WO2021103895A1 - 预埋装配式伸缩缝超长安装悬吊调平定位系统及施工方法 - Google Patents

预埋装配式伸缩缝超长安装悬吊调平定位系统及施工方法 Download PDF

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WO2021103895A1
WO2021103895A1 PCT/CN2020/123928 CN2020123928W WO2021103895A1 WO 2021103895 A1 WO2021103895 A1 WO 2021103895A1 CN 2020123928 W CN2020123928 W CN 2020123928W WO 2021103895 A1 WO2021103895 A1 WO 2021103895A1
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Prior art keywords
expansion joint
suspension
embedded
positioning system
installation
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PCT/CN2020/123928
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English (en)
French (fr)
Inventor
欧永迁
高晨
周伯华
王舒哲
王�锋
肖礼鹏
马春桃
彭建锋
黎平
肖攀
张曼
高悦
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中建三局第二建设工程有限责任公司
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Priority claimed from CN201922106653.9U external-priority patent/CN211522857U/zh
Priority claimed from CN201911206426.1A external-priority patent/CN110777650A/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 WO2021103895A1 publication Critical patent/WO2021103895A1/zh

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    • 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
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • 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 relates to the field of bridge engineering, and mainly relates to a pre-embedded assembly type expansion joint super-long installation suspension leveling positioning system and a construction method.
  • the expansion joints of prestressed cast-in-place box girder are constructed using the "post-embedded method", that is, when the main structure of the concrete box girder is constructed, expansion joints are reserved at the end of each header girder, and after the asphalt paving on the bridge deck is completed Construction is carried out by reverse cutting, and the installation height and smoothness of the expansion joint can be adjusted according to the asphalt finish surface.
  • the expansion joint is installed before the bridge deck asphalt paving to complete the pre-embedded component installation, the installation process can overcome the traditional "post-embedded method" construction period long and temporary measures Many, waste of resources, etc., but the pre-embedded components require high installation accuracy, and it is difficult to install and level over long lengths.
  • the purpose of the present invention is to solve the need for ultra-long installation of pre-embedded expansion joint pre-embedded components with high precision, difficult to locate and adjust, and meet the high-quality requirements for installation of expansion joints, and is an ultra-long assembled expansion joint pre-embedded component
  • High-precision leveling and fixing provide a suspension leveling positioning system and construction method.
  • the expansion joint embedded component is fixed under the main beam through the handle suspension rod.
  • the handle suspension rod can be rotated to adjust the height and position of the embedded component, which is convenient for the overall precise positioning of the ultra-long embedded component, the installation is firm, and it is not easy to deform, and meets the requirements of the embedded component.
  • the installation of components requires high precision to improve the smoothness and durability of the installation of expansion joints.
  • the pre-embedded assembly type expansion joint super-long installation suspension leveling and positioning system including the main beam of section steel, four handle suspension rods, six horizontal casters, two bases, and suspension rod nuts. It is characterized by: both ends of the main beam of section steel They are respectively fixed on two bases; each base is equipped with three horizontal casters; the middle of the section steel main beam is provided with two unconnected hollow chutes, and each chute is equipped with two handle suspension rods, and each handle is suspended A suspension nut is arranged at the lower end of the rod, and the suspension nut is connected with the expansion joint embedded component; each horizontal caster uses a concrete beam as a fulcrum.
  • the distance between the two hollow chutes is 10cm.
  • the section steel main beam is made of channel steel, and the length is 1.5m.
  • the handle suspension rod is a handle bolt.
  • the base is made of steel plate.
  • each suspension leveling and positioning system is arranged above the expansion joint pre-embedded assembly along the bridge transverse joint at a certain interval, and is connected to the expansion joint through the handle suspension rod.
  • the suspension rod nut fixed on the inner side of the expansion joint pre-embedded assembly is connected.
  • the elevation of the expansion joint pre-embedded assembly is adjusted by rotating the handle suspension rod, and its smoothness and cross slope are adjusted by the horizontal casters fixed at both ends of the steel main beam.
