阅读说明：本技术 一种耗能减震的波纹钢管-橡胶混凝土装配式桥墩及方法 (Energy-consuming and shock-absorbing corrugated steel pipe-rubber concrete assembled pier and method ) 是由 孙海波 刘静波 刘保东 高猛 李东潇 冯明扬 刘忾 李增金 徐道涵 胡明刚 孙绪 于 2019-10-08 设计创作，主要内容包括：本发明公开了一种耗能减震的波纹钢管-橡胶混凝土装配式桥墩及方法,包括从下到上依次连接的承台、支撑柱和盖梁,所述承台与支撑柱之间通过法兰对接,对接法兰全部被浇筑在承台的凹槽内,所述支撑柱内部设有钢筋笼骨架并浇筑混凝土,顶部通过纵向钢筋配合盖梁上预设的孔道,所述盖梁通过孔道与纵向钢筋上端的配合安装在支撑柱上,所述盖梁用于配合支撑柱和承台实现对上部桥梁结构的支撑,通过装配式的设计提高了桥梁的施工效率和整体的抗震能力,具有更好的施工便捷性和耗能减震能力,另外,支撑柱外部的波纹构造起缓冲撞击力的作用,减弱了撞击对桥墩的作用力,通过波纹钢管内浇筑的橡胶混凝土实现提高桥墩的抗震延性和主动耗能能力的需求。(The invention discloses an energy-consuming and shock-absorbing corrugated steel pipe-rubber concrete assembled pier and a method, which comprises a bearing platform, a support column and a cover beam which are sequentially connected from bottom to top, wherein the bearing platform is butted with the support column through flanges, the butting flanges are all poured in a groove of the bearing platform, a steel reinforcement cage framework is arranged in the support column, concrete is poured, the top of the support column is matched with a hole channel preset on the cover beam through a longitudinal steel bar, the cover beam is arranged on the support column through the hole channel and the upper end of the longitudinal steel bar in a matching way, the cover beam is used for matching with the support column and the bearing platform to realize the support of an upper bridge structure, the construction efficiency and the integral shock resistance of the bridge are improved through an assembled design, the energy-consuming and shock-absorbing capabilities are better, in addition, a corrugated structure outside the support column plays a role of buffering impact force, and weakens, the rubber concrete poured in the corrugated steel pipe meets the requirements of improving the earthquake-resistant ductility and the active energy consumption capability of the pier.)

1. The utility model provides an energy-consuming absorbing ripple steel pipe-rubber concrete assembled pier, its characterized in that, includes cushion cap, support column and bent cap, be equipped with first flange between cushion cap and the support column, first flange ring direction cooperation has a plurality of fixed steel bars, the one end of fixed steel bar is buried underground in the cushion cap, and the other end passes the predetermined second flange of support column lower extreme for connect cushion cap and support column, the inside longitudinal reinforcement that is equipped with of support column, the support column top surface is extended to the longitudinal reinforcement upper end, be equipped with the pore that corresponds the longitudinal reinforcement upper end on the bent cap, the bent cap passes through the pore and installs on the support column with the cooperation of longitudinal reinforcement upper end, the bent cap is used for cooperating support column and cushion cap realization to the support of upper portion bridge construction.

2. The energy-consuming and shock-absorbing corrugated steel pipe-rubber concrete fabricated pier as claimed in claim 1, wherein the bearing platform is provided with a groove coaxial with the first flange, when the first flange and the second flange are butted, the lower end of the fixing steel bar is inserted into the groove, and grouting material is poured between the part of the fixing steel bar in the groove and the groove to realize the fixed connection.

3. The energy-dissipating and shock-absorbing corrugated steel pipe-rubber concrete fabricated pier as claimed in claim 2, wherein the fixing steel bar comprises a straight line section and a curved section, the straight line section passes through the first flange and then is connected with the second flange, the axis of the curved section is in the shape of a circular arc and is coplanar with the axis of the first flange, and the curved section is connected with the steel bar structure inside the bearing platform.

