CN115162206A - Assembled reinforced concrete deepwater pier column and horizontal installation method thereof - Google Patents

Abstract

The invention discloses a prefabricated reinforced concrete deep-water bridge pier column and a horizontal installation method thereof. The bridge pier column includes a plurality of pier column segments, including a concrete main body and a steel reinforcement cage arranged therein. The end of the force-bearing steel bar is arranged through the concrete main body, and the inner side of the end of the force-bearing steel bar is provided with a connecting ferrule; the adjacent two connecting ferrules are welded and fixed; the prestressing system includes: pre-embedded pipes, pipes The grouting system is communicated with the embedded pipeline; the notch is arranged at the end of the concrete main body, and the notch is connected with the end of the embedded pipeline; the notch is provided with prestressed tendons; The ends of the tendons are connected with the anchors. In the present invention, the pier and column can be prefabricated and assembled on land, and then installed in the marine environment, so as to realize the rapid installation and construction of the pier and column of the deep-water bridge, and effectively solve the problem that the construction of the pier and column of the deep-water bridge is greatly affected by marine environmental factors, poor economy, and poor economical efficiency. High security risk issues.

Description

A prefabricated reinforced concrete deep-water bridge pier and column and its horizontal installation method

technical field

The invention relates to the technical field of bridge construction, in particular to an assembled reinforced concrete deep-water bridge pier column and a horizontal installation method thereof.

Background technique

The bridge pier is a building that supports the bridge span structure and transmits the dead load and vehicle live load to the foundation, and is usually set between two bridge abutments. The materials for building piers and columns can be wood, stone, concrete, reinforced concrete, steel, etc.

The stress of the pier-column structure in the conventional environment is dominated by small eccentric compression, but the stress of the pier-pier-column structure in the marine deep water environment usually has a large eccentric compression, and the ordinary reinforced concrete structure is in this case. It is easy to produce micro-cracks under the reinforced concrete structure, which will cause seawater intrusion, lead to corrosion of steel bars, and cause the problem of low durability of reinforced concrete structures. However, steel structure piers may suffer from fatigue and poor stability under loads such as periodic wave and flow force, occasional ship collision force, and seismic force. They are also prone to corrosion in the marine environment, and their main protection is affected by the deep water environment The measure is the cathodic protection method, which will continue to incur costs, and the total cost of protection over the life cycle is high.

At the same time, as a vertical structure, the bottom-up vertical construction method is generally adopted. When the vertical construction method is used for the construction of piers and columns in water, it is divided into two types: the water-retaining cofferdam construction method and the floating method of connecting height and sinking.

The water-proof cofferdam construction method is the most commonly used. It arranges a water-proof cofferdam around the piers and columns of the bridge. After draining the water in the cofferdam, the construction of the piers and piers is carried out in a dry environment. The construction of the water part of the piers and piers is completed. Afterwards, the cofferdam will be removed for recycling. The disadvantage of this construction method is that the cost of the cofferdam facility increases sharply with the increase of the water depth. When it is used for the construction of deep-water bridge piers and columns, the economical efficiency of the construction method is poor; when it is used in the marine environment with short effective operation time , there are also the problems of long construction period and high safety risk.

The floating method of connecting height and sinking is a new method proposed by the Chinese invention patent CN110761192A, which is suitable for the construction of piers and piers with self-floating ability in deep water environment. It is similar to the method of floating caisson foundation construction. The above construction method is to connect high bridge piers and piers segment by segment and sink them into place. However, the disadvantages of the above construction methods are: the water surface hoisting and splicing construction of the prefabricated sections of piers and columns requires large lifting equipment; the on-site splicing workload is large and the construction period is long; affected by environmental factors, the quality of segment splicing is not guaranteed; The mooring cost is high and the safety risk is high under the influence of environmental loads such as water flow, wind and waves during the sinking process of bridge piers.