  • the suspension leveling and positioning system is installed above the expansion joint pre-embedded assembly along the transverse joint of the bridge at a distance of 2m, and the suspension nut fixed on the expansion joint pre-embedded assembly Align, connect the handle suspension rod with the suspension rod nut fixed on the inner side of the expansion joint embedded component, so that the suspension leveling and positioning system and the expansion joint embedded component form a whole; adjust the height of the expansion joint embedded component by rotating the handle suspension rod, Adjust the smoothness and cross slope of the pre-embedded components of expansion joints by moving the horizontal casters on the concrete beam, and double-check the height and smoothness of the pre-embedded components of expansion joints to ensure that the installation error of the pre-embedded components of expansion joints is ⁇ 2mm;
  • the present invention performs positioning and leveling installation by suspending the embedded components, creating conditions for the overall precise installation of the ultra-long embedded components, realizing convenient positioning of the embedded components, firm installation, and resistance to deformation, and meeting the requirements for the installation height of the ultra-long embedded components. Accuracy requirements, improve the smoothness and durability of the expansion joint installation, and ensure the installation quality of the expansion joint.
  • Figure 1 is a schematic cross-sectional view of the present invention.
  • Figure 2 is a schematic plan view of the present invention.
  • the present invention includes a profile steel main beam 1, four handle suspension rods 2, handle bolts 3, six horizontal casters 4, two bases 5, and suspension rod nuts 6, which are characterized by: profile steel
  • the two ends of the main beam 1 are respectively fixed on the two bases 5 by handle bolts 3; each base 5 is provided with three horizontal casters 4; the middle of the section steel main beam 1 is provided with two disconnected hollow chutes, two hollows A 10cm partition is reserved between the chutes.
  • Two handle suspension rods 2 are installed in each chute, and a suspension nut 6 is set at the lower end of each handle suspension rod 2, and the suspension nut 6 is connected to the expansion joint embedded assembly 8;
  • the horizontal casters 4 take the concrete beam 7 as the fulcrum.
  • the main beam of the section steel adopts Q235A 10# channel steel with a length of 1.5m
  • the handle suspension is an M12 ⁇ 100 handle bolt
  • the handle bolt is an M12 ⁇ 60 bolt
  • the horizontal caster is 10# horizontal adjustment Wheel
  • the suspension nut is an M12 long hole nut
  • the base is made of 2mm thick Q235 steel plate.
  • the section steel main beam 1 uses Q235A 10# channel steel with a length of 1.5m.
  • a M12 screw hole is set 15cm away from the two ends of the section steel main beam 1, and two unconnected hollow slides are set in the middle of the section steel main beam 1. Slot, a 10cm partition is reserved between the two hollow chutes.
  • the base 5 is made of a 2mm thick Q235 steel plate into an equilateral triangle with a side length of 15cm.
  • a M12 screw hole is set at the center of the triangle, and a horizontal caster 4 is set at each of the three corners of the base 5.
  • the profiled steel main beam 1 and the base 5 are connected by M12 handle bolts 3.
  • the handle suspension rod 2 uses a 10cm long M12 handle screw, and the suspension nut 6 uses a 10cm long M12 nut; the handle suspension rod 2 is installed in the hollow chute of the steel main beam 1, and each chute is installed two.
  • the pre-embedded assembly type expansion joint pre-embedded assembly 8 made by processing the pre-embedded U-shaped steel bar 9 and the expansion joint positioning rib 10, the expansion joint pre-embedded assembly 8 is hoisted to the expansion joint installation slot as a whole, and the plane of the expansion joint pre-embedded assembly 8 is checked Position, ensure that its error is ⁇ 2mm.
  • Two suspension rod nuts 6 are symmetrically fixed every 2m along the inner side of the expansion joint embedded component 8.
  • the suspension rod nut 6 inside the expansion joint embedded component 8 is connected, and the suspension leveling and positioning system is integrated with the expansion joint embedded component 8; the height of the expansion joint embedded component 8 is adjusted by rotating the handle suspension rod 2, and the horizontal caster 4 Move on the concrete beam 7 to adjust the smoothness and cross-slope of the expansion joint embedded components 8, and double-check the elevation and smoothness of the expansion joint embedded components to ensure that the installation error of the expansion joint embedded components is ⁇ 2mm.
  • the handle suspension rod 2 is rotated to release the suspension leveling positioning system and the expansion joint embedded component 8 to complete the positioning and installation of the expansion joint embedded component.