4. The energy-dissipating and shock-absorbing corrugated steel pipe-rubber concrete fabricated pier as claimed in claim 1, wherein the supporting column comprises a steel pipe, a reinforcement cage framework arranged inside the steel pipe, and concrete poured inside the steel pipe, the reinforcement cage framework comprises a plurality of longitudinal reinforcements arranged in a circumferential direction inside the steel pipe and a plurality of circumferential reinforcements arranged at intervals in an axial direction, each circumferential reinforcement is capable of connecting the longitudinal reinforcements into a whole, and the concrete and the steel pipe are matched to form an integrated structure.

5. The energy-dissipating and shock-absorbing corrugated steel pipe-rubber concrete fabricated pier as claimed in claim 4, wherein the side wall of the steel pipe is of a corrugated structure, and the concrete, the steel pipe and the reinforcement cage framework form an integrated structure.

6. A construction method of a corrugated steel pipe-rubber concrete fabricated pier for dissipating energy and absorbing shock as claimed in any one of claims 1 to 5, comprising the steps of:

pouring a bearing platform and reserving a groove on the top surface of the bearing platform;

arranging a first flange and fixed steel bars, fixedly connecting a plurality of fixed steel bars with the first flange along the circumferential direction of the first flange, embedding the lower ends of the fixed steel bars in the grooves, and pouring grouting material;

hoisting the support column, enabling a second flange at the bottom of the support column to be in butt joint with the first flange, and enabling the upper end of the fixed steel bar to penetrate through a preset flange hole in the second flange and be fixed with the second flange;

and hoisting the cover beam to the top of the support column, aligning the preset pore passage on the cover beam with the upper end of the longitudinal steel bar, butting the pore passage with the longitudinal steel bar by the cover beam below, and pouring grouting material into the gap between the pore passage and the longitudinal steel bar.

7. The method of claim 6, wherein the groove is cylindrical and has a diameter greater than that of the support post steel pipe.

8. The construction method according to claim 6, wherein the first flange is fitted with six fixing bars uniformly arranged in a circumferential direction of the first flange and having bent portions located on an eccentric side of the first flange.

9. The construction method according to claim 6, wherein the second flange is welded at the bottom end of the steel pipe, the studs are welded on the outer wall of the steel pipe above the second flange and distributed along the circumferential direction of the outer wall of the steel pipe, after the first flange and the second flange are butted, the notch above the groove is poured through grouting material, and the pouring part covers all the studs.

10. The method of claim 9, wherein the first flange and the second flange are positioned in the groove after abutting.

Technical Field

The application relates to the field of bridge engineering, in particular to an energy-consuming and shock-absorbing corrugated steel pipe-rubber concrete assembled pier and a method.

Background

At present, a bridge lower structure is mostly of a reinforced concrete structure, and the construction is generally carried out in a cast-in-place mode, so that a large amount of labor force is required for the cast-in-place construction, a support and a template are erected, and the danger is high; the noise and waste residue pollution are caused to the surrounding environment, and the normal traffic around the city is seriously influenced; the construction mode has low industrialization level, low construction efficiency and high overall energy consumption of the industry. Compared with the traditional cast-in-place pier, the fabricated combined pier has the characteristics of high construction speed, short period, small environmental influence, high construction quality and the like, and is more and more widely applied to the industrialization of building structures in China.

The inventor finds that the traditional steel tube concrete has the advantages of high bearing capacity, good anti-seismic performance, convenient construction and the like, but with the continuous popularization of the application and the increase of the service time, a series of problems such as unstable construction, void, debonding, corrosion of the steel tube, easy local buckling of the tube wall and the like occur, and the respective material advantages of the steel structure and the concrete are difficult to effectively exert; on the other hand, many accidents caused by collision of vehicles (ships) with piers show that the traditional method of arranging the rigid guardrails on the periphery of the piers is difficult to effectively protect the piers when encountering large vehicle (ship) collision force, measures and structures for enhancing the anti-collision and energy-consumption characteristics of the piers by adopting novel energy-consumption materials need to be specially manufactured, the manufacturing cost is high, the application range is small, and the method is difficult to be generally applied to anti-collision design of the piers.

