,其在极限抗拔力作用下,锚杆的最大变形81.6mm,残余变形约31.3mm,则其发生的实际弹性变形为50.3mm。由此可见,锚杆的弹性变形占扩大头锚杆最大变形量的50%以上。After the anchor test, the maximum deformation of the anchor rod is 81.6mm and the residual deformation is about 31.3mm under the action of the ultimate pull-out force. The actual elastic deformation is 50.3mm. It can be seen that the elastic deformation of the anchor rod accounts for more than 50% of the maximum deformation of the enlarged head anchor rod.
对于扩大头抗浮锚杆变形的控制,现阶段主要方法是通过后张法施加来解决锚杆自由段的弹性变形,具体实施步骤是,在主体结构底板浇筑完成以后,在底板上开槽,通过底板作为施加的支点,然后施加完成后,再后浇开槽处混凝土完成锚杆锁定。这种变形控制的方法主要缺陷在于,需要在底板施工完成并达到设计强度后才能施加,这样会大大延误工期,同时施加时需要在主体结构底板上开槽,对主体结构产生不同程度的破坏,对地下室防水产生不利影响,同时对基坑降水要求更长,相对成本增加更多。未解决承压型直通或变直径钢筋笼扩体锚杆 自由段变形的控制的方法。For the control of the deformation of the anti-floating anchor rod of the enlarged head, the main method at this stage is to apply the post-tensioning method to solve the elastic deformation of the free section of the anchor rod. The specific implementation steps are to slot the bottom plate after the main structure bottom plate is poured. The bottom plate is used as the application fulcrum, and after the application is completed, the concrete at the slot is poured to complete the anchor rod locking. The main defect of this deformation control method is that it needs to be applied after the construction of the bottom plate is completed and the design strength is reached, which will greatly delay the construction period. At the same time, it is necessary to slot in the bottom plate of the main structure during application, which will cause different degrees of damage to the main structure. It has an adverse effect on the waterproofing of the basement, and at the same time requires longer precipitation for the foundation pit, and the relative cost increases more. The method to control the deformation of the free section of the pressure-bearing straight-through or variable-diameter steel cage expansion anchor rod is not solved.
锚杆必须具备几个要素:抗拉强度高于岩土体的杆体,杆体一端可以和岩土体紧密接触形成摩擦(或粘结)阻力;锚杆杆体位于岩土体外部的另一端能够形成对岩土体的径向阻力;锚杆作为深入地层的受拉构件,它一端与工程构筑物连接,另一端深入地层中,整根锚杆分为自由段和锚固段,自由段是指将锚杆头处的拉力传至锚固体的区域,其功能是对锚杆施加;锚固段是指水泥浆体将筋与土层粘结的区域,其功能是将锚固体与土层的粘结摩擦作用增大,增加锚固体的承压或抗浮作用,将自由段的拉力传至土体深处。The anchor rod must have several elements: a rod with higher tensile strength than the rock and soil, one end of the rod can be in close contact with the rock and soil to form friction (or bonding) resistance; the other end of the anchor rod located outside the rock and soil can form Radial resistance to rock and soil; as a tensile member deep into the ground, the anchor rod is connected to the engineering structure at one end, and the other end penetrates into the ground. The whole anchor rod is divided into a free section and an anchor section. The free section refers to the anchor The tensile force at the head of the club is transmitted to the area of the anchor solid, and its function is to apply to the anchor rod; the anchor section refers to the area where the cement paste bonds the tendons and the soil layer, and its function is to bond and rub the anchor solid and the soil layer. The effect is increased, which increases the pressure-bearing or anti-floating effect of the anchor solid and transmits the tensile force of the free section to the depth of the soil.
本申请人申请的CN2017208194362一种克服抗浮抗拉锚杆施工变形的装置,用变直径的钢筋笼的锚杆,是用于岩土体加固的杆件体系结构。通过锚杆杆体的纵向拉力作用,克服岩土体抗拉能力远远低于抗压能力的缺点。从力学观点上是主要是提高了围岩体的粘聚力C和内摩擦角φ。其实质上锚杆位于岩土体内与岩土体形成一个新的复合体。这个复合体中的锚杆是解决围岩体的抗拉能力低的关键。从而使得岩土体自身的承载能力大大加强。The CN2017208194362 applied by the applicant is a device for overcoming the construction deformation of anti-floating and tensile anchor rods. The anchor rods with variable-diameter steel cages are used to strengthen the rock and soil. Through the longitudinal tensile force of the anchor rod body, the shortcomings of the tensile strength of the rock and soil are far lower than the compressive capacity. From a mechanical point of view, it mainly improves the cohesion C and the internal friction angle φ of the surrounding rock mass. In fact, the anchor rod is located in the rock and soil body to form a new complex with the rock and soil body. The anchor rod in this complex is the key to solving the low tensile capacity of the surrounding rock mass. As a result, the bearing capacity of the rock and soil is greatly enhanced.
锚杆是当代地下开采的矿山当中巷道支护的最基本的组成部分,将巷道的围岩束缚在一起,使围岩自身支护自身;现在锚杆不仅用于矿山,也用于建筑工程技术中,对地下室、边坡,隧道,坝体等进行主动加固。Bolt is the most basic component of roadway support in contemporary underground mining mines. It binds the surrounding rock of the roadway together so that the surrounding rock itself supports itself; now bolts are not only used in mines, but also in construction engineering technology Actively strengthen basements, slopes, tunnels, dams, etc.
锚杆的基本型是:钢筋或钢丝绳砂浆锚杆。以水泥砂浆作为锚杆与围岩的粘结剂。还包括倒楔式金属锚杆。管缝式锚杆。树脂锚杆。用树脂作为锚杆的粘结剂,成本较高。西安科技大学惠兴田发明了一种新型的螺旋式锚杆→自旋锚杆。自旋锚杆包括以下种类:自攻挤压旋进锚杆→在土层中无需钻孔直接挤压旋进安装锚固力20KN/m;自旋注浆锚杆→在钻孔中安装结束后利用自旋锚杆注浆就成为具有初锚力的自旋注浆锚杆;自旋树脂锚杆→在钻孔中安装的同时自旋锚杆将树脂药卷搅拌成为具有初锚力的自旋树脂锚杆;自钻自锚固锚杆→在自旋锚杆中空内放入钻杆使钻眼安装一次完成是具有初锚力的自钻锚杆;自旋喷浆锚杆→在土层中边喷浆边钻进安装锚注一次完成锚固力35KN/m;目前市场上常用的扩体锚杆技术有素浆体,囊式扩体锚杆技术等。The basic type of anchor rod is: steel or wire rope mortar anchor rod. Cement mortar is used as the binder between the bolt and the surrounding rock. It also includes an inverted wedge metal anchor. Pipe joint anchor rod. Resin anchor rod. The cost of using resin as the binder of the bolt is relatively high. Xi’an University of Science and Technology Hui Xingtian invented a new type of screw bolt→spin bolt. Spin anchors include the following types: self-tapping extrusion screw-in anchor rod → direct extrusion screw-in installation in the soil layer without drilling holes, anchoring force 20KN/m; spin-grouting anchor rod → after installation in the borehole The use of spin bolt grouting becomes a spin grouting bolt with initial anchoring force; spin resin bolt → while installing in the borehole, the spin bolt will stir the resin charge into a self-priming bolt with initial anchoring force. Rotary resin anchor rod; self-drilling and self-anchoring anchor rod → put the drill rod in the hollow of the spinning anchor rod to complete the installation of the drilling hole at one time is a self-drilling anchor rod with initial anchoring force; spin shotcrete anchor rod → in the soil The anchoring force is 35KN/m by drilling and installing the anchor at the same time. At present, the commonly used expansion bolt technologies on the market include plain slurry and capsule expansion bolt technologies.
本发明人已经就变径钢筋笼的结构作了限定,但对于如何释放钢筋笼扩大变径还需要专门结构,且要求稳定可靠的释放,因为变径在地下钻孔内。The inventors have already defined the structure of the diameter-reducing steel cage, but how to release the steel-reinforced cage to expand the diameter requires a special structure and requires stable and reliable release, because the diameter-reducing is in an underground borehole.
CN201710363883一种克服抗浮固定直径锚头或扩大头锚杆体系变形的工法是本申请人在先申请,当钻孔钻进至设计深度,能够开展高压旋喷施工或机械扩孔施工,放下锚杆的拉杆与固定直径锚头或扩大头,扩大头到位后扩大机构将扩大头扩大至设计尺寸,然后高压注浆或灌注混凝土在扩体段和整个自由段成桩;锚杆中拉杆采用能施加的螺纹钢筋;绑扎螺旋箍筋以及基底上的基础底板钢筋,绑扎过程中避免碰撞钢筋;最后,支模浇筑基础混凝土基础底板。CN201710363883 A construction method for overcoming the deformation of the anti-floating fixed diameter anchor head or the enlarged head anchor rod system was previously applied by the applicant. When the borehole is drilled to the design depth, high-pressure jet grouting construction or mechanical reaming construction can be carried out, and the anchor is lowered The tie rod of the rod and the fixed diameter anchor head or expansion head. After the expansion head is in place, the expansion mechanism will expand the expansion head to the design size, and then high-pressure grouting or pouring concrete is piled in the expansion section and the entire free section; the tie rod in the anchor rod adopts energy The applied threaded steel bars; tying the spiral stirrups and the foundation slab steel bars on the base to avoid collisions with the steel bars during the lashing process; finally, the foundation concrete foundation slab is poured by the formwork.
工程实际表明:承压型变直径钢筋笼扩体锚杆的位移由杆体的弹性变形和扩体段的滑移(塑性变形)两部分组成。锚杆至今仍未有发明。本申请人还申请了如下专利:包括但不限于CN2017211488836、一种变直径钢筋笼及锚杆,CN2017213763240一种囊袋扩张变直径钢筋笼及锚杆,CN2017211496584一种锚杆杆件,CN2017208194362一种克服抗浮抗拉锚杆施工变形的装置。CN2019205482437一种开放式限位螺母,CN2019205482441一种锚杆锁锚装置。Engineering practice shows that the displacement of the pressure-bearing variable-diameter steel cage expansion bolt consists of two parts: the elastic deformation of the rod body and the slip (plastic deformation) of the expansion section. The anchor rod has not yet been invented. The applicant also applied for the following patents: including but not limited to CN2017211488836, a variable diameter steel cage and anchor rod, CN2017213763240 a balloon expansion variable diameter steel cage and anchor rod, CN2017211496584 an anchor rod member, and CN2017208194362 a kind A device that overcomes the construction deformation of anti-floating and tensile anchor rods. CN2019205482437 is an open limit nut, and CN2019205482441 is an anchor rod locking device.
发明内容Summary of the invention
本发明目的是,提出一种变直径钢筋笼扩大头锚杆桩系统,可以广泛应用于各种抗浮抗拉的场合,包括锚杆杆件主体,利用直通或尤其是扩大头变直径钢筋笼构成的锚头一起组合形成变直径钢筋笼扩大头锚杆桩系统,克服抗浮变形、杆体自由段弹性变形。一种变直径钢筋笼扩大头锚杆桩系统的钢筋笼能扩大变径及释放结构,使变径钢筋笼工作,可应用于所有扩体锚杆技术,克服素浆体扩大头的锚固承载能力和整体性差的不足。The purpose of the present invention is to provide a variable-diameter steel cage enlarged head anchor pile system, which can be widely used in various anti-floating and tensile applications, including the main body of the anchor rod, using straight or especially enlarged head variable diameter steel cage The constituted anchor heads are combined together to form a variable-diameter steel cage enlarged head anchor rod pile system, which overcomes the anti-floating deformation and the elastic deformation of the free section of the rod body. A variable diameter steel cage enlarged head anchor pile system. The steel cage can expand the diameter reduction and release the structure, so that the diameter reduction steel cage can work. It can be applied to all the expansion anchor technology and overcome the anchor bearing capacity of the plain slurry expansion head. And the lack of integrity.
本发明的技术方案是,一种全装配承压型变直径钢筋笼扩大头锚杆桩系统,包括变直径钢筋笼,变直径钢筋笼设有约束和释放装置;锚杆杆件;钢筋连接器、限位器为限位螺母,限位螺母为开放式或封闭式结构,扩大头中的变直径钢筋笼与轴向杆被限位螺母在锚杆杆件上;变直径钢筋笼、锚杆杆件、钢筋连接器构成变直径钢筋笼扩大头锚杆桩骨架体系;锚杆杆件采用精轧螺纹钢筋、钢绞线、预应力拉杆,钢筋连接器用于锚杆杆件的长度连接;锚杆杆件顶部与建筑物底板锚固、锚杆杆件底部与扩大头钢筋笼即变直径钢筋笼锁定锚固;扩大头变直径钢筋笼、锚杆杆件、锚固件与混凝土、水泥砂浆或水泥浆结晶体进行结合,从而形成变直径钢筋笼扩大头锚杆桩成桩系统;变直径钢筋笼扩大头锚杆桩骨架体系是全装配式。The technical scheme of the present invention is a fully assembled pressure-bearing variable-diameter steel cage enlarged head anchor rod pile system, including a variable-diameter steel cage, the variable-diameter steel cage is provided with a restraint and release device; an anchor rod; a steel connector , The limiter is a limit nut, the limit nut is an open or closed structure, the variable diameter steel cage and the axial rod in the enlarged head are fixed on the anchor rod by the limit nut; the variable diameter steel cage, anchor rod Rods and steel bar connectors form a variable-diameter steel cage enlarged head anchor pile framework system; anchor rods use fine-rolled rebar, steel strands, and pre-stressed tie rods, and steel bar connectors are used for the length connection of anchor rods; The top of the rod member is anchored to the building bottom plate, the bottom of the anchor rod member and the enlarged head steel cage are locked and anchored; the enlarged head variable diameter steel cage, anchor rods, anchors and concrete, cement mortar or grout The crystals are combined to form a variable-diameter steel cage enlarged head anchor pile system; the variable-diameter steel cage enlarged head anchor pile frame system is a fully assembled type.