Abstract

本发明涉及预埋装配式伸缩缝超长安装悬吊调平定位系统及施工方法，悬吊调平定位系统结构为型钢主梁两端分别固定在两个基座上；每个基座上设置三个水平脚轮；型钢主梁中部设置两条不连通的镂空滑槽，每个滑槽内安装两根手柄悬杆，每个手柄悬杆下端设置一个悬吊螺母，悬吊螺母与伸缩缝预埋组件连接；水平脚轮以混凝土梁为支点。悬吊调平定位系统按照间距沿桥梁横向跨缝设于伸缩缝预埋组件上方，通过手柄悬杆与固定在伸缩缝预埋组件内侧的悬杆螺母连接，通过手柄悬杆和水平脚轮精准调整伸缩缝预埋组件的高程、平顺度及横坡；混凝土浇筑完成并至混凝土初凝后解除，完成预埋组件高精度安装。为超长预埋组件整体精准安装创造条件，确保伸缩缝安装质量。

Description

预埋装配式伸缩缝超长安装悬吊调平定位系统及施工方法 技术领域
本发明涉及桥梁工程领域，主要涉及一种预埋装配式伸缩缝超长安装悬吊调平定位系统及施工方法。
背景技术
目前，预应力现浇箱梁伸缩缝采用“后嵌法”施工，即在混凝土箱梁主体结构施工时，在每联箱梁梁端预留伸缩缝槽口，在桥面沥青摊铺完成后二次反切进行施工，伸缩缝安装时可根据沥青完成面调整安装高程及平顺度。高精度预埋装配式伸缩缝调整伸缩缝安装工艺，将伸缩缝安装前置至桥面沥青摊铺前完成预埋组件安装，其安装工艺可克服传统“后嵌法”施工工期长、临时措施多、资源浪费等不足，但其预埋组件前置对安装精度要求高，超长安装调平难度大。
发明内容
本发明的目的是为了解决预埋装配式伸缩缝预埋组件超长安装高精度的需要，定位、调整难度大的问题，满足伸缩缝安装高质量要求，为超长装配式伸缩缝预埋组件高精度调平、固定提供了一种悬吊调平定位系统及施工方法。通过手柄悬杆将伸缩缝预埋组件固定于主梁下方，其手柄悬杆可通过旋转调整预埋组件高程及位置，便于超长预埋组件整体精准定位、安装牢固、不易变形，满足预埋组件安装高精度要求，提高伸缩缝安装的平顺度及耐久性。
本发明解决技术问题所采用的技术方案是：
预埋装配式伸缩缝超长安装悬吊调平定位系统，包括型钢主梁、四根手柄悬杆、六个水平脚轮、两个基座、悬杆螺母，其特征在于：型钢主梁两端分别固定在两个基座上；每个基座上设置三个水平脚轮；型钢主梁中部设置两条不连通的镂空滑槽，每个滑槽内安装两根手柄悬杆，每个手柄悬杆下端设置一个悬吊螺母，悬吊螺母与伸缩缝预埋组件连接；每个水平脚轮以混凝土梁为支点。
两个镂空滑槽间为10cm。
所述型钢主梁采用槽钢制作而成，长度为1.5m。
所述手柄悬杆为手柄螺栓。
所述基座采用钢板制作而成。
本发明使用时，可以同时采用多个本发明的悬吊调平定位系统，每个悬吊调平定位系统按照一定间距沿桥梁横向跨缝设置于伸缩缝预埋组件上方，通过手柄悬杆与固定于伸缩缝预埋组件内侧的悬杆螺母连接，伸缩缝预埋组件高程通过手柄悬杆旋转调整，其平顺度及横坡通过固定于型钢主梁两端的水平脚轮调节。
利用权利要求1所述的预埋装配式伸缩缝超长安装悬吊调平定位系统的施工方法，其特征在于按以下步骤进行：
一、伸缩缝预埋组件安装：将伸缩缝预埋组件整体吊装至伸缩缝安装槽口，核对伸缩缝预埋组件平面位置，并沿伸缩缝预埋组件内侧每2m对称固定两个悬杆螺母；
二、悬吊调平定位系统安装：将所述的悬吊调平定位系统按照2m间距沿桥梁横向跨缝设置于伸缩缝预埋组件上方，与固定在伸缩缝预埋组件上的悬杆螺母对齐，将手柄悬杆与固定在伸缩缝预埋组件内侧的悬杆螺母连接，使悬吊调平定位系统与伸缩缝预埋组件形成整体；通过手柄悬杆旋转调整伸缩缝预埋组件高程，通过水平脚轮在混凝土梁上移动调整伸缩缝预埋组件平顺度及横坡，二次复核伸缩缝预埋组件高程及平顺度，确保伸缩缝预埋组件安装误差≤2mm；