In view of this, it is urgent to improve the existing reinforced concrete deepwater bridge piers and columns and their construction methods to improve the durability and service life of reinforced concrete deepwater bridge piers and columns, reduce the construction cost of reinforced concrete deepwater bridge piers and columns, and improve construction. Quality and construction safety.

SUMMARY OF THE INVENTION

In view of the above-mentioned defects, the object of the present invention is to provide a prefabricated reinforced concrete deep-water bridge pier column and its horizontal installation method, so as to solve the problem of poor durability and short service life of the existing reinforced concrete deep-water bridge pier column and reinforced concrete deep-water bridge pier column. The construction cost is high, and its construction quality and construction safety are greatly affected by the environment.

For this reason, a kind of prefabricated reinforced concrete deep-water bridge pier column provided by the present invention includes:

A plurality of pier column segments, including a concrete main body and a reinforcement cage arranged in the concrete main body, the reinforcement cage is provided with stressed reinforcement bars, and the ends of the stressed reinforcement reinforcement bars are arranged through the concrete main body, so The inner side of the end of the stressed steel bar is provided with a connecting ferrule; the two adjacent connecting ferrules are welded and fixed;

Prestressing system including:

A pre-buried pipeline is arranged in the concrete main body, and the pipeline grouting system is communicated with the pre-buried pipeline;

a notch is arranged at the end of the concrete main body, the notch is connected with the end of the embedded pipeline; the notch is provided with a prestressed rib;

An anchor is arranged in the slot, and the end of the prestressed tendon is connected with the anchor.

In the above technical solution, preferably, a joint leveling and protection structure is further provided on the joints of two adjacent connecting ferrules, and the joint leveling and protection structure includes:

The welding seam leveling layer is arranged on the connecting end faces of the two adjacent connecting ferrules, and is used for leveling the welding seam;

The welding seam protection layer is arranged on the outer side of the connection collar, and the welding seam protection layer is connected with the concrete main body on both sides of the joint.

In the above technical solution, preferably, the length of the prestressed tendon is greater than the length of the concrete main body of one pier segment, and the end of the prestressed tendon passes through at least one of the concrete main bodies in the axial direction. The section where the welding seam of the connecting ferrule is located is connected with the anchor.

In the above technical solution, preferably, the bottom end of the pier column segment located at the bottom of the pier column comprises a bottom end sealing plate;

The top end of the pier column segment located at the top of the pier column includes a top end sealing plate, and the top end sealing plate is provided with a water injection hole.

A horizontal installation method for prefabricated reinforced concrete deep-water bridge piers and columns, comprising the following steps:

Prefabricate pier column segments on land, transfer the pier column segments to the transfer trolley, and assemble the bridge pier columns on the transfer trolley into bridge pier columns;

Dock the transfer barge at the wharf, transfer the transfer trolley and the pier column to the transfer barge by using the sliding track and the hauling winch, and temporarily close the water injection hole on the top sealing plate of the pier pier column;

Transfer the transfer trolley and the pier column to the sea area near the pier position by the transfer barge, and inject water into the pressurized water tank of the transfer barge to tilt the rear end of the transfer barge; push the pier pier column and the transfer trolley to slide into the sea, The piers and columns of the bridge piers float on the sea surface, the transfer trolley is separated from the piers and columns of the bridge piers, and the transfer trolleys are recovered to the transfer barge;

Drag the pier column to the design pier position, adjust the posture of the pier pier column so that the top of the pier pier column is higher than the bottom end of the pier pier column; Inject water until the piers and columns of the bridge are close to the upright posture;

Straighten the piers and piers, construct the foundations of the piers and piers, and fix the piers and piers on the foundations of the piers at the designed piers.