轴向杆上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构或其他传统方式。法兰螺母加井字形钢筋网组合结构或其他传统锚固方式与底板、围檩、梁等进行锚固。The fixing layer at the upper end of the axial rod adopts three-piece high-strength nut anchoring form, three-way high-strength nut or flange anchoring structure or other traditional methods. Flange nuts and tic-shaped steel mesh combined structure or other traditional anchoring methods are anchored to the bottom plate, purlin, beam, etc.
扩大头钢筋笼即变径钢筋笼包括钢筋主筋与配置钢筋配筋材料,即包括轴向杆即主筋、圆环或环板和若干竖筋、箍筋、若干筋条、圈状固定器,圆环或环板,承压底板与轴向杆垂直,若干竖筋的一端在圆环或环板在均匀 固定,每根竖筋的另一端或中部均连接一根筋条的一端,若干竖筋环绕轴向杆,筋条的另一端接到圈状固定器,圈状固定器在轴向杆杆上固定或滑动;采用可释放弹簧使钢筋笼变直径。The enlarged head reinforcement cage, namely the variable diameter reinforcement cage, includes the main reinforcement of the steel bar and the configuration of the reinforcement material, that is, the axial rod, the main reinforcement, the ring or the ring plate, and a number of vertical reinforcements, stirrups, a number of ribs, ring-shaped fixators, and Ring or ring plate, the pressure-bearing bottom plate is perpendicular to the axial rod, one end of a number of vertical ribs is evenly fixed on the ring or ring plate, the other end or middle of each vertical rib is connected to one end of a rib, several vertical ribs Around the axial rod, the other end of the rib is connected to a ring-shaped retainer, which is fixed or slid on the axial rod; a releasable spring is used to change the diameter of the steel cage.
扩大头钢筋笼若干竖筋外周设有活络连接的弹性箍筋;采用释放弹性箍筋的方式释放变直径钢筋笼,轴向杆即钢筋主筋与配置钢筋配筋材料一并由混凝土或水泥砂包裹并凝结。The enlarged head reinforcement cage is provided with flexible connection elastic stirrups on the periphery of several vertical reinforcements; the variable diameter reinforcement cage is released by releasing the elastic stirrups, and the axial rods, namely the main reinforcement of the steel reinforcement and the reinforcement material of the configuration, are both wrapped in concrete or cement sand And condense.
变直径钢筋笼外周包裹囊袋。外周可包裹、设置囊袋、防护罩、导向对中支架、或加装滑轮(板)。The outer circumference of the variable-diameter steel cage is wrapped with a pocket. The outer periphery can be wrapped, equipped with a bag, a protective cover, a guide centering bracket, or a pulley (plate) can be added.
所述锚杆杆件的前端,设有与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接或复合的装置,形成锚杆桩应用体系。The front end of the anchor rod is provided with a device for connecting or compounding with a variable-diameter steel cage, a fixed-diameter steel cage, a bladder or other anchor heads to form an anchor pile application system.
锚杆杆件的数量,采用1根或若干根精轧高强螺纹钢筋或普通螺纹钢或钢绞线;或进一步的变直径钢筋笼扩大头短桩与传统的灌注桩、预制桩、钢桩、竹节桩等结合,形成既可抗抜又可抗压的复合功能的桩。The number of anchor rods is one or several fine-rolled high-strength rebars or ordinary rebars or steel strands; or further short piles with variable diameter steel cages and enlarged heads and traditional cast-in-place piles, precast piles, steel piles, The combination of bamboo piles, etc. forms a pile with composite functions that can resist both squashing and compression.
变直径钢筋笼扩大头锚杆桩体系中的钢筋骨架的各个组成部分是装配式的;锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接时,采取在锚杆杆件的下端,预留与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头的长度相适应钢筋,在锚头底部分与锚垫板进行连接,或留有适当的钢筋长度,和成品锚杆头顶部用衔接螺母连接;或通过改进杆件和锚头,使锚杆杆件与各种变直径钢筋笼、固定直径钢筋笼、囊袋成为一个有机整体。The various components of the steel frame in the variable diameter steel cage enlarged head anchor pile system are assembled; when the anchor rod is connected with the variable diameter steel cage, the fixed diameter steel cage, the pocket or other anchor heads, the The lower end of the anchor rod is reserved for the length of the variable-diameter steel cage, the fixed-diameter steel cage, the pocket or other anchor heads. The bottom part of the anchor head is connected with the anchor plate, or appropriate steel is reserved. The length is connected with the top of the finished anchor rod head with an adapter nut; or by improving the rods and anchor heads, the anchor rod rods and various variable diameter steel cages, fixed diameter steel cages, and pockets become an organic whole.
锚杆杆件顶端,拉杆杆件上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构均采用高强螺母;基本结构锚杆顶部通过埋入套住锚杆的法兰螺母固定,或通过锚板并用螺母固定,或锚板与固定螺母一体化,并与基础底板的钢筋骨架体系连接。The top of the anchor rod and the upper end of the tie rod are anchored by a three-piece high-strength nut, and the three-way high-strength nut or flange anchoring structure uses high-strength nuts; the top of the basic structure anchor rod is embedded and sleeved The blue nut is fixed, or the anchor plate is fixed with a nut, or the anchor plate and the fixed nut are integrated, and are connected with the steel frame system of the foundation bottom plate.
变直径钢筋笼外周箍筋是网格状的,外周可包裹或设置囊袋、防护罩、导向帽、导向对中支架、或加装滑轮(板);根据需要在变直径钢筋笼内设置注浆管,或外设注浆管;变直径钢筋笼扩大头锚杆桩骨架体系是全装配式的,根据工程需要可选择设置“笼中套笼”或“串笼”的方式与混凝土、水泥浆或水泥砂浆包裹并凝结最终成桩;根据需要在变直径钢筋笼内设置注浆管,或外设注浆管,变直径钢筋笼扩大头锚杆桩骨架体系与混凝土、水泥浆或水泥砂浆包裹并凝结最终成桩。The outer circumferential stirrups of the variable-diameter steel cage are grid-like, and the outer circumference can be wrapped or set with a bag, protective cover, guide cap, guide centering bracket, or additional pulley (plate); according to the need, set the injection in the variable-diameter steel cage Grout pipe, or external grouting pipe; the variable diameter steel cage enlarged head anchor pile frame system is fully assembled, and the method of "cage in cage" or "cage in series" can be selected according to the needs of the project. Grout or cement mortar is wrapped and condensed to finally form a pile; according to needs, a grouting pipe is set in the variable diameter steel cage, or an external grouting pipe, the variable diameter steel cage enlarged head anchor rod pile framework system and concrete, cement slurry or cement mortar Wrap and condense to form a pile.
钢筋笼的直径可变。通过对钢筋笼若干部分配筋的弹性化、柔性化、简约化,设置约束与释放机制,使钢筋笼的直径可约束和伸展变化。变直径钢筋笼设有圈状固定器或圆环花件活络连接若干筋条在轴向杆杆上固定或滑动,形成钢筋笼的活络机制;选择采用包括但不限于约束绳、约束锁、约束销、约束罩、电子锁等约束方式使钢筋笼直径处于缩小约束状态,选择采用包括但不限于释放弹簧、弹簧片、弹性球、弹性体(如:牛皮筋等)、气囊、配重、旋转、轴向杆件伸缩、轴向杆件外加套管伸缩、施加外力、电动、电子遥控等方式展开释放;亦可以通过简化、选配、替代、优化组合活络机构、约束和释放装置的方法,使钢筋笼直径可变;根据工程需要可选择设置不同的变直径钢筋笼配筋的材质、规格、形状、结构、数量、尺寸的大小,且变直径钢筋笼可形成多种不同特征的立体几何形状,包括但不限于,如圆柱体、圆锥体、球体、正方体、长方体、竹节体、多面体、多节体等等The diameter of the steel cage is variable. By distributing the elasticity, flexibility, and simplification of the ribs in several parts of the steel cage, a restraint and release mechanism is set, so that the diameter of the steel cage can be restricted and stretched. The variable-diameter steel cage is equipped with a ring-shaped fixture or a circular flower piece. Several ribs are flexibly connected to fix or slide on the axial rods to form an active mechanism of the steel cage; options include but not limited to restraint rope, restraint lock, restraint Pins, restraint covers, electronic locks and other restraint methods make the diameter of the steel cage in a reduced restraint state. The choices include but not limited to release springs, spring sheets, elastic balls, elastomers (such as cowhide tendons, etc.), airbags, counterweights, and rotation , Axial rod expansion and contraction, axial rod expansion and contraction with casing, application of external force, electric, electronic remote control and other methods to expand and release; it can also be simplified, selected, replaced, optimized and combined with the method of active mechanism, restraint and release device, Make the diameter of the steel cage variable; according to the needs of the project, you can choose to set up different material, specification, shape, structure, quantity, size of the reinforcement of the variable diameter steel cage, and the variable diameter steel cage can form a variety of solid geometry with different characteristics Shapes, including but not limited to, such as cylinders, cones, spheres, cubes, cuboids, bamboo joints, polyhedrons, polyhedrons, etc.
可通过5G、区块链、大数据、二维码、三维码等科学的技术和方法,对其在地下存在的状态、工程安全性能、质量状况等,可以进行全程和主要节点动态和可追溯识别和检测,保证桩基的安全性和稳定性。Through 5G, blockchain, big data, two-dimensional code, three-dimensional code and other scientific technologies and methods, the status of its existence in the underground, engineering safety performance, quality status, etc., can be dynamic and traceable throughout the process and main nodes Identify and detect to ensure the safety and stability of the pile foundation.
扩大头钢筋笼为本申请人已经申请的技术方案,变径钢筋笼或弹簧状螺旋钢筋,变径钢筋笼包括轴向杆即主筋、圆环或环板和若干竖筋、若干筋条、圈状固定器,圆环或环板与轴向杆垂直,若干竖筋的一端在圆环或环板在均匀固定,每根竖筋的另一端或中部均连接一根筋条的一端,若干竖筋环绕轴向杆,筋条的另一端接到圈状固定器,圈状固定器在轴向杆杆上固定或滑动。竖筋外周设有箍筋,箍筋且与竖筋或轴向杆设有固定点,箍筋为绳状;轴向杆上设有轴向弹簧,并受到限位器或限位板条的限制;箍筋收紧时是未使用状态,箍筋的端部设有释放装置;箍筋也可以是螺旋弹簧状。旋箍筋的材质:玻璃纤维、芳纶纤维、碳纤维、石墨烯、碳元素相关的材料及其复合材料等。活络机构9、箍筋10、轴向杆套11、承压板12是本申请人变径钢筋笼的基本构件。The enlarged head reinforcement cage is a technical solution that the applicant has applied for. The reduced diameter reinforcement cage or spring-like spiral reinforcement. The reduced diameter reinforcement cage includes axial rods, namely main reinforcement, circular ring or ring plate, and several vertical reinforcements, several ribs, and rings. The ring or ring plate is perpendicular to the axial rod. One end of a number of vertical ribs is evenly fixed on the ring or ring plate. The other end or middle of each vertical rib is connected to one end of a rib. The rib surrounds the axial rod, and the other end of the rib is connected to a ring-shaped retainer, which is fixed or slid on the axial rod. There are stirrups on the outer circumference of the vertical ribs, and the stirrups are fixed with the vertical ribs or the axial rods. The stirrups are rope-shaped; the axial rods are equipped with axial springs and are affected by the stopper or the limiting slat. Restriction: When the stirrup is tightened, it is not in use, and the end of the stirrup is provided with a release device; the stirrup can also be in the shape of a coil spring. Stirrup materials: glass fiber, aramid fiber, carbon fiber, graphene, carbon-related materials and their composite materials, etc. The active mechanism 9, the stirrup 10, the axial rod sleeve 11, and the pressure bearing plate 12 are the basic components of the applicant's reduced-diameter steel cage.
轴向杆主筋为精轧螺纹钢筋,并配置变径钢筋笼为配筋材料,钢筋主筋与配置钢筋配筋材料一并凝结固化。混凝土或水泥砂浆、水泥浆或其他能固化材料包裹并凝结固化主筋(一般采用精轧螺纹钢筋)和扩大头钢筋笼15形成锚杆杆件系统;扩大头钢筋笼结合的混凝土或砂浆体(砼体)4。在锚杆杆件的适当位置设置适当数量的吊装扣、吊装环、安装吊点。The main reinforcement of the axial rod is a fine-rolled threaded steel bar, and the variable diameter steel cage is configured as the reinforcement material, and the main reinforcement of the steel reinforcement and the configuration of the reinforcement material are condensed and solidified. Concrete or cement mortar, cement slurry or other curable material wraps and solidifies the main reinforcement (usually using fine-rolled rebar) and the enlarged head reinforcement cage 15 to form an anchor rod system; the concrete or mortar body (concrete) combined with the enlarged head reinforcement cage Body) 4. Set an appropriate number of hoisting buckles, hoisting rings, and installation hoisting points at the appropriate positions of the anchor rod.
所述锚杆杆件的前端,设有与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接或复合的装置,形成锚杆应用体系。The front end of the anchor rod is provided with a device for connecting or compounding with a variable diameter steel bar cage, a fixed diameter steel bar cage, a bladder or other anchor heads to form an anchor rod application system.
所述的锚杆杆件,适用领域包括但不限于抗浮抗拉,道路、矿山开采、隧道桥梁、基坑和山体护坡、地质灾害处理;也用于抗压工程等领域。The application areas of the anchor rods include, but are not limited to, anti-floating and tensile resistance, roads, mining, tunnels and bridges, foundation pits and mountain slope protection, treatment of geological disasters; also used in compression engineering and other fields.
所述的锚杆体系统,其应用工法的步骤是:用于克服抗浮固定直径锚头或扩大头锚杆变形的工法,钻孔至设 计深度,开展高压旋喷施工或机械扩孔施工,成孔后,放置锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行嫁接的锚杆体,带变径钢筋笼的扩大头到位后,释放约束机构使变径钢筋笼扩大至设计尺寸,然后高压注浆或灌注混凝土在扩体段和整个锚杆杆件与孔的空隙处成桩,完成锚杆桩。In the described bolt body system, the steps of the application method are: the method used to overcome the deformation of the anti-floating fixed diameter anchor head or the enlarged head anchor rod, drill to the design depth, and carry out the high-pressure jet grouting construction or mechanical reaming construction, After the hole is formed, place the anchor rod body for grafting the anchor rod with the variable diameter steel cage, fixed diameter steel cage, pocket or other anchor head. After the expansion head with the variable diameter steel cage is in place, release the restraint mechanism to make the diameter change The reinforcement cage is expanded to the design size, and then high-pressure grouting or pouring concrete is piled at the expansion section and the gap between the entire anchor rod and the hole to complete the anchor pile.
