WO2021004417A1 - 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法 - Google Patents

用于桥塔横向有粘结预应力钢棒锚固组件及施工方法 Download PDF

Info

Publication number
WO2021004417A1
WO2021004417A1 PCT/CN2020/100314 CN2020100314W WO2021004417A1 WO 2021004417 A1 WO2021004417 A1 WO 2021004417A1 CN 2020100314 W CN2020100314 W CN 2020100314W WO 2021004417 A1 WO2021004417 A1 WO 2021004417A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel
anchor
positioning
grouting
steel rod
Prior art date
Application number
PCT/CN2020/100314
Other languages
English (en)
French (fr)
Inventor
徐灿超
饶淇
金壹泽
贺凌熹
王良波
张祯
刘炬
张子维
李选
周圆
黄�俊
冯艳玲
陈敏
胡阳
张冉俊雄
Original Assignee
中建三局第二建设工程有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910611094.9A external-priority patent/CN110396927A/zh
Priority claimed from CN201921061693.XU external-priority patent/CN210712560U/zh
Application filed by 中建三局第二建设工程有限责任公司 filed Critical 中建三局第二建设工程有限责任公司
Publication of WO2021004417A1 publication Critical patent/WO2021004417A1/zh

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges

Definitions

  • the invention belongs to the field of bridge engineering, and mainly relates to a transversely bonded prestressed steel rod anchoring component and a construction method for bridge towers, and is suitable for the transverse prestressed construction of bridge towers.
  • the present invention provides a transversely bonded prestressed steel rod anchoring assembly and a construction method for the bridge tower.
  • the anchoring assembly is pre-installed to accurately position the Stress steel rod
  • the anchoring component of the present invention has the advantages of convenient operation, high construction accuracy, strong consistency of tensile stress and elongation, etc. It adopts high-strength nuts for shaping processing, one-time precise tensioning, double-layer guarantee, and effective It solves the problems of large shrinkage of traditional clip anchors, large stress loss, and complicated tension construction.
  • Standard fine thread screw locking and anchoring greatly improves the anchoring performance of bonded pre-stressed steel rods; the front extension rod is stretched, and the high-strength rubber hose is connected in series with one grouting, streamlining the pre-stress construction process and effectively compressing the construction process cycle.
  • the anchor pads are provided with two positioning holes and A grouting hole
  • the steel plate is provided with a hole and communicated with the grouting hole
  • two positioning steel pipes are welded to the two positioning holes of the anchor pad plate
  • each positioning steel pipe penetrates a spiral rib
  • each spiral rib passes through A screw is fixed on the anchor backing plate
  • each spiral rib is connected to the anchor backing plate through a positioning steel pipe
  • the bottom of the anchor backing plate is welded to the steel plate
  • the steel plate and cover are welded on the top of the square steel pipe to form an anchor box.
  • the positioning steel pipe is a round steel pipe with a diameter of 60 mm and a thickness of 5 mm.
  • the positioning steel pipe is fully welded to the top of the anchor backing plate.
  • the spiral ribs are round steel with a diameter of 8 mm.
  • the anchor backing plate is an anchor backing plate with bonded prestressed steel rods.
  • the cross-section parameters of the square steel pipe are 250 ⁇ 150 ⁇ 12mm and the length is 150mm.
  • the steel plate is 250 ⁇ 150mm and the thickness is 12mm.
  • the construction method for the transversely bonded prestressed steel rod anchor components of the bridge tower is characterized by the following steps: the square steel pipe of each steel rod anchor component is welded and fixed with the positioning ribs during the tying process of the tower column reinforcement, and then installed Metal bellows and prestressed steel rods; after closing the mold and pouring the concrete, when the concrete of the tower column meets the requirements, use the penetrating jack to stretch the extension rods; use high-strength rubber pipes to connect all the steel rod anchoring components in series, and vacuum slurry to compress Finally, the anchor is sealed to complete the transverse prestress construction; the specific steps and methods are as follows:
  • (4)Vacuum grouting use a vacuum tube to connect with the grouting hole of the anchor plate on the top of the prestressed steel rod on the top of the tower column, and use a vacuum pump to pump grouting; use a grouting pipe and the anchor plate on the bottom of the prestressed steel rod on the bottom of the tower column The grouting hole is connected, and the grouting pump is used for grouting at the bottom; grouting can be completed when the grouting is smooth, stable and consistent.