In summary, the existing reinforced concrete bridge piers and steel pipe concrete structures have many defects in the aspects of construction methods, ductility earthquake resistance, collision avoidance, energy consumption, and the like, and it is necessary to improve and design the existing reinforced concrete bridge piers and steel pipe concrete structures from the construction methods to the material and structure layers.

Disclosure of Invention

The application aims to overcome the defects in the prior art, and the corrugated steel pipe-rubber concrete assembled pier and the method for energy dissipation and shock absorption are provided, so that the construction efficiency and the whole shock resistance of the bridge are improved through the assembled design, and the assembled pier has better construction convenience and energy dissipation and shock absorption capacity.

The first purpose of this application is to provide an energy-consuming and shock-absorbing corrugated steel pipe-rubber concrete assembled pier, adopts following technical scheme:

including cushion cap, support column and bent cap, be equipped with first flange between cushion cap and the support column, first flange ring direction cooperation has a plurality of fixed reinforcing bars, the one end of fixed reinforcing bar is buried underground in the cushion cap, and the other end passes the predetermined second flange of support column lower extreme for connect cushion cap and support column, the inside longitudinal reinforcement that is equipped with of support column, the support column top surface is extended to the longitudinal reinforcement upper end, be equipped with the pore that corresponds the longitudinal reinforcement upper end on the bent cap, the bent cap passes through the pore and installs on the support column with the cooperation of longitudinal reinforcement upper end, the bent cap is used for cooperation support column and cushion cap to realize the support to upper portion bridge structures.

Furthermore, the bearing platform is provided with a groove coaxial with the first flange, when the first flange is in butt joint with the second flange, the lower end of the fixed steel bar is inserted into the groove, and grouting material is poured between the part of the fixed steel bar in the groove and the groove to realize the fixed connection.

Furthermore, the fixed steel bar comprises a straight line section and a bent section, the straight line section penetrates through the first flange and then is connected with the second flange, the axis of the bent section is arc-shaped and coplanar with the axis of the first flange, and the bent section is connected with the steel bar structure in the bearing platform.

Further, the support column includes steel pipe, the inside steel reinforcement cage skeleton of laying of steel pipe and the inside concrete of pouring of steel pipe, the steel reinforcement cage skeleton includes along a plurality of longitudinal reinforcement that steel pipe inside ring direction set up and along a plurality of hoop reinforcing bars that axial interval set up, and every hoop reinforcing bar homoenergetic is as an organic whole with longitudinal reinforcement connection, cooperation concrete and steel pipe formation integral type structure.

Furthermore, the side wall of the steel pipe is of a corrugated structure, and an integrated structure is formed by concrete, the steel pipe and the reinforcement cage framework; the galvanized corrugated pipe is externally galvanized, and a layer of compact oxide film is attached to the surface of the galvanized corrugated pipe, so that the corrosion of a severe environment can be effectively resisted, later maintenance is not needed, and the durability of the pier is improved; and, the support column outside is restrained by corrugated steel pipe, inside is equipped with the steel reinforcement cage skeleton and pours self-compaction rubber concrete, and outside corrugated steel pipe plays the effect of buffering impact, weakening pile foundation to pier effect, and the support column structure of formation reinforcing pier is crashproof, the power consumption characteristic, and inside rubber concrete can improve the antidetonation ductility and the initiative power consumption ability of pier.

A second object of the present application is to provide a construction method of the energy-consuming and shock-absorbing corrugated steel pipe-rubber concrete fabricated pier, which comprises the following steps:

pouring a bearing platform and reserving a groove on the top surface of the bearing platform;

arranging a first flange and fixed steel bars, fixedly connecting a plurality of fixed steel bars with the first flange along the circumferential direction of the first flange, embedding the lower ends of the fixed steel bars in the grooves, and pouring grouting material;

hoisting the support column, enabling a second flange at the bottom of the support column to be in butt joint with the first flange, and enabling the upper end of the fixed steel bar to penetrate through a preset flange hole in the second flange and be fixed with the second flange;

and hoisting the cover beam to the top of the support column, aligning the preset pore passage on the cover beam with the upper end of the longitudinal steel bar, butting the pore passage with the longitudinal steel bar by the cover beam below, and pouring grouting material into the gap between the pore passage and the longitudinal steel bar.