锚杆杆件顶端,轴向杆上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构,均采用高强螺母13。基本结构是,锚杆中拉杆顶部通过埋入套住钢筋(拉杆)的法兰螺母固定,或可通过锚板并用螺母固定,与基础底板的钢筋骨架体系连接,图19为钢筋笼底部承压板与锚固螺母一体化,可替代图15、图16、图17、图18、图18-1中的限位螺母/器,以实现使钢筋笼固定限位在杆体设计位置上;最后,安装支模浇筑混凝土基础底板固定锚板。The fixing layer at the top of the anchor rod and the upper end of the axial rod adopts three-piece high-strength nut anchoring form, three-way high-strength nut or flange anchoring structure, and high-strength nut 13 is used. The basic structure is that the top of the tie rod in the anchor rod is fixed by the flange nut embedded and sleeved with the reinforcement (tie rod), or it can be fixed by the anchor plate and fixed with the nut, and is connected to the reinforcement frame system of the foundation floor. Figure 19 shows the bottom of the reinforcement cage under pressure The plate and the anchor nut are integrated, which can replace the limiting nut/device in Figure 15, Figure 16, Figure 17, Figure 18, Figure 18-1, to achieve the fixed position of the steel cage at the rod design position; finally, install The anchor plate is fixed to the base plate of the concrete foundation base plate by the formwork.
有益效果,通过锚杆的预先制备,可成为工厂化生产的标准化产品,形成系列规格的应力锚杆,先张法锚杆消除锚杆的变形量,可以很好的减少工程锚杆的位移。在施工中无须再次施加并浇注固定应力的材料,显然易见,工厂化的生产锚杆在质量、时间、操作方便性、综合效率、绿色环保、及成本价格上均远优于现场的操作。综合考虑,本发明通过锚杆的运用,使其承载力达到设计所需要的施加值,克服了采用的后张法施加施工的种种不便,可以大大减小扩体锚杆自由段的变形量,同时本方案施工更加简单,对基础的施工基本无影响。对于提高工程质量和技术的安全性,有着积极的作用。The beneficial effect is that through the pre-preparation of the anchor rod, it can become a standardized product of factory production and form a series of specifications of the stress anchor rod. The pre-tensioned anchor rod eliminates the deformation of the anchor rod and can well reduce the displacement of the engineering anchor rod. There is no need to reapply and pour fixed stress materials during construction. It is obviously easy to see that factory-based production bolts are far superior to on-site operations in terms of quality, time, ease of operation, overall efficiency, environmental protection, and cost. Considering comprehensively, the present invention, through the use of the anchor rod, enables the bearing capacity to reach the applied value required by the design, overcomes the inconvenience of the post-tensioning method used in the construction, and can greatly reduce the deformation of the free section of the expanded anchor rod. At the same time, the construction of this scheme is simpler and basically has no effect on the construction of the foundation. It has a positive effect on improving the quality of the project and the safety of technology.
承压型变径钢筋笼扩大头锚杆技术参照《JGT/T282-2012高压喷射扩大头锚杆技术规程》设计、施工、验收。本发明运用都属于扩大头锚杆或大头桩基技术的应用。The design, construction and acceptance of the pressure-bearing variable-diameter steel cage enlarged head bolt technology refer to "JGT/T282-2012 High-pressure Jet Enlarged Head Bolt Technical Specification". The application of the invention belongs to the application of enlarged head anchor rod or large head pile foundation technology.
本发明方案能形成有足够摩擦力的拉力或抗力传递的锚杆,锚固力明显增大且整个锚杆的一体性好,同样也用于大头桩基的混凝土钢筋笼骨架。主要用于建筑地下室抗浮基坑支护,边坡支护,以及加固等技术范畴。本发明技术可提供的抗拔力较大,性能稳定可靠,对减少环境污染,加快工程进度方面都有良好的作用。The solution of the present invention can form an anchor rod with sufficient frictional force for pulling or resisting force transmission, the anchoring force is obviously increased, and the whole anchor rod has good integrity, and is also used for the concrete reinforcement cage framework of the large-head pile foundation. Mainly used in building basement anti-floating foundation pit support, slope support, and reinforcement technology. The technology of the present invention can provide large pullout resistance, stable and reliable performance, and has a good effect on reducing environmental pollution and accelerating project progress.
附图说明Description of the drawings
图1为本发明锚杆桩截面纵截面示意图;Figure 1 is a schematic diagram of the longitudinal section of the anchor pile of the present invention;
图2为本发明锚杆桩未释放钢筋笼的结构截面示意图;Figure 2 is a schematic cross-sectional view of the structure of the anchor pile without releasing the reinforcement cage of the present invention;
图3为图1中D区的具体化一,是法兰锚固结构示意图;Fig. 3 is the first embodiment of area D in Fig. 1, which is a schematic diagram of flange anchoring structure;
图4为图1中D区的具体化二,是三通高强锚固形式;Figure 4 is the second embodiment of D area in Figure 1, which is a three-way high-strength anchoring form;
图5为图1中D区的具体化三,是高强螺母三件套锚固形式;图5-1为三件套一体化结构示意图;Figure 5 is the third embodiment of area D in Figure 1, which is a three-piece anchoring form of high-strength nuts; Figure 5-1 is a schematic diagram of the three-piece integrated structure;
图6为图1中D区的具体化四,是止水钢板加上主杆钢筋折弯的锚固形式,30为焊接的止水钢板,30-1为折弯的钢筋,在抗浮的底板上支撑受力。Figure 6 is the embodiment 4 of area D in Figure 1. It is the anchoring form of the water-stop steel plate plus the bending of the main bar steel bar. 30 is the welded water-stop steel plate, and 30-1 is the bent steel bar. The upper support is under force.
图7、8、9、10、11分别是第一到第五种对中支架1的示意图,其中图7-9为横截面结构示意图,图10-11为纵截面(平行于轴向杆的截面);对中支架查指钢筋笼下沉是预制孔内时对钢筋笼和轴向杆保护的装置,套在轴向杆3上,也可能套在如3-1预应力杆件上。对中支架是一个体积块,尤其是注塑的空腔,也可以中发泡高分子料制备,形状并无限制,中央有孔,可以穿过一根(图9-11)或多根(图7-8中是三根轴向杆)轴向杆,体积块穿过轴向杆后,体积块垂直于轴向杆的最大直径略小于钻孔的直径,此钻孔供下沉未释放的钢筋笼,有对中支架支撑住钻孔壁的作用。Figures 7, 8, 9, 10, 11 are schematic diagrams of the first to fifth types of centering brackets 1, wherein Figures 7-9 are cross-sectional structural diagrams, and Figures 10-11 are longitudinal sections (parallel to the axial rod Cross-section); The centering bracket refers to a device that protects the steel cage and the axial rod when the steel cage sinks in the prefabricated hole. It is sleeved on the axial rod 3 or may be sleeved on the prestressed rod such as 3-1. The centering bracket is a volume, especially an injection-molded cavity. It can also be made of foamed polymer materials. The shape is not limited. There is a hole in the center, which can pass through one (Figure 9-11) or multiple (Figure 9-11) 7-8 are three axial rods) Axial rod. After the volume block passes through the axial rod, the maximum diameter of the volume block perpendicular to the axial rod is slightly smaller than the diameter of the drilled hole. This drilled hole is used for sinking unreleased steel bars. The cage has the function of supporting the wall of the borehole by the centering bracket.
图12是锚杆桩杆体3的结构示意图,Figure 12 is a schematic diagram of the structure of the anchor pile body 3,
图13是第二种锚杆桩杆体3的结构示意图,图13-1锚杆桩杆体为钢绞线;Fig. 13 is a schematic diagram of the structure of the second type of anchor pile body 3, and Fig. 13-1 is a steel strand;
图14是第三种锚杆桩杆体3的结构示意图,可以是多根锚杆桩杆体的结构。也包括如3-1预应力杆件(锚杆桩杆体施加预应力后浇铸混凝土)。Fig. 14 is a schematic diagram of the structure of a third type of anchor pile body 3, which may be a structure of multiple anchor pile bodies. It also includes prestressed members such as 3-1 (the anchor pile body is prestressed and then cast concrete).
图15、16、17、18、18-1分别是第一至第五种限位装置的示意图;限位器5即限位装置主要是指限位螺母,在钢筋笼固定在轴向杆的一个位置时(即限位)使用。其中图15中,5-1为开放式限位螺母,图16中5-2为封闭式限位螺母,图17中,5-3为带销的开放式限位螺母、531为销钉、532为螺母上可穿过销钉的销孔,图18中,5-4为开放式限位螺母,541为销钉、542为螺母上可穿过销钉的销孔;图18-1中,5-5为可开放可闭合的限位套、551弧臂连接孔、552弧臂连接的销钉、553弧臂连接轴、554钢制弧臂。起码二段钢制弧臂制备,限位套可以开口置入主轴杆,再固定在主轴杆上。Figures 15, 16, 17, 18, and 18-1 are schematic diagrams of the first to fifth limit devices respectively; the limiter 5, the limit device, mainly refers to the limit nut, which is fixed on the axial rod in the steel cage Use at one position (ie limit). In Figure 15, 5-1 is an open limit nut, Figure 16 in 5-2 is a closed limit nut, in Figure 17, 5-3 is an open limit nut with pin, 531 is a pin, 532 It is the pin hole on the nut that can pass through the pin. In Figure 18, 5-4 is the open limit nut, 541 is the pin, and 542 is the pin hole on the nut that can pass through the pin; in Figure 18-1, 5-5 It is a limit sleeve that can be opened and closed, 551 arc arm connecting hole, 552 arc arm connecting pin, 553 arc arm connecting shaft, 554 steel arc arm. At least two sections of steel arc arms are prepared, and the limit sleeve can be opened into the spindle rod and then fixed on the spindle rod.
图19为钢筋笼底部承压板与锚固螺母一体化,可替代图15、图16、图17、图18、图18-1中的限位螺母/器,以实现使钢筋笼固定限位在杆体设计位置上;Figure 19 shows the integration of the pressure-bearing plate at the bottom of the reinforcement cage and the anchor nut, which can replace the limiting nut/device in Figure 15, Figure 16, Figure 17, Figure 18, Figure 18-1, to achieve the fixed position of the reinforcement cage At the pole design position;
图20为囊袋36加单体式纵截面为菱形(灯笼状)的钢筋笼15-1的结构示意图;20 is a schematic diagram of the structure of the pouch 36 plus a single-piece steel cage 15-1 with a rhombus (lantern-shaped) longitudinal section;
图21为囊袋36加双体式纵截面为菱形(灯笼状)的钢筋笼15-1的结构示意图;FIG. 21 is a structural diagram of the bladder 36 plus a double-piece steel cage 15-1 with a rhombus (lantern-shaped) longitudinal section;
图22为囊袋36加三体式纵截面为菱形(灯笼状)的钢筋笼15-1的结构示意图;FIG. 22 is a schematic diagram of the structure of the pocket 36 plus the three-part steel cage 15-1 with a rhombus (lantern-shaped) longitudinal section;
双体式、三体式纵截面为菱形(灯笼状)的钢筋笼是单体式串联的结构;图32中会详细描述纵截面为菱形(灯笼状)钢筋笼15-1的结构,套在轴向杆3的有两活络机构9,具有相同根数量的可撑开钢筋笼的扩展筋条9-3-1(一般4-16根,尤其是6-8根,钢筋笼直径大时,分布在轴向杆周围的筋条要多些,这些筋条取代竖筋)。扩展筋条9-3-1的一端活络固定在托盘9-2上,两活络机构的扩展筋条9-3-1的另一端互相连接在一道成为活络关节9-9。图中画出了囊袋的示意结构,但不带囊袋亦完全可行。Double-body and three-body steel cages with a rhombic (lantern-shaped) longitudinal section are a single-piece structure in series; Figure 32 will describe in detail the structure of the rhombic (lantern-shaped) steel cage 15-1 in the axial section. The rod 3 has two flexible mechanisms 9, which have the same number of expansion ribs 9-3-1 (generally 4-16, especially 6-8, when the diameter of the steel cage is large, they are distributed in There should be more ribs around the axial rod, these ribs replace the vertical ribs). One end of the expansion rib 9-3-1 is flexibly fixed on the tray 9-2, and the other ends of the expansion ribs 9-3-1 of the two movable mechanisms are connected to each other to form an movable joint 9-9. The figure shows the schematic structure of the pouch, but it is completely feasible without the pouch.
图23为简易螺旋弹簧构成的钢筋笼结构示意图;Figure 23 is a schematic diagram of the steel cage structure composed of simple coil springs;
图24为简易螺旋弹簧构成的钢筋笼结构示意图(带有囊袋);Figure 24 is a schematic diagram of the structure of a reinforced cage composed of a simple coil spring (with a pocket);
图25为简易螺旋弹簧构成的钢筋笼结构示意图,图23释放后;Figure 25 is a schematic diagram of the steel cage structure composed of simple coil springs, after Figure 23 is released;
图26为简易螺旋弹簧构成的钢筋笼带有囊袋,图24释放后,图23、图24为未释放状态,图25、图26为释放后的状态,图24释放后成为图26,是带有囊袋36的。Figure 26 is a reinforced cage made of a simple coil spring with a pocket. After Figure 24 is released, Figure 23 and Figure 24 are in the unreleased state, Figure 25 and Figure 26 are the released state, and Figure 24 is released into Figure 26. With a pocket 36.
图27是由竖筋6、动力弹簧7加活络机构9构成的简易钢筋笼结构的基本单元结构示意图;Figure 27 is a schematic diagram of the basic unit structure of a simple steel cage structure composed of vertical bars 6, power springs 7 and an active mechanism 9;
图28是图27的基础上加囊袋的结构示意图;Figure 28 is a schematic diagram of the structure of Figure 27 with a pouch added;
图29其中图28中图27的基础上加囊袋,而图29是在图28的基础上加导向帽。Fig. 29 is the addition of a bladder bag on the basis of Fig. 27 in Fig. 28, and Fig. 29 is a guide cap added on the basis of Fig. 28.