In the above technical solution, preferably, before the prefabricated pier segments on land, the following steps are included:

Selecting a land prefabricated splicing yard for bridge piers, piers and columns, and constructing prefabrication equipment, splicing equipment and moving equipment, the splicing equipment is a splicing bracket, and the moving equipment includes a sliding track, a moving trolley and a shipping wharf;

In the above technical solution, preferably, a ramp is provided in the land prefabricated splicing yard for piers and piers, the slip rail is arranged on the ramp, and the lower end of the slip rail is connected to the shipping wharf, vertical to the shipping terminal;

The splicing bracket is arranged on the transfer trolley and is fixedly connected with the transfer trolley;

The transfer trolley is arranged on the sliding track, and is detachably connected to the sliding track through a temporary fixing device.

In the above technical solution, preferably, splicing the pier and column segments into a bridge pier column includes the following steps:

The pier column segment is prefabricated in a vertical manner, and after the prefabrication of the pier column segment is completed, it is turned into a horizontal type and moved to the splicing bracket;

The splicing between adjacent pier and column segments and the construction of the prestressing system are carried out on the assembled bracket;

Repeat the above steps until the horizontal assembly of piers and columns is completed.

In the above technical solution, preferably, the sliding track is provided with a jack arranged along the sliding track, and the jack cooperates with the hauling winch, and is used for connecting the moving trolley and the bridge pier column. Transfer to the transfer barge.

In the above technical solution, preferably, straightening the piers and columns, constructing the foundations of the piers and columns, and fixing the piers and piers on the foundations of the piers and columns at the designed pier positions, includes the following steps:

Use the floating crane to lift the top of the pier column, and continue to inject water into the pier column;

Using floating cranes and mooring cables, adjust the bottom of the pier column to the design pier position, and loosen the hook of the floating crane to make the bottom of the pier column seat;

Use floating cranes and mooring cables to straighten the piers and columns, construct the piers and piers foundations, and fix the piers and piers on the seabed foundation at the designed piers.

It can be known from the above technical solutions that the assembled reinforced concrete deep-water bridge pier and column and the horizontal installation method thereof provided by the present invention are used for bridge construction in the marine deep-water environment. Compared with the prior art, the present invention has the following beneficial effects:

First of all, the prefabricated reinforced concrete deep-water bridge pier and column provided by the present invention adopts a fully prestressed structure. Good durability; there is no exposed steel structure in the reinforced concrete structure of the piers and columns, which greatly reduces the maintenance cost of the anti-corrosion of the piers and columns.

Secondly, in the horizontal installation method of prefabricated reinforced concrete deep-water bridge piers and columns provided by the present invention, the prefabrication and splicing of the piers and piers segments of the bridges are completed in a land environment, which facilitates large-scale industrial production of the piers and piers and columns, and greatly reduces the cost of The manufacturing cost of the bridge section, and the land production environment is not easily affected by environmental loads such as currents, wind and waves in the marine environment, and has the advantages of good testing conditions, guaranteed product quality, and long construction period.

Finally, the horizontal installation method of the prefabricated reinforced concrete deep-water bridge piers and columns provided by the present invention uses barges to transport the bridge piers and piers as a whole to the vicinity of the piers, and utilizes marine buoyancy, marine floating cranes and mooring systems to carry out the overall rotation of the bridge piers and piers. Body construction and installation simplifies the construction steps of deep-water piers and columns at sea, eliminating the need for on-site pouring and assembling construction at sea, greatly shortening the time of offshore operations, and reducing the cost and safety risks of offshore operations.

Description of drawings

In order to describe the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce and describe the accompanying drawings that are required in the description of the embodiments of the present invention or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can also be obtained from these drawings without creative efforts.

Fig. 1 is the structural representation of prefabricated reinforced concrete deep-water pier in the present invention;

Figure 2 is a schematic cross-sectional view of a pier column segment of an assembled reinforced concrete deep-water bridge pier column in the present invention;

Fig. 3 is the horizontal assembly schematic diagram of the assembled reinforced concrete deep-water bridge pier column of the present invention;

Fig. 4 is a schematic diagram of the bridge pier barge moving, dragging and sliding launching in the present invention;

5 is a schematic diagram of the installation of the self-floating swivel body of a bridge pier in the present invention;

FIG. 6 is a schematic diagram of the fixed installation of the base of the bridge pier in the present invention.

