CN113481885B - Construction method of I-steel reinforced beam for bridge - Google Patents
Construction method of I-steel reinforced beam for bridge Download PDFInfo
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- CN113481885B CN113481885B CN202110827840.5A CN202110827840A CN113481885B CN 113481885 B CN113481885 B CN 113481885B CN 202110827840 A CN202110827840 A CN 202110827840A CN 113481885 B CN113481885 B CN 113481885B
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
According to the construction method of the I-steel reinforced beam for the bridge, provided by the invention, the left I-steel and the right I-steel are arranged as stress components, the beam is fixed between the left web plate and the right web plate, the fixed plate is arranged between the left upper flange and the right upper flange, and the supporting beam is arranged between the fixed plate and the fixed beam, so that the overall performance of the left I-steel and the right I-steel is realized, the square timber, the left supporting column and the right supporting column are arranged, the overall stress of a stress system is realized, and the local damage is avoided.
Description
Technical field: the invention relates to the field of bridge engineering, in particular to a construction method of an I-steel reinforced beam for a bridge.
The background technology is as follows: the bridge is a common traffic engineering structural form, an operation platform is generally required to be erected in the bridge construction process so as to realize construction operation, the existing operation platform is mainly provided with I-steel on a bearing platform or other stress platforms to serve as a stress component, and then square timber and the operation platform are arranged.
The single I-steel atress is single, and it bears the effort limited, and when having the condition, can set up two I-steel structures, if simple the assembling of two I-steel structures, it can't form wholly, and the effect is limited, to two I-steel structures need to study its whole atress performance, the reinforcing effect of full play two I-steel improves whole atress, guarantees the intensity safety of structure.
The invention comprises the following steps: the invention provides a construction method of an I-steel reinforced beam for a bridge, aiming at the problems of the prior art.
The invention provides a construction method of an I-steel reinforced beam for a bridge, wherein the reinforced beam adopts an I-steel structure, and the I-steel is used as a main stress part to form the reinforced beam, and the construction method is characterized in that: the reinforcing beam comprises left I-steel, right I-steel, square timber and a stressed beam, wherein the left I-steel comprises a left upper flange, a left web plate and a left lower flange, the right I-steel comprises a right upper flange, a right web plate and a right lower flange, the square timber is respectively positioned on the left I-steel and the left upper flange and the right upper flange of the right I-steel, the stressed beam is positioned on the square timber, and the construction method comprises the following steps:
s1: the left I-steel and the right I-steel are placed on a lower stress platform, a left lower flange and a right lower flange of the left I-steel and the right I-steel are respectively fixed on the upper surface of the lower stress platform, a left web plate and a right web plate of the left I-steel and the right I-steel are mutually perpendicular, and a gap is reserved between the left lower flange and the right lower flange;
s2: a fixed beam is arranged between the left web plate and the right web plate, the left end of the fixed beam is fixedly connected with the left web plate, the right end of the fixed beam is fixedly connected with the right web plate, and the fixed beam is horizontally arranged;
s3: a fixing plate is arranged between the left upper flange and the right upper flange, the upper surface of the fixing plate is flush with the lower surfaces of the left upper flange and the left lower flange, the left end of the fixing plate is fixedly connected with the right end of the left upper flange through a left fixing bolt, and the right end of the fixing plate is fixedly connected with the left end of the right upper flange through a right fixing bolt;
s4: a supporting beam, a left inclined supporting rod and a right inclined supporting rod are arranged between the fixed beam and the fixed plate, wherein the supporting beam is vertically arranged, the upper part of the supporting beam is fixedly connected with the lower surface of the fixed plate, the lower part of the supporting beam is fixedly connected with the upper surface of the fixed beam, the upper part of the left inclined supporting rod is fixedly connected with the left lower surface of the fixed plate, the lower part of the left inclined supporting rod is fixedly connected with the joint of the fixed beam and the left web plate, the upper part of the right inclined supporting rod is fixedly connected with the right lower surface of the fixed plate, and the lower part of the right inclined supporting rod is fixedly connected with the joint of the fixed beam and the right web plate;
s5: a plurality of square timbers are arranged on the upper surface of the left upper flange, a plurality of square timbers are arranged on the upper surface of the right upper flange, the square timbers on the left upper flange are flush with the square timbers on the right upper flange, a left support column and a right support column are arranged on the fixing plate, a gap is arranged between the left support column and the right support column, and the upper surfaces of the left support column and the right support column are flush with the upper surfaces of the square timbers;
s6: the upper surfaces of the square timber, the left support column and the right support column are provided with stress beams, the left ends of the stress beams are positioned on the left side of the left end of the left upper flange, and the right ends of the stress beams are positioned on the right side of the right end of the right upper flange;
s7: the left end of atress roof beam sets up left sloping the right-hand member of atress roof beam sets up right sloping, the upper end of left side sloping with the atress roof beam is located the lower fixed surface of the left side part of left upper flange left end is connected, the lower extreme of left side sloping with the upper fixed surface of the left side of left lower flange is connected, the upper end of right sloping with the atress roof beam is located the lower fixed surface of the right side part of right upper flange right-hand member is connected, the lower extreme of right sloping with the upper fixed surface of the right side of right lower flange is connected.