图30是图27外加栅格粗网的钢筋笼结构。Fig. 30 is the steel cage structure of Fig. 27 with coarse grid mesh.
图31为本发明纵截面为菱形(或灯笼状)钢筋笼15-1的结构加囊袋未打开;Figure 31 shows the structure of the rhombic (or lantern-shaped) steel cage 15-1 in the longitudinal section of the present invention with the bag not opened;
图32为本发明纵截面为菱形(或灯笼状)钢筋笼15-1的结构加囊袋打开。(参见图20-22描述)。Fig. 32 shows the structure of the rhombic (or lantern-shaped) reinforcement cage 15-1 in the longitudinal section of the present invention with the bag open. (Refer to the description in Figure 20-22).
图33是扩大头钢筋笼锚杆桩的桩杆与桩基(打开带筋钢筋笼)的结构示意图;Figure 33 is a schematic diagram of the pile rod and pile foundation (open the reinforced steel cage) of the enlarged head reinforced cage anchor pile;
图34是扩大头钢筋笼锚杆桩的桩杆的结构(扩大头钢筋笼的上方)示意图;Figure 34 is a schematic diagram of the structure of the pile rod of the enlarged head reinforcement cage anchor pile (above the enlarged head reinforcement cage);
图35是扩大头钢筋笼锚杆桩的桩杆的结构(扩大头钢筋笼的上方)示意图;Figure 35 is a schematic diagram of the structure of the pile rod of the enlarged head reinforcement cage anchor pile (above the enlarged head reinforcement cage);
图36是扩大头钢筋笼锚杆桩的桩杆的结构(扩大头钢筋笼的上方)示意图;Figure 36 is a schematic diagram of the structure of the pile rod of the enlarged head reinforcement cage anchor pile (above the enlarged head reinforcement cage);
图37是扩大头钢筋笼锚杆桩的桩杆部位(扩大头钢筋笼的上方)的结构示意图。图34中41-1为三根(多根)带筋钢筋的桩;图35中41-2为非变径钢筋笼桩杆;图36中41-3为钢格构桩;图37中41-4为预制桩。Fig. 37 is a schematic structural view of the pile position (above the enlarged head reinforcement cage) of the enlarged head reinforcement cage anchor pile. In Figure 34, 41-1 is a pile with three (multiple) reinforced steel bars; in Figure 35, 41-2 is a non-reducing steel cage pile; Figure 36, 41-3 is a steel lattice pile; Figure 37, 41- 4 is precast pile.
图38是钢筋笼带有护套32(另还加有尖端护套35)的透视结构示意图;Fig. 38 is a perspective structural diagram of a steel cage with a sheath 32 (with a tip sheath 35);
图39是图38的外观图;钢筋笼带有护套32(另还加有导向套或尖端护套35)的结构示意图,弹簧7为套在轴向杆上弹簧,弹簧7压缩时的钢筋笼收拢,弹簧7释放时顶开活络机构9,活络机构的筋条直到撑伞骨的作用撑开钢筋笼;33为约束销、32为约束绳,将钢筋笼约束成小直径的状态。Fig. 39 is an appearance view of Fig. 38; a structural schematic diagram of the steel cage with a sheath 32 (with a guide sleeve or a tip sheath 35), the spring 7 is a spring sleeved on the axial rod, and the steel bar when the spring 7 is compressed The cage is retracted, and when the spring 7 is released, the active mechanism 9 is pushed out, and the ribs of the active mechanism until the umbrella ribs function to open the steel cage; 33 is a restraining pin and 32 is a restraining rope, which restrains the steel cage to a small diameter state.
图40、图41均是护套34的展开示意图,图40是两片式、图41是三片式,围成一圈,片与之间设有绳孔,由绳缀连;外用约束绳32约束,护套用于保护释放前的钢筋笼。34为护套、35为尖端护套。Figure 40 and Figure 41 are the expanded schematic diagrams of the sheath 34, Figure 40 is a two-piece type, and Figure 41 is a three-piece type, enclosed in a circle, with a rope hole between the pieces, connected by a rope; external restraint rope 32 constraint, the sheath is used to protect the steel cage before release. 34 is a sheath and 35 is a tip sheath.
图42、图43为活络机构结构示意图,如图42、43所示,活络机构9包括一只圈套9-1,与竖筋相同数量的筋条9-3;筋条9-3的一端孔通过销轴9-4活动连接在圈套9-1上,筋条9-3的另一端活络连接(通过销轴9-5)在竖筋6上;起码有两只活络机构套在主轴或轴向杆,其中起码一只可以在轴向杆的滑动,滑动的动力来源于释放钢筋笼(直径变大的)的力,圈套9-1可以变形为一托盘9-2的结构;Figure 42 and Figure 43 are schematic diagrams of the structure of the activating mechanism. As shown in Figures 42, 43, the activating mechanism 9 includes a snare 9-1, the same number of ribs 9-3 as the vertical ribs; one end hole of the rib 9-3 It is movably connected to the snare 9-1 through the pin 9-4, and the other end of the rib 9-3 is flexibly connected (via the pin 9-5) to the vertical rib 6; at least there are two flexible mechanisms sleeved on the main shaft or shaft At least one of the rods can slide in the axial direction. The sliding power comes from the force of releasing the steel cage (larger diameter). The snare 9-1 can be deformed into the structure of a tray 9-2;
安装销轴3-1、销轴支架(U型固定支架通过)3-2,钢托盘9-3上设有与筋条9-3数对应的若干缺口9-6及环状箍线9-7筋条9-3的一端孔,筋条9-3的另一端分别销轴9-5与竖筋6连接,竖筋上直接设有孔供销轴通过或焊接一个带孔板。40为连接器轴向杆与上端桩骨架,41为上端桩。41-1为三根(多根)带筋钢筋的桩、41-2非变径钢筋笼、41-3钢格构桩、41-4预制桩。轴向杆亦称为主杆,可以是无孔轴向杆或有孔轴向杆(称为花杆)。Install the pin shaft 3-1, the pin shaft bracket (the U-shaped fixed bracket passes through) 3-2, the steel tray 9-3 is provided with a number of notches 9-6 corresponding to the number of ribs 9-3 and a ring-shaped hoop line 9- 7. One end hole of the rib 9-3 and the other end of the rib 9-3 are respectively connected with the pin 9-5 and the vertical rib 6, and the vertical rib is directly provided with a hole for the pin shaft to pass through or to weld a plate with a hole. 40 is the connector axial rod and upper end pile skeleton, 41 is the upper end pile. 41-1 are three (multiple) reinforced steel piles, 41-2 non-reducing steel cages, 41-3 steel lattice piles, and 41-4 precast piles. The axial rod is also called the main rod, and can be a non-porous axial rod or a bored axial rod (called a flower rod).
图44是钢筋笼带有护套32的透视结构示意图;Figure 44 is a perspective view of the structure of the steel cage with a sheath 32;
图45是图44的外观图,亦带有护套,动力弹簧7为套在轴向杆上弹簧,动力弹簧7压缩时的钢筋笼收拢,动力弹簧7释放时顶开活络机构9,活络机构的筋条直到撑伞骨的作用撑开钢筋笼;31为约束销的拉绳、33为约束销,32为约束绳将钢筋笼约束,约束销的拉绳31与为约束绳32可以是连接在一道的绳,约束销的拉绳头系在为约束销33上,约束销被插在活络机构的圆盘上的一个孔内,约束销的拉绳拨开,则约束绳松开,钢筋笼释放。Figure 45 is the appearance view of Figure 44, also with a sheath. The power spring 7 is a spring sleeved on the axial rod. When the power spring 7 is compressed, the steel cage is folded, and when the power spring 7 is released, the active mechanism 9 is opened. The ribs until the umbrella ribs are used to open the reinforcement cage; 31 is the rope of the restraining pin, 33 is the restraining pin, and 32 is the restraining rope to restrain the steel cage. The restraining pin 31 and the restraining rope 32 can be connected In a rope, the drawstring head of the restraint pin is tied to the restraint pin 33, and the restraint pin is inserted into a hole on the disc of the active mechanism. When the restraint pin pulls off, the restraint rope is loosened. Cage release.
图46是不带尖头的护套34展开图。Figure 46 is an expanded view of the sheath 34 without a tip.
图47、图48均是带尖头护套34的钢筋笼收拢的结构示意图。图47透视结构示意图;图48是图47的外观图;Fig. 47 and Fig. 48 are schematic diagrams of the folded structure of the reinforcing steel cage with the pointed sheath 34. Figure 47 is a perspective structural schematic diagram; Figure 48 is an external view of Figure 47;
图49、图50均是只带竖筋和两只活络机构9的钢筋笼结构,图50是图49外加栅格网的钢筋笼结构;Figure 49 and Figure 50 are the steel cage structure with only vertical bars and two active mechanisms 9, and Figure 50 is the steel cage structure of Figure 49 with grid mesh;
图51、图52均为轴向杆加外套管的活络机构,由外力释放打开的变直径钢筋笼;Figure 51 and Figure 52 are the flexible mechanism of the axial rod and the outer tube, and the variable diameter steel cage released by external force;
图53-1、图53-2、图53-3、图53-4、图53-5、图53-6、图53-7、图53-8为变直径钢筋笼钢筋笼中可供选择的活络机构结构示意图;Figure 53-1, Figure 53-2, Figure 53-3, Figure 53-4, Figure 53-5, Figure 53-6, Figure 53-7, Figure 53-8 are options for variable diameter steel cages Schematic diagram of the active organization structure;
图54-1(动力弹簧)、图54-2(外弹簧且与箍筋一体)、图54-3(动力弹簧片)、图54-4(动力气囊,气囊充气或爆炸后释放钢筋笼)、图54-5(配重)、图54-6(伸缩杆及外力,伸缩杆在外力作用下使筋条伸展)、图54-7(电子遥控,控制一电磁开关打开箍筋);以上均为变直径钢筋笼钢筋笼中可供选择的展开动力装置,但不限于上述;Figure 54-1 (power spring), Figure 54-2 (outer spring and integrated with stirrups), Figure 54-3 (power spring sheet), Figure 54-4 (power airbag, the reinforcement cage is released after the airbag is inflated or exploded) , Figure 54-5 (counterweight), Figure 54-6 (the telescopic rod and external force, the telescopic rod stretches the rib under the action of the external force), Figure 54-7 (electronic remote control, control an electromagnetic switch to open the stirrup); above They are all optional deployment power devices in the variable diameter steel cage steel cage, but not limited to the above;
图55-1(无孔轴向杆,画出三种)、图55-2(有孔轴向杆,亦称花杆,画出五种)、图55-3(钢筋骨架的轴向杆,画出四种)、图55-4(钢筋丝网轴向杆、画出二种)、图55-5(轴向杆加外套管,画出四种),均为变直径钢筋笼钢筋笼中可供选择的轴向杆的形式,但不限于上述。Figure 55-1 (Axial rod without holes, draw three types), Figure 55-2 (Axial rod with holes, also known as flower rods, draw five types), Figure 55-3 (Axial rods with steel frame , Draw four types), Figure 55-4 (reinforced wire mesh axial rod, draw two types), Figure 55-5 (axial rod plus outer tube, draw four types), all are variable diameter steel cages Alternative forms of axial rods in the cage, but not limited to the above.
具体实施方式Detailed ways
如图所示,图1与图2是连接成整体的结构;图2结构是变直径钢筋笼约束未打开状态;图图1是变直径钢筋笼扩大头锚杆桩系统的成桩状态。对中支架1、钢筋连接器(连接螺母)2、锚杆杆件3、扩大头钢筋笼结合的混凝土或砂浆体(砼体)4、限位器5、竖筋6、动力弹簧7、固定器8、活络机构(圆环花件或圈状固定器)9、螺旋箍筋10、轴向杆(套)11、承压板12、高强螺母13、导向帽14。限位器5中限位螺母,可为开放式或封闭式等结构,参见本申请人的在先专利申请。限位螺母尤其是可为开放式。15是约束后的钢筋笼,30为注浆管、31为约束销的拉绳、33为约束销、32为约束绳,将钢筋笼约束成小直径的状态。34为护套。35为尖端护套。囊袋36加单体式纵截面为菱形(灯笼状)钢筋笼15-1;柱形弹簧式钢筋笼15-2(左为收缩右为释放状态);配重37、金属网片38、9-8为U型片,包裹固定竖筋,上设有销轴(活络机构9的说明);纵截面为菱形(灯笼状)钢筋笼15-1的结构是,套在轴向杆3的有两活络机构9,具有相同根数量的可撑开钢筋笼的扩展筋条9-3-1(一般4-16根,尤其是6-8根,钢筋笼直径大时,分布在轴向杆周围的筋条要多些,这些筋条取代竖筋)。扩展筋条9-3-1的一端活络固定在托盘9-2上,两活络机构的扩展筋条9-3-1的另一端互相连接在一道成为活络关节9-9。30-1为注浆口。动力弹簧在本例中为拉簧7-1,拉伸应力弹簧时为钢筋笼收缩状态,释放时弹簧收缩为正常无应力状态。As shown in the figure, Figure 1 and Figure 2 are connected as a whole structure; Figure 2 is the structure of variable diameter steel cage restraint not opened; Figure 1 is the piled state of the variable diameter steel cage enlarged head anchor pile system. Centering bracket 1, reinforcement connector (connection nut) 2, anchor rod member 3, enlarged head reinforced cage combined concrete or mortar body (concrete body) 4, stopper 5, vertical reinforcement 6, power spring 7, fixed The device 8, the active mechanism (circular flower piece or ring-shaped fixer) 9, the spiral stirrup 10, the axial rod (sleeve) 11, the pressure plate 12, the high-strength nut 13, and the guide cap 14. The limit nut in the limiter 5 can be of an open type or a closed type, etc., please refer to the applicant's prior patent application. In particular, the limit nut can be open. 15 is the constrained steel cage, 30 is the grouting pipe, 31 is the draw rope of the restraint pin, 33 is the restraint pin, and 32 is the restraint rope, constraining the steel cage to a small diameter state. 34 is the sheath. 35 is the tip sheath. The pocket 36 plus the single-piece longitudinal section is a rhombus (lantern-shaped) steel cage 15-1; the column spring-type steel cage 15-2 (the left is contracted and the right is released); counterweight 37, metal mesh 38, 9 -8 is a U-shaped piece, which wraps the fixed vertical ribs, and is provided with a pin (instructions of the active mechanism 9); the longitudinal section is a rhombus (lantern-shaped) steel cage 15-1, which is sleeved on the axial rod 3. Two flexible mechanisms 9, with the same number of expansion ribs 9-3-1 (generally 4-16, especially 6-8) that can expand the reinforcement cage. When the diameter of the reinforcement cage is large, they are distributed around the axial rod The ribs should be more, these ribs replace the vertical ribs). One end of the extension rib 9-3-1 is flexibly fixed on the tray 9-2, and the other ends of the extension ribs 9-3-1 of the two flexible mechanisms are connected to each other to form an active joint 9-9. 30-1 is the note Pulp mouth. The power spring is a tension spring 7-1 in this example. When the stress spring is stretched, the steel cage is in a contracted state, and when released, the spring is contracted to a normal stress-free state.