In Figure 1-6, the correspondence between components and reference numerals is as follows:

Pier column 11, caisson 12, pier foundation 13,

Pier segment 2, concrete main body 21, stressed steel bar 22, connecting ferrule 23, embedded pipe 24, slot 25, water injection hole 27, water injection pipe 28,

Land prefabricated splicing yard 31 for piers and columns, splicing brackets 32, sliding rails 33, transfer trolleys 34, ramps 35, transfer barges 36, pier and column segments to be spliced 37, and pier and column segments that have been spliced 38 , Deck Slide 39.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The realization principle of the present invention is:

By setting a prestressed system in the pier column section of the reinforced concrete bridge, the pier column section of the bridge pier is spliced into a bridge pier column on the land, and a fully prestressed structure is formed in the bridge pier column, so that the reinforced concrete bridge pier column is always under pressure. state, thereby preventing it from cracking in a seawater environment.

When installing bridge piers and piers, the closed bridge piers and piers are carried by the transfer platform, and transferred from the wharf to the transfer barge by means of the slip track, and then the bridge piers and piers are transferred to the design pier position by the transfer barge, and the attitude of the transfer barge is adjusted to make the bridge piers and piers. Slip into the water to make it float on the water surface with its own buoyancy; inject water into the pier column through the water injection hole on the pier column, and use the floating crane and the buoyancy of the pier column to straighten the pier column and straighten it. The bridge piers are fixed on the foundations of the bridge piers.

The solution provided by the present invention can complete the installation of deep-water bridge piers and columns in the marine environment, realize the rapid installation and construction of deep-water bridge piers and columns, and effectively solve the problem that the construction of deep-water bridge piers and columns is greatly affected by marine environmental factors, construction economy is poor, and safety risks are high. The problem.

Specifically, the assembled reinforced concrete deep-water bridge pier column provided by the present invention includes:

A plurality of pier column segments, including a concrete main body and a reinforcement cage arranged in the concrete main body, the reinforcement cage is provided with stress-bearing steel bars, and the ends of the stress-bearing steel bars are arranged through the concrete main body, and the stress-bearing reinforcement bars are arranged in the concrete main body. The inner side of the end of the force steel bar is provided with a connecting ferrule; the two adjacent connecting ferrules are welded and fixed;

Prestressing system including:

A pre-buried pipeline is arranged in the concrete main body, and the pipeline grouting system is communicated with the pre-buried pipeline;

a notch is arranged at the end of the concrete main body, the notch is connected with the end of the embedded pipeline; the notch is provided with a prestressed rib;

An anchor is arranged in the slot, and the end of the prestressed tendon is connected with the anchor.

In order to explain and illustrate the technical solutions and implementation manners of the present invention more clearly, several preferred specific embodiments for realizing the technical solutions of the present invention are introduced below.

It should be noted that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly or indirectly disposed on the other element; when an element is referred to as being "connected" "to" another element, it may be directly connected to another element or indirectly connected to another element.

In addition, the terms "inside and outside", "front and rear", "left and right", "vertical, horizontal", "top, bottom", etc. in this document indicate the orientation or positional relationship based on those shown in the drawings. The orientation or positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the application .

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature.

Specific Example 1.

Please refer to FIG. 1 , which is a schematic structural diagram of the prefabricated reinforced concrete deep-water bridge pier column according to the present embodiment.

As shown in FIG. 1 , a deepwater bridge pier includes a pier column 11, a caisson 12 and a bridge pier foundation 13. The assembled reinforced concrete deepwater bridge pier column 11 provided by the present invention is formed by splicing a plurality of pier column segments 2. The pier column segment 2 There is a prestressing system inside.

