Bridge pier tie beam structure and its construction method

Abstract

The present invention discloses a pier tie beam structure and a construction method thereof, which relate to the field of bridge technology. The pier tie beam structure comprises: a cap beam; a first pier column and a second pier column connected below the cap beam to support the cap beam, the first pier column having a bottom located at the bottom of a cliff, and the second pier column having a bottom located at the top of the cliff; a tie beam and an anchoring unit, wherein one end of the tie beam is connected to the first pier column, and the other end of the tie beam is fixed to the side wall of the cliff via the anchoring unit. This application can solve the problem in mountainous bridges where the same pier needs to be provided with bridge piers at the top and bottom of a cliff with a large height difference, and the tie beam connection cannot be performed, and the stability and safety of the higher pier at the bottom of the cliff cannot be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and in particular to a pier tie beam structure and a construction method thereof. Background Art

[0002] Currently, expressway construction is progressing rapidly. For mountain bridges, where the same piers are located at the top and bottom of a cliff with a significant height difference, these issues are addressed through adjusting the bridge span, adding curves to the route, and even blasting and excavating the mountain. However, adjusting the bridge span and adding curves to the route will increase the bridge span, length, and route length, thereby increasing construction costs. Blasting and excavating the mountain will increase the amount of engineering work, harm ecological protection, and increase investment, running counter to the current concept of green conservation.

[0003] Under the premise that special locations cannot be avoided and both economic efficiency and safety are taken into consideration, the same bridge pier must be installed at the top and bottom of the cliff, where the height difference is large. However, the longer pier at the bottom of the cliff cannot be effectively connected to the shorter pier at the top of the cliff through a tie beam, thus failing to ensure the stability and safety of the longer pier at the bottom of the cliff. Therefore, a new pier tie beam structure is needed to solve this problem. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a pier tie beam structure and a construction method thereof, which can solve the problem that the same pier in mountain bridges needs to be set up at the top and bottom of a cliff with a large height difference, and the tie beam connection cannot be performed, and the stability and safety of the higher pier at the bottom of the cliff cannot be guaranteed.

[0005] The specific technical solution of the embodiment of the present invention is:

[0006] A bridge pier tie beam structure, comprising:

[0007] cap beam;

[0008] A first pier and a second pier connected below the cap beam to support the cap beam, wherein the bottom of the first pier is located at the bottom of the cliff, and the bottom of the second pier is located at the top of the cliff;

[0009] A tie beam and an anchoring unit, wherein one end of the tie beam is connected to the first pier column, and the other end of the tie beam is fixed to the side wall of the cliff through the anchoring unit.

[0010] Preferably, the tie beam extends in the horizontal direction, and in the height direction, the tie beam is located below the bottom of the second pier column.

[0011] Preferably, the anchoring unit comprises: a plurality of anchoring holes drilled at the side wall of the cliff, anchoring pieces partially buried in the anchoring holes, and grouting material poured into the anchoring holes.

[0012] Preferably, the anchor comprises a steel bar.

[0013] Preferably, the tie beam includes tie beam main bars and tie beam concrete, one end of the tie beam main bars is connected to the steel bar, and the steel bar and the tie beam main bars located outside the anchor hole are cast in the tie beam concrete.

[0014] Preferably, one end of the tie beam main reinforcement is connected to the steel bar by staggered welding.

[0015] Preferably, the other end of the tie beam main reinforcement extends into the first pier column.

[0016] Preferably, the extending direction of the anchor hole is the same as the extending direction of the tie beam.

[0017] A construction method for a bridge pier tie beam structure as described above, comprising:

[0018] Build tie beam formwork;

[0019] Trim the side walls of the cliffs where anchoring units are to be built to remove loose surface layers;

[0020] Anchor holes are opened on the side walls of the cliff corresponding to the positions of the main reinforcement inside the tie beam;

[0021] After the anchor hole reaches the required depth, the anchor is implanted into the anchor hole, and the grouting material is poured into the gap between the anchor and the anchor hole;

[0022] embedding one end of the main reinforcement of the tie beam in the first pier column, and connecting the other end of the main reinforcement of the tie beam to the anchor member located outside the anchor hole;

[0023] The stirrups in the tie beam are tied to form a steel skeleton of the tie beam, the concrete of the tie beam is poured, and the anchoring piece located outside the anchor hole is poured into the tie beam concrete.