导向帽14采用塑料或薄金属皮制备的包裹扩大头钢筋笼最下端部的套(钢筋笼处于收紧状态),套的最下端是锥台形,上端为柱形可以将承压板12、主杆端包裹,在成孔后便于钢筋笼不受阻碍的下放。尤其包裹部位可以设有锥台形。The guide cap 14 is made of plastic or thin metal skin to wrap the lower end of the enlarged head reinforcement cage (the reinforcement cage is in a tightened state). The lower end of the sleeve is in the shape of a truncated cone, and the upper end is cylindrical to connect the pressure plate 12, the main The rod ends are wrapped to facilitate the unimpeded lowering of the steel cage after the hole is formed. In particular, the wrapping part can be provided with a frustum shape.
图3-6中,轴向杆上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构。混凝土垫层15、斜拉钢筋28、钢筋16、止水胶条17、螺旋弹簧27、混凝土底板18、法兰螺母19、三通螺母20、钢垫板22、螺母21。如图1所示,一种锚杆杆件,将(高强)钢筋预先施加并锁定后,用包括但不限于混凝土或水泥砂浆、水泥浆或其他能固化材料包裹,混凝土、水泥砂浆、水泥浆或其他能固化材料凝固后,形成锚杆杆件。锚杆杆件内的配筋通常可选择包括但不限于/或者不选择配置钢筋笼、箍筋、钢套筒、钢丝网笼、承压板、承压法兰螺母或其他筋骨配筋材料。In Figure 3-6, the fixing layer at the upper end of the axial rod adopts a three-piece high-strength nut anchoring form, a three-way high-strength nut or flange anchoring structure. Concrete cushion 15, cable-stayed steel bar 28, steel bar 16, water-stop rubber strip 17, spiral spring 27, concrete bottom plate 18, flange nut 19, tee nut 20, steel backing plate 22, nut 21. As shown in Figure 1, an anchor rod, after pre-applied and locked (high-strength) steel bars, it is wrapped with concrete or cement mortar, cement mortar or other curable materials, concrete, cement mortar, cement mortar Or other curable materials are solidified to form anchor rods. The reinforcement in the anchor rod usually includes but is not limited to/or does not choose to configure steel cages, stirrups, steel sleeves, steel wire mesh cages, pressure plates, pressure flange nuts or other rib reinforcement materials.
图1-2中,是锚杆和带有变直径钢筋笼骨架扩大头短桩的结合体。包括扩大头变直径钢筋笼15、预应力拉杆连接器(连接螺母)2、预应力拉杆3;限位器5为限位螺母,可开放式或封闭式结构,扩大头钢筋笼中的与轴的固定器被限位螺母在主筋上限定位置;预应力拉杆一般采用高强精轧螺旋钢筋,或其他诸如预制预应力杆件、若干普通螺纹钢、或与传统预制桩、钢桩结合,钢筋连接器用于精轧螺旋钢筋的端部的长度连接;预应力拉杆上端的锚固方式选择高强螺母三件套锚固、三通高强螺母、特制高强法兰锚固结构或其他传统锚固方式。水泥浆或砂浆体(砼体)4浇铸扩大头钢筋笼15、钢筋连接器(连接螺母,具有相当的长度保证连接的强度)2用于连接精轧螺纹主钢筋主筋即轴向杆3至任意长度。In Figure 1-2, it is a combination of an anchor rod and a short pile with an enlarged head of a variable diameter steel cage skeleton. Including enlarged head variable diameter reinforcement cage 15, prestressed tie rod connector (connection nut) 2, prestressed tie rod 3; stopper 5 is a limit nut, which can be open or closed structure, and the shaft in the enlarged head reinforcement cage The position of the anchor is limited by the limit nut on the main reinforcement; the prestressed tie rods generally use high-strength finish-rolled spiral steel bars, or other such as prefabricated prestressed rods, a number of ordinary rebars, or combined with traditional prefabricated piles, steel piles, and rebar connection The anchor is used for the length connection of the ends of the finish-rolled spiral steel bars; the anchoring method of the upper end of the prestressed tie rod selects three-piece high-strength nut anchoring, three-way high-strength nut, special high-strength flange anchoring structure or other traditional anchoring methods. Cement paste or mortar body (concrete body) 4 Casting enlarged head reinforcement cage 15, Rebar connector (connecting nut, with a considerable length to ensure the strength of the connection) 2 Used to connect the main reinforcement of the finished threaded main reinforcement, that is, the axial rod 3 to any length.
变直径钢筋笼扩大头锚杆桩系统,包括扩大头钢筋笼15、钢筋连接器(连接螺母)2、主筋即轴向杆杆件3;限位器5为限位螺母,限位螺母可为开放式或封闭式等结构,扩大头钢筋笼中的与轴的固定器被限位螺母在主筋上限定位置;轴向杆采用精轧螺旋钢筋,钢筋连接器用于精轧螺旋钢筋的端部的长度连接。锚杆杆件上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构,均采用高强螺母13。Variable diameter reinforced cage enlarged head anchor rod pile system, including enlarged head reinforced cage 15, reinforcement connector (connecting nut) 2, main reinforcement, namely axial rod member 3; limiter 5 is a limit nut, and the limit nut can be For open or closed structures, the shaft holder in the enlarged head reinforcement cage is defined by the limit nut on the main reinforcement; the axial rod adopts the finish-rolled spiral steel bar, and the steel connector is used for the end of the finish-rolled spiral steel bar. Length connection. The fixing layer at the upper end of the anchor rod adopts three-piece high-strength nut anchoring form, three-way high-strength nut or flange anchoring structure, all of which adopt high-strength nut 13.
锚杆杆件内主筋的数量,是一根或者一根以上,但一般不多于15根(否则成混凝土桩了),钢筋的规格、性能、强度、直径可根据设计要求具体确定;锚杆杆件的长度、横截面的形状和面积,则根据具体的工程技术要求设定;当工程需要杆件的长度超长时,可以采取用螺母连接器的方式或其他方式,将两根或两根以上的锚杆杆件加以连接,以达成所需的长度The number of main bars in the anchor rod is one or more, but generally no more than 15 (otherwise it becomes a concrete pile). The specifications, performance, strength and diameter of the steel bars can be determined according to the design requirements; The length of the rod, the shape and area of the cross-section are set according to the specific engineering technical requirements; when the length of the rod is required to be too long in the project, a nut connector or other method can be used to connect two or two More than one anchor rod is connected to achieve the required length
锚杆杆件的主筋和变径钢筋笼使用的材料,包括但不限于:钢、钢材、钢绞线、钢丝绳、玻璃纤维、树脂、玻璃纤维增强树脂、芳纶纤维、碳纤维、石墨烯、碳元素相关的材料及其复合材料、高分子、高分子聚合物材料、纳米材料、金属材料和非金属材料等。The materials used for the main reinforcement of the anchor rod and the reducing steel cage, including but not limited to: steel, steel, steel strand, steel wire rope, glass fiber, resin, glass fiber reinforced resin, aramid fiber, carbon fiber, graphene, carbon Element-related materials and their composite materials, macromolecules, macromolecular polymer materials, nanomaterials, metallic materials and non-metallic materials, etc.
所述的变径钢筋笼立体几何形态包括但不限于:立方体、多面体、正多面体、四面体、长方体、圆柱、圆台、 棱柱、棱台、圆锥、棱锥、竹节状、串状、凸凹状,其可以是实心的,亦可以是空心的;平面横截面的形状包括但不限于:正方形、长方形、三角形、四边形、菱形、梯形、多边形、圆、椭圆、圆环、扇形、弓形;锚杆杆件可以是实心的,亦可以是空心的截面。The three-dimensional geometric forms of the reduced diameter steel bar cage include but are not limited to: cube, polyhedron, regular polyhedron, tetrahedron, cuboid, cylinder, truncated cone, prism, pyramid, cone, pyramid, bamboo joint, string, convex and concave, It can be solid or hollow; the shape of the plane cross-section includes but is not limited to: square, rectangle, triangle, quadrilateral, rhombus, trapezoid, polygon, circle, ellipse, ring, sector, arc; anchor rod The pieces can be solid or hollow in cross section.
锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接时,采取在锚杆杆件的下端,预留与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头的长度相适应钢筋,在锚头底部分与锚垫板进行连接,也可以留有适当的钢筋长度,和成品锚头顶部用衔接螺母连接;或通过改进杆件和锚头,使锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头成为一个有机整体能够传递应力。When connecting anchor rods with variable diameter steel cages, fixed diameter steel cages, pockets or other anchor heads, take the lower end of the anchor rods and reserve them for the variable diameter steel cages, fixed diameter steel cages, pockets or other anchor heads. The length of other anchor heads is suitable for the steel bar. Connect the anchor plate at the bottom of the anchor head. You can also leave an appropriate length of the steel bar and connect it with the top of the finished anchor head by connecting nuts; or by improving the rod and anchor head, Anchor rods and variable-diameter steel cages, fixed-diameter steel cages, pockets or other anchor heads form an organic whole to transmit stress.
撑开坚筋的活络机构(花键)装置,爆炸撑开也是一种方式,插销钢绳拉开,被套在主杆轴上压缩弹簧释放是本发明的主要形式,释放后,推动活络机构的圆盘运动后撑开竖筋,设有钢管套在轴向杆上亦可。Explosive expansion is also a way to expand the active mechanism (spline) of the rigid ribs. The bolt steel rope is pulled apart, and the spring is sleeved on the main rod shaft to release the compression spring. It is the main form of the present invention. After release, the active mechanism is pushed After the disc moves, the vertical ribs are opened, and steel pipes can be sleeved on the axial rods.
图6中30为焊接的止水钢板,30-1为折弯的钢筋,在抗浮的底板上支撑受力。图7-11中,对中支架查指钢筋笼下沉是预制孔内时对钢筋笼和轴向杆保护的装置,套在轴向杆3上,也可能套在如3-1预应力杆件上。对中支架是一个体积块,尤其是注塑的空腔,也可以中发泡高分子料制备,形状并无限制,中央有孔,可以穿过一根(图9-11)或多根(图7-8中是三根轴向杆)轴向杆,体积块穿过轴向杆后,体积块垂直于轴向杆的最大直径略小于钻孔的直径,此钻孔供下沉未释放的钢筋笼,有对中支架支撑住钻孔壁的作用。In Figure 6, 30 is a welded water-stop steel plate, and 30-1 is a bent steel bar, which is supported on the anti-floating bottom plate. In Figure 7-11, the centering bracket refers to the sinking of the steel cage is a device to protect the steel cage and the axial rod when it is inside the prefabricated hole. It is sleeved on the axial rod 3 or may be sleeved on the prestressed rod such as 3-1. Pieces. The centering bracket is a volume, especially an injection-molded cavity. It can also be made of foamed polymer materials. The shape is not limited. There is a hole in the center, which can pass through one (Figure 9-11) or multiple (Figure 9-11) 7-8 are three axial rods) Axial rod. After the volume block passes through the axial rod, the maximum diameter of the volume block perpendicular to the axial rod is slightly smaller than the diameter of the drilled hole. This drilled hole is used for sinking unreleased steel bars. The cage has the function of supporting the wall of the borehole by the centering bracket.
图15中,5-1为开放式限位螺母,图16中5-2为封闭式限位螺母,图17中,5-3为带销的开放式限位螺母、531为销钉、532为螺母上可穿过销钉的销孔,图18中,5-4为开放式限位螺母,541为销钉、542为螺母上可穿过销钉的销孔;图18-1中,5-5为可开放可闭合的限位套、551弧臂连接孔、552弧臂连接的销钉、553弧臂连接轴、554钢制弧臂。起码二段钢制弧臂制备,限位套可以开口置入主轴杆,再固定在主轴杆上。In Figure 15, 5-1 is an open limit nut, Figure 16 in 5-2 is a closed limit nut, in Figure 17, 5-3 is an open limit nut with pin, 531 is a pin, 532 is The nut can pass through the pin hole of the pin. In Figure 18, 5-4 is the open limit nut, 541 is the pin, and 542 is the pin hole on the nut that can pass through the pin; in Figure 18-1, 5-5 is Openable and closable limit sleeve, 551 arc arm connecting hole, 552 arc arm connecting pin, 553 arc arm connecting shaft, 554 steel arc arm. At least two sections of steel arc arms are prepared, and the limit sleeve can be opened into the spindle rod and then fixed on the spindle rod.
图19为钢筋笼底部承压板与锚固螺母一体化,可替代图15、图16、图17、图18、图18-1中的限位螺母/器,以实现使钢筋笼固定限位在杆体设计位置上。Figure 19 shows the integration of the pressure-bearing plate at the bottom of the reinforcement cage and the anchor nut, which can replace the limiting nut/device in Figure 15, Figure 16, Figure 17, Figure 18, Figure 18-1, to achieve the fixed position of the reinforcement cage The pole design position.