The pier column segment 2 includes a concrete main body 21 and a reinforcement cage arranged in the concrete main body, and the reinforcement cage is composed of stress-bearing reinforcement bars 22 and structural reinforcement bars. The end of the stressed steel bar 22 is arranged through the concrete main body 21 , and the inner side of the end of the stressed steel bar 22 is provided with a connecting hoop 23 . The two adjacent connection ferrules 23 are welded and fixed.

The prestressing system includes a pre-embedded pipe 24, a slot 25 and an anchor. The pre-embedded pipe 24 is arranged in the concrete main body 21 and is completely wrapped by concrete. The pipeline grouting system is communicated with the embedded pipeline 24, and is used for grouting operation to the pipeline. The notch 25 is provided at the end of the concrete main body 21 , and the notch 25 is connected to the end of the embedded pipe 24 . A prestressed rib is arranged in the slot 25, the anchor is arranged in the slot 25, and the end of the prestressed rib is connected with the anchor. The length of the prestressed tendon is greater than the length of the concrete main body 21 of the pier segment 2, and the end of the prestressed tendon passes through at least one cross-section of the welding seam connecting the hoop 23 along the axial direction of the concrete main body 21, and is connected to the anchorage. with connection.

The bottom end of the pier column segment located at the bottom of the pier column includes the bottom end sealing plate; the top end of the pier column segment located at the top of the bridge pier column includes the top end sealing plate, and the top sealing plate is provided with a water injection hole, which can pass the water injection hole to the bridge pier. The pier column 11 is filled with water.

The pier column 11 is formed by splicing a plurality of pier column segments 2. The pier column segment 2 can be prefabricated on land and then spliced together without the need for the offshore pouring operation of the bridge pier, which greatly shortens the time of the offshore operation and avoids the need for pier piers. The quality of the column is affected by the environmental factors of offshore operation, which has good quality assurance and economic benefits; a prestressing system is installed in the pier column 11 of the bridge pier, and the pier column is kept in a compressed state through the prestressing system, avoiding the reinforced concrete structure of the pier column. cracking, so that it has high durability, which greatly reduces the maintenance cost of piers and columns.

Specific Example 2.

This specific embodiment 2 is based on the specific embodiment 1, and further optimization and improvement are made to the pier column 11 of the bridge pier.

There is also a joint leveling and protection structure on the joints of the two adjacent connecting ferrules 23 on the pier column 11. The joint leveling and protection structure includes a joint leveling layer and a welding seam protection layer. The joint leveling layer is set On the connecting end faces of the two adjacent connecting ferrules 23, it is used to level the gaps on the connecting end faces of the two connecting ferrules 23, eliminate air bubbles and holes in the welding seam, and improve the strength of the welding seam; the welding seam protective layer It is arranged on the outer side of the connection ferrule 23, and the weld protection layer is connected to the concrete main body on both sides of the joint, so that the weld protection layer covers the outer side of the connection ferrule 23, so that the connection ferrule 23 and the weld are on the bridge pier. There is no exposed steel structure on the side surface of the pier column 11 to avoid leakage of the connecting collar 23 and corrosion by seawater.

Through the welding seam leveling layer to avoid the uneven surface of the welding seam affecting the use, the welding seam is hidden in the welding seam protection layer through the welding seam protection layer, so that there is no exposed steel structure in the reinforced concrete structure of the pier and column, which greatly reduces the bridge pier. Maintenance costs for piers against corrosion.

Specific Example 3.

The present invention also provides a horizontal installation method for prefabricated reinforced concrete deep-water bridge piers, comprising the following steps:

S1. Prefabricate pier column segments on land, transfer the pier column segments to a transfer trolley, and splicing the pier column segments on the transfer trolley to form bridge pier columns;

Before the prefabricated pier and column segments on the land, it is necessary to select the pier pier and column land prefabrication splicing field 31, and construct the prefabrication equipment, splicing equipment and moving equipment. 32 on. The transfer equipment includes a skid rail 33, a transfer trolley 34 and a shipping dock.