[0024] Preferably, the anchoring piece comprises a steel bar, and the main reinforcement of the tie beam is connected to the steel bar by staggered welding.

[0025] The technical solution of the present invention has the following significant beneficial effects:

[0026] First: The bridge pier tie beam structure and construction method thereof in the present application can connect the first pier column and the side wall of the cliff to form an integral whole through the anchoring unit, thereby effectively ensuring the stability of the first pier column.

[0027] Second: The use of the pier-beam structure and its construction method in this application can avoid adjusting the bridge span and adding curves to the route, which will lead to an increase in the bridge beam span, length, and route length, thereby solving the problem of increased project cost and investment.

[0028] Third: The pier tie beam structure in this application is simple, the construction method is quick and convenient, the construction cost can be effectively controlled, and there are no other difficult technical problems.

[0029] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0031] Figure 1 2. It is an overall schematic diagram of the pier tie beam structure in an embodiment of the present invention;

[0032] Figure 2 This is a front view of the anchoring unit in an embodiment of the present invention;

[0033] Figure 3 It is a left view of the anchoring unit in an embodiment of the present invention;

[0034] Figure 4 It is a front view of a part of the pier tie beam structure in an embodiment of the present invention;

[0035] Figure 5 It is a top view of a portion of the pier tie beam structure in an embodiment of the present invention.

[0036] Reference numerals in the above drawings:

[0037] 1. Cliff; 11. Cliff top; 12. Cliff bottom; 13. Side wall; 2. Cap beam; 3. First pier; 4. Second pier; 5. Tie beam; 51. Tie beam main reinforcement; 6. Anchor unit; 61. Anchor hole; 62. Anchor piece. DETAILED DESCRIPTION

[0038] The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are for illustrative purposes only and are not to be construed as limiting the present invention in any way. Based on the teachings of the present invention, skilled artisans can conceive of any possible variations based on the present invention, all of which should be considered within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, internal communication between two elements, direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] In order to solve the problem that the same pier in mountainous areas needs to be set up at the top and bottom of the cliff with a large height difference, it is impossible to connect the piers with tie beams, and it is impossible to ensure the stability and safety of the higher piers at the bottom of the cliff 12, a pier tie beam structure is proposed in this application. Figure 1 FIG. 1 is an overall schematic diagram of the pier tie beam structure according to an embodiment of the present invention. Figure 1 As shown, the pier tie beam structure may include: a cap beam 2; a first pier column 3 and a second pier column 4 connected below the cap beam 2 to support the cap beam 2; a tie beam 5 and an anchor unit 6, one end of the tie beam 5 is connected to the first pier column 3, and the other end of the tie beam 5 is fixed to the side wall 13 of the cliff 1 through the anchor unit 6.

[0041] Among them, such as Figure 1As shown, the first pier 3 and the second pier 4 extend vertically and are generally parallel to each other. The bottom of the first pier 3 is located at the cliff base 12, while the bottom of the second pier 4 is located at the cliff top 11. Therefore, there is a significant height difference between the bottoms of the first pier 3 and the second pier 4. Horizontally, at least a portion of the sidewall 13 of the cliff 1 is located between the first pier 3 and the second pier 4. Due to the significant height difference between the bottoms of the first pier 3 and the second pier 4, the second pier 4 cannot extend vertically to the position corresponding to the tie beam 5 connected to the first pier 3. In other words, the tie beam 5 extends generally horizontally and is located vertically below the bottom of the second pier 4. This structure leaves no place for the other end of the tie beam 5 to be connected and fixed. If the other end of the tie beam 5 cannot be fixed, the first pier 3, due to its long vertical length, can reach all the way from the cliff top 11 to the cliff base 12, thus effectively failing to ensure the stability of the first pier 3. Therefore, the other end of the tie beam 5 is fixed to the side wall 13 of the cliff 1 through the anchoring unit 6 , and the other end of the tie beam 5 is fixed by utilizing the side wall 13 of the cliff 1 .