图20-22、图32中描述纵截面为菱形(灯笼状)钢筋笼15-1的结构,套在轴向杆3的有两活络机构9,具有相同根数量的可撑开钢筋笼的扩展筋条9-3-1(一般4-16根,尤其是6-8根,钢筋笼直径大时,分布在轴向杆周围的筋条要多些,这些筋条取代竖筋)。扩展筋条9-3-1的一端活络固定在托盘9-2上,两活络机构的扩展筋条9-3-1的另一端互相连接在一道成为活络关节9-9。图中画出了囊袋的示意结构,但不带囊袋亦完全可行。Figure 20-22 and Figure 32 describe the structure of the rhombic (lantern-shaped) steel cage 15-1 in longitudinal section. There are two movable mechanisms 9 sleeved on the axial rod 3, which have the same number of expansions that can expand the steel cage. Ribs 9-3-1 (generally 4-16, especially 6-8, when the diameter of the reinforcement cage is large, there are more ribs distributed around the axial rod, and these ribs replace the vertical ribs). One end of the expansion rib 9-3-1 is flexibly fixed on the tray 9-2, and the other ends of the expansion ribs 9-3-1 of the two movable mechanisms are connected to each other to form an movable joint 9-9. The figure shows the schematic structure of the pouch, but it is completely feasible without the pouch.
图33中,40为扩大头钢筋笼骨架底桩与上部杆桩连接结构,连接时可以采用骨架通过接螺旋钢套(具有相当的长度,具有内螺纹将轴向杆连接到设计的长度)或焊接。图38-39中动力弹簧7压缩时的钢筋笼收拢,动力弹簧7释放时顶开活络机构9,活络机构的筋条直到撑伞骨的作用撑开钢筋笼;33为约束销、32为约束绳,将钢筋笼约束成小直径的状态。图40是两片式、图41是三片式,围成一圈,片与之间设有绳孔,由绳缀连;外用约束绳32约束,护套用于保护释放前的钢筋笼。34为护套、35为尖端护套。In Figure 33, 40 is the connection structure between the bottom pile and the upper pole pile of the enlarged head reinforcement cage skeleton. When connecting, the skeleton can be connected to the spiral steel sleeve (with a considerable length, with internal threads to connect the axial rod to the designed length) or welding. In Figure 38-39, the steel cage is folded when the power spring 7 is compressed, and when the power spring 7 is released, the movable mechanism 9 is pushed out, and the ribs of the movable mechanism until the umbrella ribs are used to open the steel cage; 33 is the restraint pin and 32 is the restraint The rope constrains the steel cage to a small diameter state. Figure 40 is a two-piece type, and Figure 41 is a three-piece type, surrounded in a circle, with rope holes between the plates and connected by a rope; the external restraint rope 32 is used for restraint, and the sheath is used to protect the steel cage before release. 34 is a sheath and 35 is a tip sheath.
如图42、43所示,活络机构9包括一只圈套9-1,与竖筋相同数量的筋条9-3;筋条9-3的一端孔通过销轴9-4活动连接在圈套9-1上,筋条9-3的另一端活络连接(通过销轴9-5)在竖筋6上;起码有两只活络机构套在主轴或轴向杆,其中起码一只可以在轴向杆的滑动,滑动的动力来源于释放钢筋笼(直径变大的)的力,圈套9-1可以变形为一托盘9-2的结构;As shown in Figures 42 and 43, the activating mechanism 9 includes a snare 9-1, the same number of ribs 9-3 as the vertical ribs; one end of the rib 9-3 is movably connected to the snare 9 through a pin 9-4 -1, the other end of the rib 9-3 is flexibly connected (via the pin 9-5) to the vertical rib 6; at least two activating mechanisms are sleeved on the main shaft or axial rod, of which at least one can be in the axial direction The sliding of the rod, the power of sliding comes from the force of releasing the steel cage (larger diameter), the snare 9-1 can be deformed into the structure of a tray 9-2;
图44-45中,亦带有护套,动力弹簧7为套在轴向杆上弹簧,动力弹簧7压缩时的钢筋笼收拢,动力弹簧7释放时顶开活络机构9,活络机构的筋条直到撑伞骨的作用撑开钢筋笼;31为约束销的拉绳、33为约束销,32为约束绳将钢筋笼约束,约束销的拉绳31与为约束绳32可以是连接在一道的绳,约束销的拉绳头系在为约束销33上,约束销被插在活络机构的圆盘上的一个孔内,约束销的拉绳拨开,则约束绳松开,钢筋笼释放。In Figures 44-45, there is also a sheath. The power spring 7 is a spring sleeved on the axial rod. When the power spring 7 is compressed, the steel cage is retracted, and when the power spring 7 is released, the movable mechanism 9 is opened. The ribs of the movable mechanism Until the role of the umbrella ribs, the reinforcement cage is opened; 31 is the draw rope of the restraining pin, 33 is the restraining pin, and 32 is the restraining rope to restrain the steel cage. The restraining pin 31 and the restraining rope 32 can be connected together. The rope head of the restraining pin is tied to the restraining pin 33, and the restraining pin is inserted into a hole on the disc of the active mechanism. When the pulling rope of the restraining pin is pulled out, the restraining rope is released and the steel cage is released.
图51、图52均为轴向杆加外套管的活络机构,由外力释放打开的变直径钢筋笼。Figure 51 and Figure 52 are the flexible mechanism of the axial rod and the outer sleeve, and the variable diameter steel cage released and opened by the external force.
图53-1、图53-2、图53-3、图53-4、图53-5、图53-6、图53-7、图53-8为变直径钢筋笼钢筋笼中一般常见的可供选择的活络机构;Figure 53-1, Figure 53-2, Figure 53-3, Figure 53-4, Figure 53-5, Figure 53-6, Figure 53-7, Figure 53-8 are generally common in the variable diameter steel cage steel cage Alternative active agencies;
图54-1、图54-2、图54-3、图54-4、图54-5、图54-6、图54-7为变直径钢筋笼钢筋笼中一般常见的可供选择的展开动力装置;Figure 54-1, Figure 54-2, Figure 54-3, Figure 54-4, Figure 54-5, Figure 54-6, Figure 54-7 are common alternative deployments in the variable diameter steel cage steel cage powerplant;
图55-1、图55-2、图55-3、图55-4、图55-5为变直径钢筋笼钢筋笼中一般常见的可供选择的轴向杆的形式。Figure 55-1, Figure 55-2, Figure 55-3, Figure 55-4, Figure 55-5 are generally common alternative forms of axial rods in variable diameter steel cages.
本发明所述利用先张法锚杆杆件的应用,适用领域包括但不限于抗浮抗拉,道路、矿山开采、隧道桥梁、基坑和山体护坡、高压输变电铁塔加固、江河湖海堤坝加固、地质灾害处理;也用于抗压工程等领域。可以根据工程设计用途的的需要,可以作为抗压桩使用。使用本发明克服抗浮直通或扩大头锚杆。The application of the pre-tensioned anchor rod of the present invention includes but not limited to anti-floating and tensile, roads, mining, tunnels and bridges, foundation pits and mountain slope protection, high-voltage power transmission tower reinforcement, rivers, lakes and seas Dam reinforcement, geological disaster treatment; also used in compression engineering and other fields. It can be used as a compression pile according to the needs of the engineering design. The invention overcomes the anti-floating straight-through or enlarged head anchor rod.
变直径钢筋笼若干竖筋外周设有活络连接的弹性箍筋;采用释放弹性箍筋的方式释放变直径钢筋笼。The outer periphery of several vertical bars of the variable-diameter steel cage is provided with flexible connection elastic stirrups; the variable-diameter steel cage is released by releasing the elastic stirrups.
变直径钢筋笼外周箍筋可以是网格状的,外周可包裹、设置囊袋、防护罩、导向对中支架、或加装滑轮(板)。The outer circumferential stirrups of the variable-diameter steel cage can be grid-like, and the outer circumference can be wrapped, equipped with a bag, protective cover, guide centering bracket, or installed with a pulley (plate).
所述锚杆杆件的前端,设有与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接或复合的装置,形成锚杆桩应用体系。The front end of the anchor rod is provided with a device for connecting or compounding with a variable-diameter steel cage, a fixed-diameter steel cage, a bladder or other anchor heads to form an anchor pile application system.
锚杆杆件的数量,采用1根或若干根精轧高强螺纹钢筋(或普通螺纹钢);或进一步的变直径钢筋笼扩大头短桩与传统的灌注桩、预制桩、钢桩、竹节桩等结合,形成既可抗抜又可抗压的复合功能的桩。The number of anchor rods is 1 or several high-strength rebars (or ordinary rebars); or further short piles with variable diameter rebar cage expansion heads and traditional cast-in-place piles, precast piles, steel piles, and bamboo joints The piles, etc. are combined to form a pile with composite functions that can resist both compression and compression.
变直径钢筋笼扩大头锚杆桩体系中的钢筋骨架的各个组成部分是装配式的;锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接时,采取在锚杆杆件的下端,预留与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头的长度相适应钢筋,在锚头底部分与锚垫板进行连接,或留有适当的钢筋长度,和成品锚杆头顶部用衔接螺母连接;或通过改进杆件和锚头,使锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋成为一个有机整体。The various components of the steel frame in the variable diameter steel cage enlarged head anchor pile system are assembled; when the anchor rod is connected with the variable diameter steel cage, the fixed diameter steel cage, the pocket or other anchor heads, the The lower end of the anchor rod is reserved for the length of the variable-diameter steel cage, the fixed-diameter steel cage, the pocket or other anchor heads. The bottom part of the anchor head is connected with the anchor plate, or appropriate steel is reserved The length is connected with the top of the finished anchor rod head with an adapter nut; or through the improvement of the rod and the anchor head, the anchor rod and the variable diameter steel cage, the fixed diameter steel cage and the pocket become an organic whole.
可根据需要在变直径钢筋笼内设置注浆管,或外设注浆管,变直径钢筋笼扩大头锚杆桩骨架体系与混凝土、水泥浆或水泥砂浆包裹并凝结最终成桩。A grouting pipe can be set in the variable diameter steel cage according to needs, or a grouting pipe can be externally installed, and the enlarged head anchor rod pile skeleton system of the variable diameter steel cage is wrapped with concrete, cement slurry or cement mortar and condensed to form a pile.
通过科学的方法,对其在地下存在的状态、工程安全性能、质量状况等,可以进行全程和主要节点动态和可追溯检测,保证桩基的安全性和稳定性。Through scientific methods, the whole process and main node dynamics and traceability testing can be carried out for its underground existence status, engineering safety performance, quality status, etc., to ensure the safety and stability of the pile foundation.
①开挖桩杆上端即锚杆顶部的周围基底并清理浮浆;并在锚杆顶部周围铺施遇水膨胀止水胶条;① Excavate the upper end of the pile rod, namely the surrounding base of the top of the anchor rod, and clean the floating slurry; and apply water-swelling water-stop rubber strip around the top of the anchor rod;
②锚杆顶部的周围基底上浇筑混凝土垫层;②Pour a concrete cushion on the surrounding base of the top of the anchor rod;
③螺纹钢筋上至底板上层钢筋底部用法兰螺母固定(而不需要螺母),不需要再施加;并在基底上浇筑带钢筋的基础底板。③Flange nuts are used to fix the threaded steel bars up to the bottom of the upper rebar of the bottom plate (without nuts), no need to apply; and the foundation bottom plate with steel bars is poured on the base.
④若预制构件为多根钢筋,则用相应数量开孔钢板做锚板,拧上螺母固定,再浇筑底板混凝土。④ If the prefabricated component is multiple steel bars, use the corresponding number of steel plates with holes as anchor plates, screw on nuts to fix them, and then pour the bottom plate concrete.
所述的承压型直通或变直径钢筋笼扩体锚杆工法,承压型直通或变直径钢筋笼扩体锚杆锚固段土体蠕变变形的控制法,在对扩大头部分高压注浆或灌注混凝土施工,待强度达到设计要后,进行对锚杆整体施加外力拉拔,使扩大头顶部土体产生挤压,从而减小锚杆工作状态下的锚杆杆件和土体蠕变变形。The pressure-bearing straight-through or variable-diameter steel cage expansion bolt construction method, the pressure-bearing straight-through or variable-diameter steel cage expansion bolt anchoring section soil creep deformation control method, in the expansion head part of the high-pressure grouting Or pouring concrete construction, after the strength reaches the design requirements, apply external force to the anchor rod as a whole to squeeze the soil at the top of the enlarged head, thereby reducing the anchor rod members and soil creep under the working state of the anchor rod Deformed.
施加的大小:根据地下室抗浮计算时,计算的上浮水头放大1.05倍;抗浮计算锚杆的安全系数取K=2.0;因此锚杆施加的小于锚杆的特征值,且要大于常水位时所需要的锚杆抗浮力,综合考虑取承载力特征值的50%。Applied size: according to the anti-floating calculation of the basement, the calculated floating head is magnified by 1.05 times; the safety factor of the anti-floating calculation anchor rod is K=2.0; therefore, the applied value of the anchor rod is less than the characteristic value of the anchor rod and greater than the normal water level The required buoyancy resistance of the anchor rod is considered to be 50% of the characteristic value of the bearing capacity.
在制备锚杆件时,不同的直径具有不同的施加的(伸长不同,相对伸长系数不同)。In the preparation of anchor members, different diameters have different applied (different elongation, different relative elongation coefficient).
参照本申请人的在先申请变径钢筋笼,包括轴向杆、若干竖筋、两组若干筋条、第一和第二两个圈状固定器,第一与第二两个圈状固定器滑动在轴向杆杆上,第一和第二两个圈状固定器各固定一组与竖筋数相同的筋条,每根竖筋的上下两处分别有第一组和第二组的一根筋条与这根竖筋活络连接,若干竖筋环绕轴向杆,至少有一个圈状固定器在轴向杆杆上设有定位装置;竖筋外周设有箍筋,箍筋且与竖筋或轴向杆设有固定点,箍筋为绳状;轴向杆上设有轴向弹簧,并受到限位器、限位板条或约束绳、约束销的限制;环状箍筋约束收紧时是未使用状态(用于放入钻孔),箍筋的端部设有释放装置。箍筋也可以是螺旋弹簧状。旋箍筋的材质:玻璃纤维、芳纶纤维、碳纤维、石墨烯、碳元素相关的材料及其复合材料等。Refer to the applicant’s earlier application for a reducing steel cage, including axial rods, several vertical bars, two groups of several bars, the first and second two ring-shaped fixers, the first and second two ring-shaped fixation The device slides on the axial rod, the first and second two ring-shaped retainers each fix a group of ribs with the same number of vertical ribs, and each vertical rib has a first group and a second group at the upper and lower positions. One of the ribs is flexibly connected to this vertical rib, several vertical ribs surround the axial rod, and at least one ring-shaped fixator is provided with a positioning device on the axial rod; the vertical ribs are provided with stirrups, and the There are fixed points with vertical bars or axial rods, and the stirrups are rope-shaped; the axial rods are equipped with axial springs, and are restricted by stoppers, stop bars or restraint ropes and restraint pins; ring hoop When the ribs are constrained and tightened, they are in an unused state (used to be placed in a hole), and the ends of the stirrups are provided with a release device. The stirrup may also be in the shape of a coil spring. Stirrup materials: glass fiber, aramid fiber, carbon fiber, graphene, carbon-related materials and their composite materials, etc.