The land prefabricated splicing field 31 of the piers and piers is provided with a ramp 35, and the sliding track 33 is arranged on the ramp 35. The lower end of the sliding track 33 is connected with the shipping wharf, and is vertically arranged with the shipping wharf, in a T shape, so as to facilitate the The transfer trolley 34 transfers the pier column 11 to the transfer barge 36 . The splicing bracket 32 is arranged on the transfer trolley 34 and is fixedly connected with the transfer trolley 34 . The transfer trolley 34 is arranged on the sliding rail 33, and is detachably connected to the sliding rail 33 through a temporary fixing device.

The pier and column segments are spliced into a bridge pier column, including the following steps:

S11. Prefabricate the pier column segment in a vertical manner. After the prefabrication of the pier column segment is completed, turn it into a horizontal type and run it to the splicing bracket 32;

S12. On the assembling bracket 32, the splicing between adjacent pier and column segments and the construction of the prestressing system are carried out;

As shown in FIG. 3 , after the prefabrication of each pier and column segment is completed, it can be transferred to the splicing bracket 32, and the pier column segment 37 to be spliced and the spliced pier column segment 38 on the splicing bracket 32 are spliced together, In this way, the prefabrication and splicing of the pier and column segments are carried out at the same time, and the construction efficiency of the pier and column is improved.

S13, repeating the above steps until the horizontal assembly and construction of the pier column 11 is completed.

S2. Dock the transfer barge 36 at the wharf, transfer the transfer trolley 34 and the pier pier 11 to the transfer barge 36 by using the slip rail 33 and the drag winch, and temporarily close the water injection hole on the top sealing plate of the pier pier 11;

Specifically, after the transfer barge 36 is docked at the wharf, the mooring cable of the barge is connected, and the end of the sliding track 33 is connected with the upper deck slideway 39 on the top of the transfer barge 36 to form a transfer channel for the transfer trolley 34 .

The sliding track 33 is provided with a jack arranged along the sliding track 33, the jack cooperates with the hauling winch, and is used to transfer the transfer trolley and the pier column to the transfer barge. After the hauling winch is in place, the wire rope of the hauling winch is connected to the transfer trolley 34 to release the temporary consolidation between the transfer trolley 34 and the sliding track 33. The transfer trolley 34 and the pier column 11 are transferred to the transfer barge 36 .

S3. Transfer the transfer trolley 34 and the pier column 11 to the sea area near the pier position by the transfer barge 36, and inject water into the pressurized water tank of the transfer barge 36, so that the rear end of the transfer barge 36 is inclined; The transfer trolley 34 slides into the sea, the bridge pier pier 11 floats on the sea surface, the transfer trolley 34 is separated from the bridge pier pier 11, and the transfer trolley 34 is recovered to the transfer barge 36;

Specifically, as shown in FIG. 4, the trolley mooring cable is connected to the transfer trolley 43, the bridge pier mooring cable is connected to the bridge pier pier column 11, and water is injected into the pressurized water tank of the transfer barge 36, so that the transfer barge 36 moves to the The rear end is inclined at an angle. Release the temporary fixed connection between the transfer trolley 34 and the transfer barge 36, and inject water into the water tank of the transfer barge 36, so that the transfer barge 41 continues to incline to the rear end; Make the bridge pier pier 11 and the transfer trolley 34 slide into the sea along the deck slideway 39, the bridge pier pier 11 floats on the sea surface, and the transfer trolley 34 is separated from the bridge pier pier 11, and the transfer trolley is moved by a floating crane 34 retracted to the deck of transfer barge 36, and returned to transfer barge 36.

S4. As shown in Figure 5, drag the pier pier 11 to the design pier position, adjust the attitude of the pier pier 11 so that the top of the pier pier 11 is higher than the bottom end of the pier pier 11; open the top of the pier pier 11 The water injection hole 27 of the sealing plate is filled with water into the water injection hole 27 of the pier column 11 through the water injection pipe 28, until the pier column 11 is close to the upright posture;

S5, straightening the pier pier 11, constructing the pier pier foundation 13, and fixing the pier pier 11 on the pier pier foundation 13 at the designed pier position.