[0042] As feasible, Figure 2 This is a front view of the anchoring unit in an embodiment of the present invention. Figure 3 This is a left view of the anchoring unit in the embodiment of the invention, as shown in FIG. Figure 2 and Figure 3 As shown, the anchoring unit 6 may include: a plurality of anchoring holes 61 drilled in the side wall 13 of the cliff 1, anchors 62 partially embedded in the anchoring holes 61, and grouting material poured into the anchoring holes 61. The high-strength grouting material allows the anchors 62 and the anchoring holes 61 to be integrated and firmly connected.

[0043] Furthermore, the anchoring member 62 may include a steel bar. For example, in order to further improve the firmness of the connection between the steel bar and the anchor hole, the steel bar may be a threaded steel bar.

[0044] Alternatively, tie beam 5 may include tie beam main bars 51 and tie beam concrete. At least a portion of tie beam main bars 51 extends along the extension direction of tie beam 5. One end of tie beam main bars 51 is connected to the steel bars in anchor unit 6. The steel bars outside anchor holes 61 and tie beam main bars 51 are cast in the tie beam concrete, thereby fully ensuring the connection strength between tie beam 5 and anchor unit 6.

[0045] As feasible, Figure 4 and Figure 5As shown, one end of the tie beam main reinforcement 51 is connected to the steel bars via staggered welding. The greater the overlap between the tie beam main reinforcement 51 and the steel bars in the anchor unit 6, the stronger the connection between the two after welding. In particular, the primary force between the two is tensile along the extension direction of the tie beam 5. This method can effectively improve the tensile strength between the two. The other end of the tie beam main reinforcement 51 can extend into the first pier 3, thereby being cast together with the first pier 3. The tie beam 5 can be integrated with the first pier 3, which can effectively improve the connection strength between the tie beam 5 and the first pier 3.

[0046] As feasible, Figure 4 and Figure 5 As shown, the extension direction of the anchor hole 61 can be the same as the extension direction of the tie beam 5, so that the steel bars inserted into the anchor hole 61 can be easily connected to the main bars 51 of the tie beam.

[0047] The number and distribution of the anchor holes 61 may correspond to the number and distribution of the tie beam main bars 51 in the tie beam 5 , thereby ensuring that the anchors 62 in the anchor holes 61 are conveniently and quickly connected to the tie beam main bars 51 .

[0048] This application also proposes a construction method for the above-mentioned bridge pier tie beam structure, which may include the following steps:

[0049] Build the tie beam formwork. As a practical option, a triangular support system can be constructed using the steel brackets and diagonal braces pre-buried in the first pier 3 to the bottom elevation of the tie beam 5. This foundation allows for the convenient construction of the tie beam formwork. The tie beam formwork extends all the way to the sidewall 13 of the cliff 1.

[0050] The sidewalls 13 of the cliff 1 corresponding to the areas where the anchoring units 6 are to be constructed are trimmed to remove the loose surface layer. Since the tie beam formwork is first constructed and extends to the sidewalls 13 of the cliff 1, the construction workers can trim the sidewalls 13 of the cliff 1 inside the tie beam formwork to remove the loose surface layer, thereby preventing the anchors 62 from being unable to securely connect to the sidewalls 13 of the cliff 1 later.

[0051] Anchor holes 61 are opened on the sidewall 13 of the cliff 1 according to the position of the main reinforcement 51 of the tie beam 5. Construction personnel can construct anchor holes 61 on the sidewall 13 of the cliff 1 according to the calculated depth based on the diameter, number, and position of the main reinforcement of the tie beam 5 inside the tie beam template until the required depth is reached.