Preferably, the center lines of the left support column and the right support column in the vertical direction are respectively positioned at the left side and the right side of the center line of the support beam in the vertical direction.
Preferably, a support member is provided between the reinforcing beam and the left and right lower flanges.
Preferably, the square timber on the left upper flange is arranged at equal intervals, and the square timber on the right upper flange is arranged at equal intervals.
Preferably, the left oblique beam and the right oblique beam may be selected to be symmetrically arranged or asymmetrically arranged.
Preferably, the left diagonal member and the right diagonal member are made of steel.
The working principle of the invention is as follows:
the double I-steel is arranged as a stress component, the stress transmission effect of the double I-steel is improved by utilizing the double I-steel, and the damage to the web plate caused by concentrated stress of a single I-steel is avoided;
a fixed beam is arranged between the left web plate and the right web plate, the left I-steel and the right I-steel are connected into a whole, local stress is avoided, a fixed plate is arranged between the left upper flange and the right upper flange, a left fixed bolt and a right fixed bolt are arranged between the fixed plate and the left upper flange and between the fixed plate and the right upper flange, the fixation of the fixed plate and the left upper flange and the right upper flange is realized, and a supporting beam, a left inclined supporting rod and a right inclined supporting rod are arranged between the fixed plate and the fixed beam, so that an indeterminate supporting stress system is formed, and the acting force of the fixed plate is also transmitted to the fixed beam and the left web plate and the right web plate;
the square timber is arranged on the left upper flange and the right upper flange, the left support column and the right support column are arranged on the fixed plate to form an integral stress system, stress beams are arranged on the square timber, the left support column and the right support column, after the stress beams are stressed, acting force is uniformly transmitted to the square timber, the left support column and the right support column, the acting force is transmitted to the fixed plate by the left support column and the right support column, the fixed plate is fixedly connected with the left upper flange and the right upper flange to form the integral stress system, and the lower part of the fixed plate is connected with the left web plate, the right web plate and the fixed beam through the support beam and the left diagonal support rod and the right diagonal support rod;
the left support column and the right support column can be selected to be rubber column structures, flexible stress can be achieved through the rubber column structures, and especially when the stress Liang Liyong rubber column transmits acting force downwards, local rigidity damage can be avoided, elastic change of the flexible column can be borne, and stress effect of the structure can be guaranteed.
The left and right ends of the stress beam are positioned outside the left upper flange and the right upper flange, the two sides of the stress beam are respectively connected with the left lower flange and the right lower flange to form a opposite-pull structure system, the left oblique beam and the right oblique beam can be prestressed reinforcement structures, the tension effect on the stress beam is formed, the structure is prevented from generating displacement, and the integral stress of the structure can be effectively ensured.
The invention has the advantages that:
according to the construction method of the I-steel reinforced beam for the bridge, provided by the invention, the left I-steel and the right I-steel are arranged as stress components, the beam is fixed between the left web plate and the right web plate, the fixed plate is arranged between the left upper flange and the right upper flange, and the supporting beam is arranged between the fixed plate and the fixed beam, so that the overall performance of the left I-steel and the right I-steel is realized, the square timber, the left supporting column and the right supporting column are arranged, the overall stress of a stress system is realized, and the local damage is avoided.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of a fixing plate and a fixing beam arrangement.