  • the anchoring component of the present invention has the advantages of convenient operation, high construction accuracy, and strong consistency of tensile stress and elongation.
  • the high-strength nut is used for shaping processing, which effectively solves the large shrinkage and stress loss of traditional clip anchors. Problems such as cumbersome and tedious construction.
  • Figure 1 is a front view of the device
  • Figure 2 is a top view of the device
  • Figure 3 is a schematic diagram of the connection between the device and the prestressed steel bar
  • Figure 4 is a schematic diagram of the tensioning construction of the device
  • Figure 5 is a schematic diagram of the grouting construction of the device.
  • the device of the present invention includes two positioning steel pipes 1, two spiral ribs 3, an anchor backing plate 4, a square steel pipe 5, and a steel plate 6.
  • the device is characterized in that two positioning steel pipes are provided on the anchor backing plate 4.
  • the steel plate 6 is provided with a hole and communicates with the grouting hole 7.
  • Two positioning steel pipes 1 are correspondingly welded to the two positioning holes of the anchor plate 4, and each positioning steel pipe 1 penetrates inside
  • each spiral rib 3 is fixed on the anchor backing plate 4 by an M6 screw 2, and each spiral rib 3 is connected to the anchor backing plate 4 through the positioning steel pipe 1.
  • the bottom of the anchor backing plate 4 is attached to the steel plate 6 After welding, the steel plate 6 and the cover are welded on the top of the square steel pipe 5 to form an anchor box;
  • the positioning steel pipe 1 is a round steel pipe with a diameter of 60 mm and a thickness of 5 mm.
  • the positioning steel pipe 1 is fully welded to the top of the anchor backing plate 4, and a spiral rib 3 penetrates inside.
  • the spiral rib 3 is round steel with a diameter of 8 mm, which is fixed to the anchor pad 4 with M6 screws 2.
  • the anchor pad 4 is an anchor pad with bonded prestressed steel rods.
  • the cross-section parameters of the square steel pipe 5 are 250 ⁇ 150 ⁇ 12mm and the length is 150mm.
  • the steel plate 6 is 250 ⁇ 150mm and the thickness is 12mm.
  • the edge of the steel plate 6 is connected with the square steel pipe 5 by full welding.
  • a construction method for transversely bonded prestressed steel rod anchor components for bridge towers is characterized by the following steps: the square steel pipe of each steel rod anchor component 5 During the process of tying the tower column steel bars, it is welded and fixed with the positioning bars, and then the metal bellows and prestressed steel rods are installed; after the concrete is poured in the mold, when the tower column concrete meets the design requirements, use the penetrating jack to complete the extension rod tensioning ; Use high-strength rubber pipes to connect all the steel rod anchoring components in series, vacuum slurry for grouting, and finally seal the anchor to complete the transverse prestress construction; the specific steps and methods are as follows:
  • Vacuum grouting As shown in Figure 5, the vacuum tube 20 is connected to the grouting hole 7 of the top anchor plate 9 of the topmost prestressed steel rod 9 of the tower column 19, and the vacuum pump 18 is used to pump the slurry; the grouting tube 15 is used to connect The bottom layer of the tower column 19 is connected with the grouting hole 7 of the anchor pad at the bottom of the anchor pad, and the grouting pump 15 is used for grouting at the bottom; the grouting can be completed when the grouting is smooth, stable and consistent.
  • the present invention adopts high-strength nut shaping processing, one-time precise tensioning, and at the same time adopts connecting plate welding and prestressed steel rod anchor nut manual locking method, double-layer Guarantee and increase the safety factor. It has the advantages of convenient operation, high construction accuracy, and strong consistency of tensile stress and elongation. It effectively solves the problems of large shrinkage of traditional clip anchors, large stress loss, and cumbersome tensioning construction, which greatly improves the bridge structure. Service life.

Abstract

一种用于桥塔横向有粘结预应力钢棒锚固组件及施工方法，该锚固组件包括两根定位钢管（1）、两根螺旋筋（3）、锚垫板（4）、方钢管（5）、钢板（6），锚垫板（4）上设有两个定位孔及一个注浆孔（7），钢板（6）上设有孔并与注浆孔（7）相通，两根定位钢管（1）对应焊接在锚垫板（4）的两个定位孔上，每根定位钢管（1）内穿于一螺旋筋（3），每根螺旋筋（3）通过一螺丝（2）固定在锚垫板（4）上，每根螺旋筋（3）通过定位钢管（1）与锚垫板（4）相连接，锚垫板（4）底部与钢板（6）贴合焊接，钢板（6）并封盖焊接在方钢管（5）顶部形成锚盒。该施工方法具体步骤为：钢棒锚固组件及预应力定位安装；预应力钢棒张拉；预应力管道连接；真空压浆。该锚固组件操作方便、施工精度高，张拉应力及伸长量一致性强，应力损失小，张拉施工简单。