箍筋为环状箍筋或多道绕制在竖筋外围的紧箍绳索,环状箍筋收紧时是未使用状态时轴向杆上的轴向弹簧是压簧或拉簧。压簧释放后伸长,拉簧释放后则收缩。The stirrup is a ring-shaped stirrup or a plurality of ropes wound around the vertical ribs. When the ring-shaped stirrup is not in use, the axial spring on the axial rod is a compression spring or a tension spring. When the compression spring is released, it stretches, and when the tension spring is released, it contracts.
压簧或拉簧限位装置是限位器、限位板条或约束绳、约束销;环状箍筋打开后,即约束打开,轴向弹簧是压簧或拉簧本来的应力状态释放,并受到限位器、限位板条或约束绳、约束销的限制;即四周竖筋水平侧向打开:比自动伞的在主轴上限位器的打开方式结构简单且使用,环状箍筋采用软钢绳或较硬弹簧均可,亦可作为钢筋笼的的一个成份。Compression spring or tension spring limit device is a limiter, limit slat or restraint rope, and restraint pin; when the ring stirrup is opened, the constraint is opened, and the axial spring is the original stress state of the compression spring or tension spring. And it is restricted by the limiter, the limit slat or the restraint rope, and the restraint pin; that is, the surrounding vertical ribs are opened horizontally and laterally: Compared with the opening method of the automatic umbrella in the spindle limiter, the structure is simpler and used, and the ring stirrup adopts Either a soft steel rope or a harder spring can be used as a component of the steel cage.
竖筋、螺旋箍筋的立体几何形态包括:立方体长方体圆柱圆台棱柱棱台圆锥棱锥等;平面横截面的形状是:正方形长方形三角形四边形平行四边形菱形梯形圆扇形弓形圆环等;竖筋、螺旋箍筋的规格、型号、形状、数量、尺寸、材料,各项参数随不同项目地质条件进行调整;筋条与竖筋活络连接的方式:圈状固定器分别通过销轴3-1、销轴支架(U型固定支架)3-2将筋条连接到竖筋。竖筋筋条的根数不必多,一般5-12根即可。The three-dimensional geometric forms of vertical ribs and spiral stirrups include: cube cuboid cylindrical truncated prism prism conical pyramid, etc.; the shape of the plane cross section is: square rectangle triangle quadrilateral parallelogram rhombic trapezoid circular sector arc ring, etc.; vertical ribs, spiral hoop The specification, model, shape, quantity, size, material of the ribs, and various parameters are adjusted according to the geological conditions of different projects; the way the ribs and the vertical ribs are actively connected: the ring-shaped fixer is respectively through the pin 3-1 and the pin bracket (U-shaped fixing bracket) 3-2 Connect the ribs to the vertical ribs. The number of vertical ribs does not need to be many, generally 5-12.
变径钢筋笼:圆环或环板的直径与钻孔相当或略小于钻孔直径;筋条可以是直线的或是弯曲的。变径钢筋笼的圈状固定器均可以环形圈为基本结构,在轴向杆上进行滑动。Reducing steel cage: the diameter of the ring or ring plate is equivalent to or slightly smaller than the diameter of the drilled hole; the ribs can be straight or curved. The ring-shaped fixtures of the variable-diameter steel cage can all have an annular ring as the basic structure and slide on the axial rod.
筋条为弹性筋条时,环状箍筋在竖筋箍住内周筋条。竖筋与箍筋在扩体端同步展开、贴紧、形成钢筋笼。箍筋弹性箍住与释放结构有多种,如箍筋端部制备成轴销或轴孔的结构最为常见,轴销时插入某固定孔,轴孔时则另有销轴固定箍筋的端部。且需要上便于释放,即变径钢筋笼在扩体孔内张开。When the ribs are elastic ribs, the ring-shaped stirrups enclose the inner circumferential ribs at the vertical ribs. The vertical reinforcement and the stirrup are synchronously expanded and tightly attached at the expansion end to form a reinforcement cage. There are many types of elastic hoop and release structures for stirrups. For example, the structure where the ends of the stirrups are prepared as shaft pins or shaft holes is the most common. When the shaft pin is inserted into a fixed hole, when the shaft hole is used, there is another pin for fixing the stirrup. unit. And it needs to be easy to release, that is, the variable diameter steel cage is opened in the expansion hole.
筋条为弹性筋条时,筋条在应力下收缩,且被箍筋限制动作的范围,箍筋释放后,则筋条应力释放后则筋条 张开,且带动竖筋张开,此种结构的圈状固定器固定在杆上,无需要固定器在杆上滑动。When the ribs are elastic ribs, the ribs contract under stress and the range of motion is restricted by the stirrups. After the stirrups are released, the ribs will open after the stress is released and the vertical ribs will be opened. The ring-shaped holder of the structure is fixed on the rod, and there is no need for the holder to slide on the rod.
环状箍筋释放后变直径,直径扩大成环状箍筋原先松弛状态,即直径较小环状箍筋释放到锚杆的扩体端后,环状箍筋直径放大至设计要求(如典型的一款是从直径不到200mm扩大到-400mm)。After the ring stirrup is released, the diameter changes, and the diameter is expanded to the original relaxed state of the ring stirrup, that is, after the smaller diameter ring stirrup is released to the enlarged end of the anchor rod, the diameter of the ring stirrup is enlarged to the design requirements (such as typical One is expanded from less than 200mm in diameter to -400mm).
变径钢筋笼的制备方法:3D打印成型、注塑成型、人工机械组装焊接等方法。竖筋外周设有环状箍筋,环状箍筋且与竖筋设有固定点,且为弹性材质的环状箍筋;环状箍筋收紧是未使用状态,箍筋的端部设有释放装置;环状箍筋是螺旋弹簧或普通钢丝绳或炭纤维绳子均可。The preparation method of the variable diameter steel cage: 3D printing molding, injection molding, manual mechanical assembly welding and other methods. The outer circumference of the vertical reinforcement is provided with a ring-shaped stirrup, which has a fixed point with the vertical reinforcement, and is a ring-shaped stirrup of elastic material; the ring-shaped stirrup is in an unused state, and the end of the stirrup is There is a release device; the ring stirrups can be coil springs or ordinary steel wire ropes or carbon fiber ropes.
所述释放装置的结构为:箍筋端部制备成轴销或轴孔的结构,当箍筋端部为轴销时插入一固定孔,当箍筋端部为轴孔时则另有销轴固定箍筋的端部。The structure of the release device is: the end of the stirrup is prepared into a shaft pin or a shaft hole structure, when the end of the stirrup is a shaft pin, a fixed hole is inserted, and when the end of the stirrup is a shaft hole, there is another pin shaft Fix the ends of the stirrups.
变直径钢筋笼设有约束和释放装置,采用包括但不限于约束绳、约束锁、约束销、约束罩等约束方式使钢筋笼直径处于缩小约束状态,采用包括但不限于释放弹簧、弹簧片、弹性球、气囊、配重、旋转、轴向杆件伸缩、轴向干加套管伸缩、施加外力、电动、电子遥控等方式展开释放,使钢筋笼直径可变。The variable diameter steel cage is equipped with restraint and release devices. The restraint methods including but not limited to restraint ropes, restraint locks, restraint pins, restraint covers are used to reduce the diameter of the steel cage in a restrained state, including but not limited to release springs, spring sheets, Elastic ball, airbag, counterweight, rotation, axial rod expansion, axial expansion and contraction of the sleeve, application of external force, electric, electronic remote control and other methods to expand and release, so that the diameter of the steel cage can be changed.
轴向杆件加套管伸缩,设置在套管上的圆盘或花件与活络机制,通过重力、或外加动力等方式,使钢筋笼的直径释放展开。The axial rods and sleeves expand and contract, and the discs or flower pieces and the active mechanism arranged on the sleeves release and expand the diameter of the steel cage by means of gravity or external power.
筋条为弹簧是一种选择,也可以是弹簧钢片,被折叠变形后受到应力,在箍筋的约束下整个一束竖筋均被收起,箍筋放开后弹簧钢片折叠变形应力释放撑开竖筋;取代弹簧钢片的还可以是各种材质的弹力棒,包括橡胶棒、碳纤弹力棒等,参见在本申请人在先申请。The rib is a spring is a choice, or it can be a spring steel sheet, which is stressed after being folded and deformed. Under the restraint of the stirrup, the entire bunch of vertical ribs are retracted. After the stirrup is released, the spring steel sheet is folded and deformed. Release the vertical ribs; instead of the spring steel sheets, elastic rods of various materials can be used, including rubber rods, carbon fiber elastic rods, etc., see the applicant’s earlier application.
本发明的承压变径钢筋笼扩体锚杆,变径钢筋笼在置于扩体段时展开释放,在变径钢筋笼上注浆或注入混凝土成为锚杆,变径钢筋笼成为锚杆的骨架。In the pressure-bearing variable-diameter steel cage expansion anchor rod of the present invention, the variable-diameter steel cage is deployed and released when placed in the expansion section, grouting or concrete is injected into the variable-diameter steel cage to become an anchor rod, and the variable-diameter steel cage becomes an anchor rod Skeleton.
本发明的工法应用:旋喷桩机钻进至设计深度→高压旋喷施工或机械扩孔施工→下锚头→打开锚头中扩大机构,将钢筋笼打开至设计尺寸→高压注浆或灌注混凝土。The construction method of the present invention is applied: the jet grouting pile machine is drilled to the design depth → high pressure jet grouting construction or mechanical reaming construction → lowering the anchor head → opening the expansion mechanism in the anchor head, opening the steel cage to the design size → high pressure grouting or pouring Concrete.
变径钢筋笼;普通钢筋经特殊加工处理后,成为弹性钢筋;用处理后的弹性钢筋加工成减小直径的箍筋(通过紧绕或收紧方式箍住整个竖筋或筋条);即通过紧绕或收紧方式箍住整个竖筋或筋条,竖筋外周设有环状箍筋,环状箍筋且与竖筋设有固定点(钢丝捆扎最为常用)。Reduced-diameter steel cage; ordinary steel bars are specially processed to become elastic steel bars; the processed elastic steel bars are processed into reduced-diameter stirrups (the entire vertical bar or bar is hooped by tight winding or tightening); that is, The entire vertical bar or bar is hooped by tightly winding or tightening. The outer circumference of the vertical bar is provided with a ring-shaped stirrup, and the ring-shaped stirrup is provided with a fixed point with the vertical bar (wire bundling is most commonly used).
典型的成品中:钢筋笼箍筋直径≤200mm(与实际形成的钻孔有关的参数,不同钻孔可以有不同规格的直径钢筋笼(箍筋)),置于锚杆扩体段后,打开钢筋笼中的约束机构,箍筋直径达到400mm左右的直径;变直径钢筋笼约束时的尺寸和展开后的尺寸以及钢筋笼的高度可依据工程的需要进行确定。In a typical finished product: steel cage stirrup diameter ≤ 200mm (parameters related to the actual drilled hole, different drill holes can have different specifications of the steel cage (stirrup)), placed after the anchor rod expansion section, open The restraint mechanism in the steel cage, the diameter of the stirrups can reach about 400mm; the size of the variable-diameter steel cage when restrained, the size after deployment, and the height of the steel cage can be determined according to the needs of the project.
竖筋或筋条在机构作用下展开紧贴箍筋至不能展开止;在扩体段底部即锚杆的底部用锚垫板(锚垫板为环板)将锚杆的杆体与扩大头机械连接。Under the action of the mechanism, the vertical ribs or ribs are unfolded and tightly attached to the stirrups until they cannot be deployed; at the bottom of the expanded section, that is, the bottom of the anchor rod, use an anchor pad (an anchor pad is a ring plate) to connect the rod body of the anchor rod to the enlarged head. connection.
以上所述仅为本发明的实施例,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均以包含在本发明的保护范围之内。The above are only the embodiments of the present invention and are not used to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention are all included in the protection scope of the present invention. .

Claims (12)

  1. 一种全装配承压型变直径钢筋笼扩大头锚杆桩系统,其特征是,包括变直径钢筋笼,变直径钢筋笼设有约束和释放装置;锚杆杆件;钢筋连接器、限位器为限位螺母,限位螺母为开放式或封闭式结构,扩大头中的变直径钢筋笼与轴向杆被限位螺母在锚杆杆件上;变直径钢筋笼、锚杆杆件、钢筋连接器构成变直径钢筋笼扩大头锚杆桩骨架体系;锚杆杆件采用精轧螺纹钢筋、钢绞线、预应力拉杆,钢筋连接器用于锚杆杆件的长度连接;锚杆杆件顶部与建筑物底板锚固、锚杆杆件底部与扩大头钢筋笼即变直径钢筋笼锁定锚固;扩大头变直径钢筋笼、锚杆杆件、锚固件与混凝土、水泥砂浆或水泥浆结晶体进行结合,从而形成变直径钢筋笼扩大头锚杆桩成桩系统;变直径钢筋笼扩大头锚杆桩骨架体系是全装配式。A fully assembled pressure-bearing variable-diameter steel cage enlarged head anchor pile system, which is characterized by including variable-diameter steel cages, the variable-diameter steel cages are equipped with restraint and release devices; anchor rods; steel connectors and limiters The device is a limit nut, the limit nut is an open or closed structure, the variable diameter steel cage and the axial rod in the enlarged head are fixed on the anchor rod by the limit nut; the variable diameter steel cage, the anchor rod, The rebar connector constitutes a variable-diameter steel cage enlarged head anchor pile skeleton system; the anchor rod adopts fine-rolled rebar, steel strand, and prestressed tie rod, and the rebar connector is used for the length connection of the anchor rod; The top and the bottom of the building are anchored, the bottom of the anchor rod and the enlarged head steel cage are locked and anchored; the enlarged head variable diameter steel cage, anchor rods, anchors are combined with concrete, cement mortar or cement slurry crystals , So as to form a variable-diameter steel cage enlarged head anchor pile pile system; the variable-diameter steel cage enlarged head anchor pile framework system is fully assembled.