Specifically, as shown in Figure 6, the following steps are included:

S51, using a floating crane to hoist the top of the pier column 11, and continue to inject water into the pier column 11;

S52. Using floating cranes and mooring cables, adjust the bottom of the pier column 11 to the design pier position, and loosen the hook of the floating crane to make the bottom of the pier column 11 of the bridge pier;

S53 , straightening the pier piers 11 by using the floating crane and mooring cables, constructing the pier pier foundations 13 , and fixing the pier piers 11 on the submarine foundation at the designed pier position.

The present invention solves the problem of unstable quality of deep-sea bridge piers and columns by prefabricating pier and column segments on a land prefabricated splicing field, and splicing the pier and column segments into bridge piers and columns, avoiding the sea pouring of piers and columns. The cost of piers will not rise sharply with the increase of water depth, which solves the problem of poor construction economy of the stated bridge piers; at the same time, the construction period and construction safety of land construction are less affected by the marine environment, which greatly shortens the construction period and improves the construction efficiency.

The piers and columns of the bridge are spliced horizontally, and are transferred to the transfer barge by transferring equipment such as transfer trolleys and sliding rails. The column is straightened and installed, which greatly reduces the installation difficulty of the bridge pier and pier column, reduces the time and workload of offshore operations during the construction of the bridge pier and pier column, and improves the construction efficiency.

Finally, it should also be noted that the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with this technology, and are not intended to limit this specification. The limitations of the application can be implemented, so it has no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the application can produce and the purpose that can be achieved, should still be used. It falls within the scope that the technical content disclosed in this application can cover.

The terms "comprising", "comprising" or any other variation thereof as used herein are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also no Other elements expressly listed, or elements inherent to such a process, method, article or apparatus are also included. Without further limitation, elements qualified by the statement "including a..." are not excluded from There are additional identical elements in a process, method, article or apparatus that includes the stated elements.

The present invention is not limited to the above-mentioned best embodiment, anyone should be aware of the structural changes made under the inspiration of the present invention, and all technical solutions that are the same or similar to the present invention fall within the protection scope of the present invention. Inside.

Claims (10)