Description

用于桥塔横向有粘结预应力钢棒锚固组件及施工方法 技术领域
本发明属于桥梁工程领域，主要涉及一种用于桥塔横向有粘结预应力钢棒锚固组件及施工方法，适用于桥梁工程索塔横向预应力施工。
背景技术
在桥梁建筑中常用传统预应力产品主要有两类：钢绞线夹片锚(长远距离)和精轧螺纹钢锚(中、短距离)。钢绞线夹片锚材料回缩量大，施工应力损失较大，同时冷加工钢材延伸率较低抗震吸能性较差；而精轧螺纹钢锚的材料松弛率较高，易导致较大的预应力损失。其强度低，为满足承载力要求只能通过加大钢筋直径，造成钢材浪费。传统的精轧螺纹钢锚和钢绞线夹片锚两种锚具均有较大的施工应力损失，其横向联结的刚度和稳定性影响了桥梁的耐久性和可靠性。
发明内容
本发明为了克服上述现有技术存在的问题及缺点，提供一种用于桥塔横向有粘结预应力钢棒锚固组件及施工方法，在桥塔施工中，预先安装该锚固组件，精准定位预应力钢棒，本发明中的锚固组件具有操作方便、施工精度高，张拉应力及伸长量一致性强等优势，采用高强度螺母定型化加工，一次性精确张拉，双层保障，有效解决了传统夹片锚回缩量较大、应力损失大，张拉施工繁琐等问题。标准细牙螺纹旋合锁紧锚固，大大提高了有粘结预应力钢棒的锚固性能；前端引伸杆张拉，高强橡胶软管串联一次压浆，精简预应力施工工艺、有效压缩了施工流程周期。
本发明实现的技术方案是：
用于桥塔横向有粘结预应力钢棒锚固组件，包括两根定位钢管、两根螺旋筋、锚垫板、方钢管、钢板，其特征在于：锚垫板上设有两个定位孔及一个注浆孔，钢板上设有孔并与注浆孔相通，两根定位钢管对应焊接在锚垫板的两个定位孔上，每根定位钢管内穿于一螺旋筋，每根螺旋筋通过一螺丝固定在锚垫板上，每根螺旋筋通过定位钢管与锚垫板相连接，锚垫板底部与钢板贴合焊接，钢板并封盖焊接在方钢管顶部形成锚盒。
所述的定位钢管为直径60mm，厚度为5mm圆钢管。
所述的定位钢管与锚垫板顶部满焊。
所述的螺旋筋为直径8mm圆钢。
所述的锚垫板为有粘结预应力钢棒配套锚垫板。
所述的方钢管截面参数为250×150×12mm，长150mm。
所述的钢板为250×150mm，厚度为12mm。
所述的钢板边缘与方钢管连接采用满焊。
用于桥塔横向有粘结预应力钢棒锚固组件的施工方法，其特征在于按以下步骤进行：每个钢棒锚固组件的方钢管在塔柱钢筋绑扎过程中与定位筋焊接固定，再安装金属波纹管及预应力钢棒；合模浇筑混凝土后，待塔柱混凝土达到要求后使用穿心式千斤顶通过引伸杆张拉完成；使用高强橡胶管串联所有钢棒锚固组件，真空吸浆进行压浆，最后封锚完成横向预应力施工；具体步骤及方法以下：
(1)钢棒锚固组件及预应力定位安装：每个钢棒锚固组件的方钢管在塔柱钢筋绑扎过程中与定位筋焊接固定，金属波纹管两端与两侧的定位钢管连接封闭，再在有粘结预应力钢棒配套锚垫板上安装有粘结预应力钢棒及垫片，拧紧锚固螺母；
(2)预应力钢棒张拉：在混凝土强度达到设计要求后开始张拉，张拉端通过引伸杆与预应力钢棒端头丝口连接，安装穿心式千斤顶，锁紧锚固螺母；采用单支单段张拉方式张拉完成；
(3)预应力管道连接：张拉完成后，使用高强橡胶管串联纵向单列锚垫板，保证注浆孔密闭性；
(4)真空压浆：使用抽真空管与塔柱最顶层预应力钢棒顶部锚垫板注浆孔连接，使用真空泵抽浆；使用压浆管与塔柱最底层预应力钢棒底部锚垫板注浆孔连接，采用压浆泵在底部进行压浆；当出浆流畅、稳定且稠度一致时即可完成注浆。