Furthermore, the groove is cylindrical, and the diameter of the groove is larger than that of the support column steel pipe.

Further, first flange cooperation has six fixed steel bars, fixed steel bar evenly arranges along first flange hoop, is equipped with the fixed rib on the fixed steel bar and is used for improving the intensity of fixed steel bar, and its flexion is located the centrifugation side of first flange.

Furthermore, the second flange is welded at the bottom end of the steel pipe, the studs are welded on the outer wall of the steel pipe above the second flange, the studs are distributed along the circumferential direction of the outer wall of the steel pipe, after the first flange and the second flange are in butt joint, the studs are poured on the notches above the grooves through grouting materials, and the pouring part covers all the studs.

Furthermore, the first flange and the second flange are positioned in the groove after being butted.

Compared with the prior art, the application has the advantages and positive effects that:

(1) the matched combined pier is adopted, the supporting columns are used as pier bodies and are connected with the bearing platform through flanges and studs to form a whole, the structure is simple and reliable, the connection quality is improved, the overall performance and the shock resistance of the structure are improved, the construction difficulty can be reduced by quickly assembling the pier, the field operation amount is reduced, the construction efficiency is accelerated, the construction period is shortened, the economical efficiency is good, the construction operation surface is small, and the influence on the environment during construction operation is effectively reduced;

(2) the supporting column is formed by wrapping and constraining the outside of the steel tube by a steel tube, arranging a steel reinforcement cage framework inside the steel reinforcement cage framework and pouring self-compacting rubber concrete; the steel pipe wrapped outside can play a role of a template, so that the working procedures of formwork supporting and formwork removing in the construction process are reduced, and the construction period is shortened; the core concrete can be restrained in the circumferential direction, and the bearing capacity of the support column is further improved;

(3) the steel pipe with the corrugated structure can enhance the bonding contact area of the steel pipe and the core concrete and effectively improve the bonding effect, so that the problems of hollowing and debonding of the steel pipe and the concrete are reduced or avoided; in addition, the corrugated structure plays a role in buffering impact force, the acting force of impact on the pier is weakened, the pier is protected from being damaged by the impact force, and the requirements of improving the earthquake-resistant ductility and the active energy consumption capacity of the pier are met through rubber concrete poured in the corrugated steel pipe;

(4) the outer-wrapped corrugated steel pipe and the protective coating protect the surface of the pier concrete, can well prevent and control the problems of pier corrosion, steel bar corrosion and the like caused by corrosive media such as ice, snow, rainwater and the like, and improve the overall durability of the combined pier.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic view of an overall fit of a composite pier according to embodiment 1 of the present application;

fig. 2 is a schematic view of the fitting positions of the parts of the combined pier in embodiment 1 of the present application;

fig. 3 is a schematic structural diagram of a joint of a first flange and a second flange in embodiment 1 of the present application.

Wherein: 1. bearing platform, 2, fixed steel bar, 3, support column, 4, capping beam, 5, grouting material, 1-1, groove, 3-1, second flange, 3-2 and stud.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.

As introduced in the background art, although the concrete filled steel tube in the prior art has the advantages of high bearing capacity, good earthquake resistance, convenient construction and the like, with the continuous popularization of the application and the increase of the service time, a series of problems such as unstable construction, hollowing, debonding, corrosion of the steel tube, easy local buckling of the tube wall and the like occur, and the respective material advantages of the steel structure and the concrete are difficult to effectively exert; on the other hand, many accidents of collision between vehicles (ships) and piers show that the traditional method of arranging the rigid guardrails on the periphery of the piers is difficult to effectively protect the piers when encountering large vehicle (ship) collision force, measures and structures for enhancing the anti-collision and energy-consumption characteristics of the piers by adopting novel energy-consumption materials are required to be specially manufactured, the construction cost is high, the application range is small, the novel energy-consumption materials are difficult to be generally applied to anti-collision design of the piers, and aiming at the technical problems, the existing reinforced concrete piers and steel pipe concrete structures are improved and designed.