  2. 根据权利要求1所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,轴向杆上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构或其他传统锚固方式。法兰螺母加井字形钢筋网组合结构或其他传统锚固方式与底板、围檩、梁进行锚固。The variable-diameter steel cage enlarged head anchor pile system according to claim 1, wherein the fixing layer at the upper end of the axial rod adopts a three-piece high-strength nut anchoring form, a three-way high-strength nut or flange anchoring structure or other traditional Anchorage method. Flange nut and tic-shaped steel mesh combination structure or other traditional anchoring methods are used to anchor the bottom plate, purlin and beam
  3. 根据权利要求1所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,扩大头钢筋笼即变径钢筋笼包括钢筋主筋与配置钢筋配筋材料,即包括轴向杆或主筋、圆环或环板和若干竖筋、箍筋、若干筋条、圈状固定器,圆环或环板,承压底板与轴向杆垂直,若干竖筋的一端在圆环或环板在均匀固定,每根竖筋的另一端或中部均连接一根筋条的一端,若干竖筋环绕轴向杆,筋条的另一端接到圈状固定器,圈状固定器在轴向杆杆上固定或滑动;采用可释放弹簧使钢筋笼变直径。The variable-diameter steel cage enlarged head anchor pile system according to claim 1, wherein the enlarged-head steel cage, that is, the variable-diameter steel cage includes the main steel reinforcement and the configuration of the steel reinforcement material, that is, the axial rod or the main reinforcement, the round Ring or ring plate and several vertical ribs, stirrups, several ribs, ring-shaped retainers, ring or ring plate, the pressure-bearing bottom plate is perpendicular to the axial rod, and one end of the several vertical ribs is evenly fixed on the ring or ring plate , The other end or middle of each vertical rib is connected to one end of a rib, a number of vertical ribs surround the axial rod, the other end of the rib is connected to the ring-shaped fixer, and the ring-shaped fixer is fixed on the axial rod. Or sliding; using releasable springs to change the diameter of the steel cage.
  4. 根据权利要求3所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,扩大头钢筋笼若干竖筋外周设有活络连接的弹性箍筋;采用释放弹性箍筋的方式释放变直径钢筋笼,轴向杆即钢筋主筋与配置钢筋配筋材料一并由混凝土或水泥砂包裹并凝结。The variable-diameter steel cage enlarged head anchor pile system according to claim 3, characterized in that the outer periphery of several vertical bars of the enlarged-head steel cage is provided with flexible connected elastic stirrups; the variable diameter steel bar is released by releasing the elastic stirrups The cage, the axial rod, that is, the main reinforcement of the steel bar and the reinforcement material of the configuration steel are wrapped and condensed by concrete or cement sand.
  5. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,变直径钢筋笼外周包裹囊袋。外周可包裹、设置囊袋、防护罩、导向对中支架、或加装滑轮(板)。The variable-diameter steel cage enlarged head anchor pile system according to any one of claims 1-4, wherein the outer periphery of the variable-diameter steel cage is wrapped with a pocket. The outer circumference can be wrapped, equipped with a bag, a protective cover, a guide centering bracket, or a pulley (plate) can be added.
  6. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,所述锚杆杆件的前端,设有与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接或复合的装置,形成锚杆桩应用体系。The variable diameter steel cage enlarged head anchor pile system according to any one of claims 1-4, wherein the front end of the anchor rod is provided with a variable diameter steel cage, a fixed diameter steel cage, and a pocket Or other anchor heads to connect or compound devices to form an anchor pile application system.
  7. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,锚杆杆件的数量,采用1根或若干根精轧高强螺纹钢筋或普通螺纹钢或钢绞线;或进一步的变直径钢筋笼扩大头短桩与传统的灌注桩、预制桩、钢桩、竹节桩等结合,形成既可抗抜又可抗压的复合功能的桩。The variable diameter steel cage enlarged head anchor pile system according to any one of claims 1-4, characterized in that the number of anchor rods is one or several fine-rolled high-strength rebars or ordinary rebars or steel Stranded wire; or further short piles with variable diameter reinforced cage expansion heads are combined with traditional cast-in-place piles, precast piles, steel piles, bamboo piles, etc. to form a pile with composite functions that can resist both squashing and compression.
  8. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,变直径钢筋笼扩大头锚杆桩体系中的钢筋骨架的各个组成部分是装配式的;锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头进行连接时,采取在锚杆杆件的下端,预留与变直径钢筋笼、固定直径钢筋笼、囊袋或其他锚头的长度相适应钢筋,在锚头底部分与锚垫板进行锚固连接,或留有适当的钢筋长度,和成品锚杆 头顶部用衔接螺母连接;或通过改进杆件和锚头,使锚杆杆件与变直径钢筋笼、固定直径钢筋笼、囊袋成为一个有机整体。The variable-diameter steel cage enlarged head anchor pile system according to any one of claims 1 to 4, characterized in that the various components of the steel skeleton in the variable-diameter steel cage enlarged head anchor pile system are assembled; When connecting rods with variable-diameter steel cages, fixed-diameter steel cages, pockets or other anchor heads, take the lower end of the anchor rods and reserve them for the variable-diameter steel cages, fixed-diameter steel cages, pockets or other anchors. The length of the anchor head is suitable for the steel bar, and the anchor head is connected to the anchor plate at the bottom of the anchor head, or the appropriate length of the steel bar is reserved, and the top of the finished anchor head is connected with a coupling nut; or by improving the rod and the anchor head, The anchor rod and the variable-diameter steel cage, the fixed-diameter steel cage and the pocket become an organic whole.
  9. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,锚杆杆件顶端,拉杆杆件上端的固定层采用高强螺母三件套锚固形式、三通高强螺母或法兰锚固结构均采用高强螺母;基本结构锚杆顶部通过套住锚杆杆件的法兰螺母固定,或通过锚板并用螺母固定,或锚板与固定螺母一体化,基础底板连接;锚杆杆件底端通用螺母与承压板锚固,或承压板与固定螺母一体化,形成变直径钢筋笼锚杆桩的钢筋骨架体系。According to the variable diameter steel cage enlarged head anchor pile system according to any one of claims 1-4, the fixing layer at the top of the anchor rod and the upper end of the tie rod adopts three-piece high-strength nut anchoring form, three-way high-strength nut or method The flange anchoring structure adopts high-strength nuts; the top of the basic structure anchor rod is fixed by the flange nut covering the anchor rod member, or by the anchor plate and fixed with the nut, or the anchor plate and the fixed nut are integrated, and the foundation bottom plate is connected; the anchor rod The universal nut at the bottom of the piece is anchored with the pressure-bearing plate, or the pressure-bearing plate and the fixed nut are integrated to form a steel frame system of variable-diameter steel cage anchor piles.
  10. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,变直径钢筋笼外周箍筋是网格状的,外周可包裹或设置囊袋、防护罩、导向帽、导向对中支架、或加装滑轮(板);根据需要在变直径钢筋笼内设置注浆管,或外设注浆管;变直径钢筋笼扩大头锚杆桩骨架体系是全装配式的,根据工程需要可选择设置“笼中套笼”或“串笼”的方式,变直径钢筋笼扩大头锚杆桩骨架体系与混凝土、水泥浆或水泥砂浆包裹并凝结最终成桩。The variable-diameter steel cage enlarged head anchor pile system according to any one of claims 1 to 4, wherein the outer circumferential stirrup of the variable-diameter steel cage is grid-shaped, and the outer circumference can be wrapped or provided with a pocket, a protective cover, Guide cap, guide centering bracket, or add pulley (plate); install grouting pipe in variable diameter steel cage or external grouting pipe according to need; variable diameter steel cage enlarged head anchor rod pile skeleton system is fully assembled According to the needs of the project, the method of "cage in cage" or "cage in series" can be selected. The skeleton system of the anchor pile with the enlarged head of the variable-diameter reinforced cage is wrapped with concrete, cement slurry or cement mortar and condensed to form a pile.
  11. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,扩大头钢筋笼即变径钢筋笼包括钢筋主筋、箍筋,箍筋可以是弹性的也可以是柔性的;以及其他配置钢筋笼的配筋材料,包括轴向杆、圆环花件或圈状固定器和若干竖筋、若干筋条、承压底板与轴向杆垂直,若干竖筋环绕轴向杆,若干竖筋围绕圆环花件或圈状固定器及承压底板边沿上均匀约束固定,每根竖筋的另一端或中部均活络地连接一根筋条的一端,筋条的另一端活络地接到圈状固定器或圆环花件,圈状固定器或圆环花件在轴向杆杆上固定或滑动,形成钢筋笼的活络机制;变直径钢筋笼设有约束和释放装置,选择采用包括但不限于约束绳、约束锁、约束销、约束罩、电子锁等约束方式使钢筋笼直径处于缩小约束状态,选择采用包括但不限于释放弹簧、弹簧片、弹性球、弹性体(如:牛皮筋等)、气囊、配重、旋转、轴向杆件伸缩、轴向杆件外加套管伸缩、施加外力、电动、电子遥控等方式展开释放;亦可以通过简化、选配、替代、优化组合活络机构、约束和释放装置的方法,使钢筋笼直径可变;根据工程需要可选择设置不同的变直径钢筋笼配筋的材质、规格、形状、结构、数量、尺寸的大小,且变直径钢筋笼可形成多种不同特征的立体几何形状,包括但不限于,如圆柱体、圆锥体、球体、正方体、长方体、竹节体、多面体、多节体等等The variable-diameter steel cage enlarged head anchor pile system according to any one of claims 1-4, wherein the enlarged-head steel cage, that is, the variable-diameter steel cage includes a main steel bar and a stirrup, and the stirrup can be elastic or It is flexible; and other reinforcement materials equipped with steel cages, including axial rods, circular flower pieces or ring-shaped fixtures, and several vertical ribs, several ribs, the pressure-bearing bottom plate is perpendicular to the axial rod, and several vertical ribs surround Axial rods, a number of vertical ribs are evenly restrained and fixed on the edge of the pressure-bearing bottom plate around the ring-shaped fixture or the ring-shaped fixture. The other end or middle of each vertical rib is actively connected to one end of a rib. The other end is flexibly connected to the ring-shaped retainer or ring flower, which is fixed or slid on the axial rod to form an active mechanism of the steel cage; the variable-diameter steel cage is equipped with restraint and The release device is selected to use restraint methods including but not limited to restraint rope, restraint lock, restraint pin, restraint cover, electronic lock, etc. to make the diameter of the steel cage in a reduced restraint state. The choices include but not limited to release spring, spring leaf, elastic ball, Elastomers (such as cowhide tendons, etc.), airbags, counterweights, rotation, axial rod expansion and contraction, axial rod expansion and contraction with sleeves, application of external force, electric, electronic remote control, etc. are deployed and released; it can also be simplified and selected The method of arranging, replacing, and optimizing the combination of the active mechanism, restraint and release device to make the diameter of the steel cage variable; according to the needs of the project, you can choose to set different materials, specifications, shapes, structures, quantities, and sizes of the reinforcement of the variable diameter steel cage The size and variable diameter steel cage can form a variety of three-dimensional geometric shapes with different characteristics, including but not limited to, such as cylinder, cone, sphere, cube, cuboid, bamboo joint, polyhedron, multi-section, etc.
  12. 根据权利要求1-4之一所述的变直径钢筋笼扩大头锚杆桩系统,其特征是,可通过5G、互联网、区块链、大数据、二维码、三维码等科学的技术和方法,对其在地下存在的状态、工程安全性能、质量状况等,可以进行全程和主要节点动态和可追溯识别和检测,保证桩基的安全性和稳定性。The variable-diameter steel cage enlarged head anchor pile system according to any one of claims 1-4, characterized in that it can be used through 5G, Internet, blockchain, big data, two-dimensional code, three-dimensional code and other scientific technologies and In this way, the status of underground existence, engineering safety performance, quality status, etc., can be dynamically and traceably identified and detected throughout the entire process and main nodes to ensure the safety and stability of the pile foundation.
PCT/CN2020/086227 2019-05-28 2020-04-22 Full-assembly pressure-bearing type variable-diameter steel cage expansion head anchor rod pile system WO2020238501A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201910450390.5A CN110344405A (en) 2019-05-28 2019-05-28 A kind of variable diameters steel reinforcement cage enlarged footing anchor pile system
CN201910450390.5 2019-05-28
CN202010017575.XA CN111005376A (en) 2019-05-28 2020-01-08 Full-assembly pressure-bearing type variable-diameter steel reinforcement cage enlarged footing anchor pile system
CN202010017575.X 2020-01-08

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CN110344405A (en) * 2019-05-28 2019-10-18 江苏景源万河环境科技有限公司 A kind of variable diameters steel reinforcement cage enlarged footing anchor pile system
CN111676967B (en) * 2020-06-19 2021-07-02 中建富林集团有限公司 Construction method for pile-anchor support of spiral cage core anchor rod

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CN107587506A (en) * 2017-09-08 2018-01-16 江苏景源万河环境科技有限公司 A kind of precast prestressed anchor pole rod member and construction
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CN204151781U (en) * 2014-09-23 2015-02-11 张百全 A kind of end carrying anti-float anchor rod assembly
KR101551189B1 (en) * 2015-02-25 2015-09-08 주식회사 알지오기술 Construction method comprising a reinforcing member and extends
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CN110344405A (en) * 2019-05-28 2019-10-18 江苏景源万河环境科技有限公司 A kind of variable diameters steel reinforcement cage enlarged footing anchor pile system
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