本发明中的锚固组件具有操作方便、施工精度高，张拉应力及伸长量一致性强等优势，采用高强度螺母定型化加工，有效解决了传统夹片锚回缩量较大、应力损失大，张拉施工繁琐等问题。
附图说明
图1为本装置正视图；
图2为本装置俯视图；
图3为本装置与预应力钢棒的连接示意图；
图4为本装置张拉施工示意图；
图5为本装置压浆施工示意图。
具体实施方式
下面结合附图对本发明进行详细的说明：
如图1、图2所示，本发明的装置包括两根定位钢管1、两根螺旋筋3、锚垫板4、方钢管5、钢板6，其特征在于：锚垫板4上设有两个定位孔及一个注浆孔7，钢板6上设有孔并与注浆孔7相通，两根定位钢管1对应焊接在锚垫板4的两个定位孔上，每根定位钢管1内穿于一螺旋筋3，每根螺旋筋3通过一M6螺丝2固定在锚垫板4上，每根螺旋筋3通过定位钢管1与锚垫板4相连接，锚垫板4底部与钢板6贴合焊接，钢板6并封盖焊接在方钢管5顶部形成锚盒；所述的定位钢管1为直径60mm、厚度为5mm的圆钢管。所述的定位钢管1与锚垫板4顶部满焊，且内穿一螺旋筋3。所述的螺旋筋3为直径8mm圆钢，其采用M6螺丝2与锚垫板4固定。所述的锚垫板4为有粘结预应力钢棒配套锚垫板。所述的方钢管5截面参数为250×150×12mm，长150mm。所述的钢板6为250×150mm，厚度为12mm。所述的钢板6边缘与方钢管5连接采用满焊。
如图3、图4、图5所示，一种用于桥塔的横向有粘结预应力钢棒锚固组件的施工方法，其特征在于按以下步骤进行：每个钢棒锚固组件的方钢管5在塔柱钢筋绑扎过程中与定位筋焊接固定，再安装金属波纹管及预应力钢棒；合模浇筑混凝土后，待塔柱混凝土达到设计要求后使用穿心式千斤顶通过引伸杆张拉完成；使用高强橡胶管串联所有钢棒锚固组件，真空吸浆进行压浆，最后封锚完成横向预应力施工；具体步骤及方法以下：
(1)钢棒锚固组件及预应力定位安装：如图3所示，钢棒锚固组件的方钢管5在塔柱钢筋绑扎过程中与定位筋焊接固定，金属波纹管8两端与两侧的定位钢管1连接封闭，再在有粘结预应力钢棒配套锚垫板上安装有粘结预应力钢棒9及垫片10，拧紧锚固螺母11；
(2)预应力钢棒张拉：如图4所示，在混凝土强度达到设计要求后开始张拉，张拉端通过引伸杆12与预应力钢棒9端头丝口连接，安装穿心式千斤顶13，锁紧锚固螺母11；采用单支单段张拉方式张拉完成；
(3)预应力管道连接：如图5所示，张拉完成后，使用高强橡胶管14串联纵向单列锚垫板4，保证注浆孔密闭性；
(4)真空压浆：如图5所示，使用抽真空管20与塔柱19最顶层预应力钢棒9顶部锚垫板注浆孔7连接，使用真空泵18抽浆；使用压浆管15与塔柱19最底层预应力钢棒9底部锚垫板注浆孔7连接，采用压浆泵15在底部进行压浆；当出浆流畅、稳定且稠度一致时即可完成注浆。
本发明为了克服上述现有传统预应力技术存在的问题及缺点，采用高强度螺母定型化加工，一次性精确张拉，同时采取连接板焊接和预应力钢棒锚固螺母人工锁紧方式，双层保障，增加安全系数。具有操作方便、施工精度高，张拉应力及伸长量一致性强等优势，有效解决了传统夹片锚回缩量较大、应力损失大，张拉施工繁琐等问题，大大提高桥梁结构的使用寿命。

Claims (9)