The specific embodiment is as follows: the following is a specific explanation of the structure defined by the present invention with reference to the drawings.
The invention provides a construction method of an I-steel reinforced beam for a bridge, wherein the reinforced beam adopts an I-steel structure, and the I-steel is used as a main stress part to form the reinforced beam, and the construction method is characterized in that: the reinforcing beam comprises a left I-steel 1, a right I-steel 2, square lumber 3 and a stress beam 4, wherein the left I-steel 1 comprises a left upper flange 11, a left web 12 and a left lower flange 13, the right I-steel 2 comprises a right upper flange 21, a right web 22 and a right lower flange 23, the square lumber 3 is respectively positioned on the left I-steel 1, the left upper flange 11 and the right upper flange 21 of the right I-steel 2, the stress beam 4 is positioned on the square lumber 3, and the construction method comprises the following steps:
s1: the left I-steel 1 and the right I-steel 2 are placed on the lower stress platform 5, a left lower flange 13 and a right lower flange 23 of the left I-steel 1 and the right I-steel 2 are respectively fixed on the upper surface of the lower stress platform 5, a left web 12 and a right web 22 of the left I-steel 1 and the right I-steel 2 are mutually perpendicular, and a gap is reserved between the left lower flange 13 and the right lower flange 23;
s2: a fixed beam 6 is arranged between the left web plate 12 and the right web plate 22, the left end of the fixed beam 6 is fixedly connected with the left web plate 12, the right end of the fixed beam 6 is fixedly connected with the right web plate 22, and the fixed beam 6 is horizontally arranged;
s3: a fixing plate 7 is arranged between the left upper flange 11 and the right upper flange 21, the upper surface of the fixing plate 7 is flush with the lower surfaces of the left upper flange 11 and the left lower flange 13, the left end of the fixing plate 7 is fixedly connected with the right end of the left upper flange 11 through a left fixing bolt 8, and the right end of the fixing plate 7 is fixedly connected with the left end of the right upper flange 21 through a right fixing bolt 9;
s4: a support beam 61, a left diagonal support rod 62 and a right diagonal support rod 63 are arranged between the fixed beam 6 and the fixed plate 7, wherein the support beam 61 is vertically arranged, the upper part of the support beam 61 is fixedly connected with the lower surface of the fixed plate 7, the lower part of the support beam 61 is fixedly connected with the upper surface of the fixed beam 6, the upper part of the left diagonal support rod 62 is fixedly connected with the left lower surface of the fixed plate 7, the lower part of the left diagonal support rod 62 is fixedly connected with the joint of the fixed beam 6 and the left web 12, the upper part of the right diagonal support rod 63 is fixedly connected with the right lower surface of the fixed plate 7, and the lower part of the right diagonal support rod 63 is fixedly connected with the joint of the fixed beam 6 and the right web 22;
s5: a plurality of square timber 3 are arranged on the upper surface of the left upper flange 11, a plurality of square timber 3 are arranged on the upper surface of the right upper flange 21, the square timber 3 on the left upper flange 11 is flush with the square timber 3 on the right upper flange 21, a left support column 101 and a right support column 102 are arranged on the fixed plate 7, a gap is arranged between the left support column 101 and the right support column 102, and the upper surfaces of the left support column 101 and the right support column 102 are flush with the upper surfaces of the square timber 3;
s6: a stress beam 4 is arranged on the upper surfaces of the square timber 3, the left support column 101 and the right support column 102, the left end of the stress beam 4 is positioned at the left side of the left end of the left upper flange 11, and the right end of the stress beam 4 is positioned at the right side of the right end of the right upper flange 21;
s7: the left end of the stress beam 4 is provided with a left inclined beam 14, the right end of the stress beam 4 is provided with a right inclined beam 15, the upper end of the left inclined beam 14 is fixedly connected with the lower surface of the left part of the stress beam 4, which is positioned at the left end of the left upper flange 11, the lower end of the left inclined beam 14 is fixedly connected with the upper surface of the left side of the left lower flange 13, the upper end of the right inclined beam 15 is fixedly connected with the lower surface of the right part of the stress beam 4, which is positioned at the right end of the right upper flange 21, and the lower end of the right inclined beam 15 is fixedly connected with the upper surface of the right side of the right lower flange 23.