[0052] After the anchor hole 61 reaches the required depth, the anchor 62 is implanted into the anchor hole 61, and grouting material is poured into the gap between the anchor 62 and the anchor hole 61. The high-strength grouting material allows the anchor 62 and the anchor hole 61 to be integrated and firmly connected.

[0053] One end of the main reinforcement of the tie beam 5 is embedded in the first pier 3, and the other end of the main reinforcement of the tie beam 5 is connected to the anchor 62 located outside the anchor hole 61. As an option, when the anchor 62 includes a steel bar, the main reinforcement of the tie beam 51 and the steel bar can be connected by offset welding.

[0054] The stirrups in the tie beam 5 are tied to form the steel skeleton of the tie beam 5, and the concrete of the tie beam 5 is poured, and the anchors 62 located outside the anchor holes 61 are poured into the tie beam concrete. At the same time, the connection between the tie beam 5 and the first pier 3 can also be poured together, so that the two are formed into one.

[0055] This application may have the following advantages:

[0056] First: The bridge pier tie beam structure and construction method thereof in the present application can connect the first pier column 3 and the side wall 13 of the cliff 1 to form an integral whole through the anchoring unit 6 , thereby effectively ensuring the stability of the first pier column 3 .

[0057] Second: The use of the pier-beam structure and its construction method in this application can avoid adjusting the bridge span and adding curves to the route, which will lead to an increase in the bridge beam span, length, and route length, thereby solving the problem of increased project cost and investment.

[0058] Third: The pier tie beam structure in this application is simple, the construction method is quick and convenient, the construction cost can be effectively controlled, and there are no other difficult technical problems.

[0059] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "essentially consisting of..." describing a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps herein also contemplates an embodiment that is essentially composed of these elements, ingredients, parts or steps. By using the term "may", it is intended to illustrate that any attribute described that "may" include is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0060] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pier tie beam structure, characterized in that: The pier tie beam structure comprises: cap beam; A first pier and a second pier connected below the cap beam to support the cap beam, wherein the bottom of the first pier is located at the bottom of the cliff, and the bottom of the second pier is located at the top of the cliff; a tie beam and an anchoring unit, wherein one end of the tie beam is connected to the first pier column, and the other end of the tie beam is fixed to the side wall of the cliff through the anchoring unit; The tie beam extends in the horizontal direction, and in the height direction, the tie beam is located below the bottom of the second pier; the anchoring unit includes: a plurality of anchoring holes drilled at the side wall of the cliff, anchors partially buried in the anchoring holes, and grouting material poured into the anchoring holes; the anchors include steel bars; the tie beam includes tie beam main bars and tie beam concrete, one end of the tie beam main bars is connected to the steel bars, and the steel bars and tie beam main bars located outside the anchoring holes are cast in the tie beam concrete; the extension direction of the anchoring holes is the same as the extension direction of the tie beam.

2. The pier tie beam structure according to claim 1, characterized in that: One end of the tie beam main reinforcement is connected to the steel bar by staggered welding.

3. The pier tie beam structure according to claim 1, characterized in that: The other end of the tie beam main reinforcement extends into the first pier column.

4. A construction method for a pier tie beam structure according to any one of claims 1 to 3, characterized in that: The construction method comprises: Build tie beam formwork; Trim the side walls of the cliffs where anchoring units are to be built to remove loose surface layers; Anchor holes are opened on the side walls of the cliff corresponding to the positions of the main reinforcement inside the tie beam; After the anchor hole reaches the required depth, the anchor is implanted into the anchor hole, and the grouting material is poured into the gap between the anchor and the anchor hole; embedding one end of the main reinforcement of the tie beam in the first pier column, and connecting the other end of the main reinforcement of the tie beam to the anchor member located outside the anchor hole; The stirrups in the tie beam are tied to form a steel skeleton of the tie beam, the concrete of the tie beam is poured, and the anchoring piece located outside the anchor hole is poured into the tie beam concrete.

5. The construction method according to claim 4, characterized in that: The anchoring piece includes a steel bar, and the main reinforcement of the tie beam is connected to the steel bar by staggered welding.

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