  1. 用于桥塔横向有粘结预应力钢棒锚固组件，包括两根定位钢管、两根螺旋筋、锚垫板、方钢管、钢板，其特征在于：锚垫板上设有两个定位孔及一个注浆孔，钢板上设有孔并与注浆孔相通，两根定位钢管对应焊接在锚垫板的两个定位孔上，每根定位钢管内穿于一螺旋筋，每根螺旋筋通过一螺丝固定在锚垫板上，每根螺旋筋通过定位钢管与锚垫板相连接，锚垫板底部与钢板贴合焊接，钢板并封盖焊接在方钢管顶部形成锚盒。
  2. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的定位钢管为直径60mm，厚度为5mm圆钢管。
  3. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的定位钢管与锚垫板顶部满焊。
  4. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的螺旋筋为直径8mm圆钢。
  5. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的锚垫板为有粘结预应力钢棒配套锚垫板。
  6. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的方钢管截面参数为250×150×12mm，长150mm。
  7. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的钢板为250×150mm，厚度为12mm。
  8. 根据权利要求1所述的用于桥塔横向有粘结预应力钢棒锚固组件，其特征在于：所述的钢板边缘与方钢管连接采用满焊。
  9. 一种根据权利要求1－8之一所述的用于桥塔横向有粘结预应力钢棒锚固组件的施工方法，其特征在于按以下步骤进行：每个钢棒锚固组件的方钢管在塔柱钢筋绑扎过程中与定位筋焊接固定，再安装金属波纹管及预应力钢棒；合模浇筑混凝土后，待塔柱混凝土达到设计要求后使用穿心式千斤顶通过引伸杆张拉完成；使用高强橡胶管串联所有钢棒锚固组件，真空吸浆进行压浆，最后封锚完成横向预应力施工；具体步骤及方法以下：
    (1)钢棒锚固组件及预应力定位安装：每个钢棒锚固组件的方钢管在塔柱钢筋绑 扎过程中与定位筋焊接固定，金属波纹管两端与两侧的定位钢管连接封闭，再在有粘结预应力钢棒配套锚垫板上安装有粘结预应力钢棒及垫片，拧紧锚固螺母；
    (2)预应力钢棒张拉：在混凝土强度达到设计要求开始张拉，张拉端通过引伸杆与预应力钢棒端头丝口连接，安装穿心式千斤顶，锁紧锚固螺母；采用单支单段张拉方式张拉完成；
    (3)预应力管道连接：张拉完成后，使用高强橡胶管串联纵向单列锚垫板，保证注浆孔密闭性；
    (4)真空压浆：使用抽真空管与塔柱最顶层预应力钢棒顶部锚垫板注浆孔连接，使用真空泵抽浆；使用压浆管与塔柱最底层预应力钢棒底部锚垫板注浆孔连接，采用压浆泵在底部进行压浆；当出浆流畅、稳定且稠度一致时即可完成注浆。
PCT/CN2020/100314 2019-07-08 2020-07-05 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法 WO2021004417A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201910611094.9A CN110396927A (zh) 2019-07-08 2019-07-08 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法
CN201921061693.X 2019-07-08
CN201910611094.9 2019-07-08
CN201921061693.XU CN210712560U (zh) 2019-07-08 2019-07-08 用于桥塔横向有粘结预应力钢棒锚固组件

Publications (1)

Publication Number Publication Date
WO2021004417A1 true WO2021004417A1 (zh) 2021-01-14

Family

ID=74114395

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/100314 WO2021004417A1 (zh) 2019-07-08 2020-07-05 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法

Country Status (1)

Country Link
WO (1) WO2021004417A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549672A (zh) * 2020-05-11 2020-08-18 广西路桥工程集团有限公司 一种竖向预应力管道压浆装置及其压浆方法
CN114278099A (zh) * 2021-11-29 2022-04-05 中交世通(重庆)重工有限公司 一种预应力钢结构工具杆件系统
CN114855639A (zh) * 2022-06-15 2022-08-05 保利长大工程有限公司 高空索塔横梁施工托架预压组件