三、混凝土浇筑：采用C50钢纤维混凝土浇筑箱梁预留伸缩缝槽口，倾倒混凝土，并用30型振捣棒将混凝土振捣密实；混凝土浇筑完毕后，完成表面收光，用塑料薄膜覆盖，并在人孔四周设置警示标志，避免人员踩踏；
四、悬吊调平定位系统解除：混凝土初凝后旋转手柄悬杆，解除悬吊调平定位系统与伸缩缝预埋组件连接，完成伸缩缝预埋组件定位安装。
本发明通过悬吊预埋组件进行定位调平的安装，为超长预埋组件整体精准安装创造条件，实现了预埋组件定位方便、安装牢固、不易变形，满足了超长预埋组件安装高精度要求，提高伸缩缝安装的平顺度及耐久性，确保了伸缩缝的安装质量。
附图说明
图1是本发明的剖面示意图。
图2是本发明的平面示意图。
附图标记：1-型钢主梁，2-手柄悬杆，3-手柄螺栓，4-水平脚轮，5-基座，6-悬杆螺母，8-伸缩缝预埋组件，9-预埋U型钢筋，10-伸缩缝定位筋。
具体实施方式
下面结合附图和具体实施例对本实用新型做进一步说明。
在图1、图2所示，本发明包括型钢主梁1、四根手柄悬杆2、手柄螺栓3、六个水平脚轮4、两个基座5、悬杆螺母6，其特征在于：型钢主梁1两端分别通过手柄螺栓3固定在两个基座5上；每个基座5上设置三个水平脚轮4；型钢主梁1中部设置两条不连通的镂空滑槽，两个镂空滑槽间预留10cm的隔断，每个滑槽内安装两根手柄悬杆2，每个手柄悬杆2下端设置一个悬吊螺母6，悬吊螺母6与伸缩缝预埋组件8连接；每个水平脚轮4以混凝土梁7为支点。所述型钢主梁采用Q235A的10#槽钢，长度为1.5m，所述手柄悬杆为M12×100手柄螺栓，所述手柄螺栓为M12×60的螺栓，所述水平脚轮为10#水平调节轮；所述悬杆螺母为M12长孔螺母，所述基座为2mm厚Q235钢板制作而成。
利用所述的预埋装配式伸缩缝超长安装悬吊调平定位系统的施工方法，其特征在于按以下步骤进行：
1、悬吊调平定位系统制作
型钢主梁1采用Q235A的10#槽钢，长度为1.5m，在距离型钢主梁1两端边缘15cm处各设置一个M12的螺孔，在型钢主梁1中部设置2条不连通的镂空滑槽，两个镂空滑槽间预留10cm的隔断。基座5采用2mm厚Q235钢板制作成边长为15cm的等边三角形，三角形中心处设置一个M12的螺孔，并在基座5的三个角处个设置一个水平脚轮4。型钢主梁1与基座5采用M12手柄螺栓3连接。手柄悬杆2采用10cm长的M12手柄螺杆，悬杆螺母6采用10cm长的M12螺母；手柄悬杆2安装于型钢主梁1镂空滑槽内，每个滑槽安装两个。
2、伸缩缝预埋组件安装
将预埋U型钢筋9和伸缩缝定位筋10加工制作的预埋装配式伸缩缝预埋组件8，伸缩缝预埋组件8整体吊装至伸缩缝安装槽口，核对伸缩缝预埋组件8平面位置，保证其误差≤2mm。并沿伸缩缝预埋组件8内侧每2m对称固定两个悬杆螺母6。
3、悬吊调平定位系统安装
将每个悬吊调平定位系统按照2m间距沿桥梁横向跨缝设置于伸缩缝预埋组件8上方，与固定在伸缩缝预埋组件上的悬杆螺母6对齐，将手柄悬杆2与固定在伸缩缝预埋组件8内侧的悬杆螺母6连接，悬吊调平定位系统与伸缩缝预埋组件8形成整体；通过手柄悬杆2旋转调整伸缩缝预埋组件8高程，通过水平脚轮4在混凝土梁7上移动调整伸缩缝预埋组件8平顺度及横坡，二次复核伸缩缝预埋组件高程及平顺度，确保伸缩缝预埋组件安装误差≤2mm。
4、混凝土浇筑
采用C50钢纤维混凝土浇筑箱梁预留伸缩缝槽口，混凝土采用人工低空倾倒，并用30型振捣棒将混凝土振捣密实，在振捣过程尽量避免振捣棒触碰悬吊调平定位系统；混凝土浇筑完毕后，完成表面收光，用塑料薄膜覆盖，并在人孔四周设置警示标志，避免人员踩踏。
5、悬吊调平定位系统解除
混凝土初凝后旋转手柄悬杆2，解除悬吊调平定位系统与伸缩缝预埋组件8连接，完成伸缩缝预埋组件定位安装。