1. a prefabricated reinforced concrete deep-water bridge pier column, is characterized in that, comprises: A plurality of pier column segments, including a concrete main body and a reinforcement cage arranged in the concrete main body, the reinforcement cage is provided with stressed reinforcement bars, and the ends of the stressed reinforcement reinforcement bars are arranged through the concrete main body, so The inner side of the end of the stressed steel bar is provided with a connecting ferrule; the two adjacent connecting ferrules are welded and fixed; Prestressing system including: A pre-buried pipeline is arranged in the concrete main body, and the pipeline grouting system is communicated with the pre-buried pipeline; a notch is arranged at the end of the concrete main body, the notch is connected with the end of the embedded pipeline; the notch is provided with a prestressed rib; An anchor is arranged in the slot, and the end of the prestressed tendon is connected with the anchor. 2. The prefabricated reinforced concrete deep-water bridge pier and column according to claim 1, characterized in that, a joint leveling and protection structure is also provided on the joints of the two adjacent connecting ferrules, and the joints Leveling and protection structures include: The joint leveling layer is arranged on the connecting end faces of the two adjacent connecting ferrules, and is used for leveling the welding seam; The welding seam protection layer is arranged on the outer side of the connection collar, and the welding seam protection layer is connected with the concrete main body on both sides of the joint. 3. The prefabricated reinforced concrete deep-water bridge pier column according to claim 1, wherein the length of the prestressed tendon is greater than the length of the concrete main body of one of the pier column segments, and the end of the prestressed tendon The part passes through at least one section of the welding seam of the connecting collar along the axial direction of the concrete main body, and is connected with the anchor. 4. The prefabricated reinforced concrete deep-water bridge pier column according to claim 1, wherein the bottom end of the pier column segment located at the bottom of the pier column comprises a bottom end sealing plate; The top end of the pier column segment located at the top of the pier column includes a top end sealing plate, and the top end sealing plate is provided with a water injection hole. 5. A horizontal installation method for prefabricated reinforced concrete deep-water bridge piers and columns, characterized in that, comprising the following steps: Prefabricate pier column segments on land, transfer the pier column segments to the transfer trolley, and splicing the pier column segments on the transfer trolley to form bridge pier columns; Dock the transfer barge at the wharf, transfer the transfer trolley and the pier column to the transfer barge by using the sliding track and the hauling winch, and temporarily close the water injection hole on the top sealing plate of the pier pier column; Transfer the transfer trolley and the pier column to the sea area near the pier position by the transfer barge, and inject water into the pressurized water tank of the transfer barge to tilt the rear end of the transfer barge; push the pier pier column and the transfer trolley to slide into the sea, The piers and columns of the bridge piers float on the sea surface, the transfer trolley is separated from the piers and columns of the bridge piers, and the transfer trolleys are recovered to the transfer barge; Drag the pier column to the design pier position, adjust the posture of the pier pier column so that the top of the pier pier column is higher than the bottom end of the pier pier column; Inject water until the piers and columns of the bridge are close to the upright posture; Straighten the piers and piers, construct the foundations of the piers and piers, and fix the piers and piers on the foundations of the piers at the designed piers. 6. The horizontal installation method of prefabricated reinforced concrete deep-water bridge piers and columns according to claim 5, characterized in that, before the prefabricated piers and column segments on the land, comprising the following steps: Select a land prefabricated splicing yard for bridge piers and piers, and construct prefabricated equipment, splicing equipment and moving equipment. The splicing equipment is a splicing bracket, and the moving equipment includes a sliding track, a moving trolley and a shipping dock. 7. The horizontal installation method for large-scale reinforced concrete deep-water bridge piers and columns according to claim 6, characterized in that, ramps are provided in the land prefabricated splicing yard for piers and piers, and the sliding rails are arranged at the On the ramp, the lower end of the sliding track is connected to the shipping dock, and is vertically arranged with the shipping dock; The splicing bracket is arranged on the transfer trolley and is fixedly connected with the transfer trolley; The transfer trolley is arranged on the sliding track, and is detachably connected to the sliding track through a temporary fixing device. 8. The horizontal installation method of prefabricated reinforced concrete deep-water bridge piers and columns according to claim 7, wherein the pier and column segments are spliced into bridge piers and columns, comprising the following steps: The pier column segment is prefabricated in a vertical manner, and after the prefabrication of the pier column segment is completed, it is turned into a horizontal type and moved to the splicing bracket; The splicing between adjacent pier and column segments and the construction of the prestressing system are carried out on the assembled bracket; Repeat the above steps until the horizontal assembly of piers and columns is completed. 9 . The horizontal installation method for prefabricated reinforced concrete deep-water bridge piers and columns according to claim 7 , wherein the sliding track is provided with a jack arranged along the sliding track, and the jack is connected to the sliding track. 10 . The hauling winch cooperates to transfer the transfer trolley and the pier column to the transfer barge. 10. The horizontal installation method of prefabricated reinforced concrete deep-water bridge piers and columns according to claim 5, wherein the piers and columns are straightened, the piers and columns are constructed, and the piers and columns are fixed at the designed pier positions The pier and pier foundation of the bridge includes the following steps: Use the floating crane to lift the top of the pier column, and continue to inject water into the pier column; Using floating cranes and mooring cables, adjust the bottom of the pier column to the design pier position, and loosen the hook of the floating crane to make the bottom of the pier column seat; Use floating cranes and mooring cables to straighten the piers and columns, construct the piers and piers foundations, and fix the piers and piers on the seabed foundation at the designed piers.

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