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280021A (ja) * 1998-03-31 1999-10-12 Shinko Kosen Kogyo Kk 斜張橋ケーブル用サドル構造体
CN2739290Y (zh) * 2004-09-18 2005-11-09 柳州欧维姆机械股份有限公司 钢绞线竖向预应力锚固体系
CN102400441A (zh) * 2011-11-29 2012-04-04 中铁三局集团有限公司 一种斜拉桥钢筋混凝土索塔预应力体系的安装和使用方法
CN102518042A (zh) * 2011-12-19 2012-06-27 衡水橡胶股份有限公司 T型混凝土简支组合桥梁横向连接预应力钢筋的施工方法
CN202492801U (zh) * 2012-04-05 2012-10-17 衡水橡胶股份有限公司 一种预应力钢棒锚固组件
CN108756253A (zh) * 2018-08-01 2018-11-06 中建五局华东建设有限公司 一种后张法预应力注浆出浆口结构
CN110396927A (zh) * 2019-07-08 2019-11-01 中建三局第二建设工程有限责任公司 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法
CN210712560U (zh) * 2019-07-08 2020-06-09 中建三局第二建设工程有限责任公司 用于桥塔横向有粘结预应力钢棒锚固组件

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280021A (ja) * 1998-03-31 1999-10-12 Shinko Kosen Kogyo Kk 斜張橋ケーブル用サドル構造体
CN2739290Y (zh) * 2004-09-18 2005-11-09 柳州欧维姆机械股份有限公司 钢绞线竖向预应力锚固体系
CN102400441A (zh) * 2011-11-29 2012-04-04 中铁三局集团有限公司 一种斜拉桥钢筋混凝土索塔预应力体系的安装和使用方法
CN102518042A (zh) * 2011-12-19 2012-06-27 衡水橡胶股份有限公司 T型混凝土简支组合桥梁横向连接预应力钢筋的施工方法
CN202492801U (zh) * 2012-04-05 2012-10-17 衡水橡胶股份有限公司 一种预应力钢棒锚固组件
CN108756253A (zh) * 2018-08-01 2018-11-06 中建五局华东建设有限公司 一种后张法预应力注浆出浆口结构
CN110396927A (zh) * 2019-07-08 2019-11-01 中建三局第二建设工程有限责任公司 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法
CN210712560U (zh) * 2019-07-08 2020-06-09 中建三局第二建设工程有限责任公司 用于桥塔横向有粘结预应力钢棒锚固组件

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549672A (zh) * 2020-05-11 2020-08-18 广西路桥工程集团有限公司 一种竖向预应力管道压浆装置及其压浆方法
CN114278099A (zh) * 2021-11-29 2022-04-05 中交世通(重庆)重工有限公司 一种预应力钢结构工具杆件系统
CN114855639A (zh) * 2022-06-15 2022-08-05 保利长大工程有限公司 高空索塔横梁施工托架预压组件

Similar Documents

Publication Publication Date Title
WO2021004417A1 (zh) 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法
CN204546759U (zh) 预应力混凝土防漏浆装置
CN104060535A (zh) 预应力高强螺纹钢筋锚固体系及施工方法
CN2739290Y (zh) 钢绞线竖向预应力锚固体系
CN203510449U (zh) 一种用于管桩生产中的新型张拉装置
CN202809633U (zh) Phc管桩与承台的连接构造
CN210712560U (zh) 用于桥塔横向有粘结预应力钢棒锚固组件
CN102134859A (zh) 预应力管桩抗拔试验装置
CN101745983A (zh) 一种管桩预应力张拉装置
CN110029777B (zh) 一种预应力frp筋纤维高强轻骨料混凝土梁及其制备方法
CN109838038B (zh) 一种预应力复材筋复合式锚具及其成型方法
CN106917517B (zh) 一种预应力高强纤维布加固柱构件的施工方法
CN102912987B (zh) 低回缩预应力混凝土构件应力施加方法及其工具
CN213979925U (zh) 一种用于配电箱预埋的箱体内加固装置
CN206815540U (zh) 一种用于混凝土结构预埋件的定位装置
CN111350271B (zh) 一种混凝土板钢混连接界面抗裂结构及其制备方法
CN213449469U (zh) 一种单面模板立模加固组合结构
CN201597115U (zh) 一种管桩预应力张拉装置
CN106930471A (zh) 一种快速装配式管约束预应力构件
CN111707541B (zh) 混凝土单轴受拉持荷和测试装置及其使用方法
CN110396927A (zh) 用于桥塔横向有粘结预应力钢棒锚固组件及施工方法
CN114396192A (zh) 用于大型输电塔的插入式钢管混凝土柱脚及其施工方法
CN210289180U (zh) 一种粗钢筋预应力张拉装置
CN203498853U (zh) 一种用于输电铁塔的岩石锚杆基础
CN205134746U (zh) 一种两端带有螺纹的预应力钢筋

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20836687

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20836687

Country of ref document: EP

Kind code of ref document: A1