Claims (6)

  1. 预埋装配式伸缩缝超长安装悬吊调平定位系统，包括型钢主梁、四根手柄悬杆、六个水平脚轮、两个基座、悬杆螺母，其特征在于：型钢主梁两端分别固定在两个基座上；每个基座上设置三个水平脚轮；型钢主梁中部设置两条不连通的镂空滑槽，每个滑槽内安装两根手柄悬杆，每个手柄悬杆下端设置一个悬吊螺母，悬吊螺母与伸缩缝预埋组件连接；每个水平脚轮以混凝土梁为支点。
  2. 根据权利要求1所述的预埋装配式伸缩缝超长安装悬吊调平定位系统，其特征在于：两个镂空滑槽间为10cm。
  3. 根据权利要求1或2所述的预埋装配式伸缩缝超长安装悬吊调平定位系统，其特征在于：所述型钢主梁采用槽钢制作而成，长度为1.5m。
  4. 根据权利要求1或2所述的预埋装配式伸缩缝超长安装悬吊调平定位系统，其特征在于：所述手柄悬杆为手柄螺栓。
  5. 根据权利要求1或2所述的预埋装配式伸缩缝超长安装悬吊调平定位系统，其特征在于：所述基座采用钢板制作而成。
  6. 利用权利要求1所述的预埋装配式伸缩缝超长安装悬吊调平定位系统的施工方法，其特征在于按以下步骤进行：
    一、伸缩缝预埋组件安装：将伸缩缝预埋组件整体吊装至伸缩缝安装槽口，核对伸缩缝预埋组件平面位置，并沿伸缩缝预埋组件内侧每2m对称固定两个悬杆螺母；
    二、悬吊调平定位系统安装：将所述的悬吊调平定位系统按照2m间距沿桥梁横向跨缝设置于伸缩缝预埋组件上方，与固定在伸缩缝预埋组件上的悬杆螺母对齐，将手柄悬杆与固定在伸缩缝预埋组件内侧的悬杆螺母连接，使悬吊调平定位系统与伸缩缝预埋组件形成整体；通过手柄悬杆旋转调整伸缩缝预埋组件高程，通过水平脚轮在混凝土梁上移动调整伸缩缝预埋组件平顺度及横坡，二次复核伸缩缝预埋组件高程及平顺度，确保伸缩缝预埋组件安装误差≤2mm；
    三、混凝土浇筑：采用C50钢纤维混凝土浇筑箱梁预留伸缩缝槽口，倾倒混凝土，并用30型振捣棒将混凝土振捣密实；混凝土浇筑完毕后，完成表面收光，用塑料薄膜覆盖，并在人孔四周设置警示标志，避免人员踩踏；
    四、悬吊调平定位系统解除：混凝土初凝后旋转手柄悬杆，解除悬吊调平定位系统与伸缩缝预埋组件连接，完成伸缩缝预埋组件定位安装。
PCT/CN2020/123928 2019-11-29 2020-10-27 预埋装配式伸缩缝超长安装悬吊调平定位系统及施工方法 WO2021103895A1 (zh)

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