Preferably, the center lines of the left support column 101 and the right support column 102 in the vertical direction are respectively located at the left side and the right side of the center line of the support beam 61 in the vertical direction, and the symmetrical arrangement can form a relatively balanced stress mode, so that one side is prevented from being stressed, for example, pressure or tension, and structural damage caused by overlarge stress is avoided, and if one side of the reinforcing structure bears a fixed acting force, and the fixed acting force is an asymmetric structure, the left support column 101 and the right support column 102 can be arranged into an asymmetric structure, so that force bearing is realized, and stress effect is improved;
preferably, a supporting component is arranged between the reinforcing beam and the left lower flange 13 and the right lower flange 23, and the supporting component can be selected as a supporting connecting beam, for example, an upper supporting connecting beam and a lower supporting connecting beam are arranged, wherein the upper supporting connecting beam and the lower supporting connecting beam are arranged in parallel and are connected between the left lower flange 13 and the right lower flange 23, and compared with a single supporting connecting beam which is arranged independently, a truss system formed by the supporting component is more favorable for bearing acting force and improving supporting effect;
preferably, the square lumber 3 on the left upper flange 11 is arranged at equal intervals, and the square lumber 3 on the right upper flange 21 is arranged at equal intervals.
Preferably, the left diagonal member 14 and the right diagonal member 15 may be selected to be symmetrically disposed or asymmetrically disposed.
Preferably, the left oblique beam 14 and the right oblique beam 15 may be made of steel, the left oblique beam 14 and the right oblique beam 15 bear a main oblique acting force, which has a high requirement on strength, and the left oblique beam 14 and the right oblique beam 15 may further include an upper oblique pull rod, a middle pull rod and a lower oblique pull rod, where two ends of the middle pull rod are provided with threaded ends, and the middle pull rod is used to implement addition of prestress, and this stressing manner is a common prestress reinforcement manner, by applying prestress, the acting force can be effectively improved, but the upper oblique pull rod and the lower oblique pull rod need to be firmly fixed between the flange and the stressed beam 4, preferably by a bolt manner, for example, by a manner of matching a backing plate with a bolt.
The above-described embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be construed as being limited to the specific forms set forth by the examples, but also includes equivalent technical means as will occur to those skilled in the art based on the inventive concept.
Claims (5)
1. The utility model provides a construction method of I-steel reinforcing beam for bridge, the reinforcing beam adopts the I-steel structure, utilizes the I-steel as main atress part to form the reinforcing beam, its characterized in that: the reinforcing beam comprises left I-steel, right I-steel, square timber and a stressed beam, wherein the left I-steel comprises a left upper flange, a left web plate and a left lower flange, the right I-steel comprises a right upper flange, a right web plate and a right lower flange, the square timber is respectively positioned on the left I-steel and the left upper flange and the right upper flange of the right I-steel, the stressed beam is positioned on the square timber, and the construction method comprises the following steps:
s1: the left I-steel and the right I-steel are placed on a lower stress platform, a left lower flange and a right lower flange of the left I-steel and the right I-steel are respectively fixed on the upper surface of the lower stress platform, a left web plate and a right web plate of the left I-steel and the right I-steel are mutually perpendicular, and a gap is reserved between the left lower flange and the right lower flange;
s2: a fixed beam is arranged between the left web plate and the right web plate, the left end of the fixed beam is fixedly connected with the left web plate, the right end of the fixed beam is fixedly connected with the right web plate, and the fixed beam is horizontally arranged;
s3: a fixing plate is arranged between the left upper flange and the right upper flange, the upper surface of the fixing plate is flush with the lower surfaces of the left upper flange and the left lower flange, the left end of the fixing plate is fixedly connected with the right end of the left upper flange through a left fixing bolt, and the right end of the fixing plate is fixedly connected with the left end of the right upper flange through a right fixing bolt;
s4: a supporting beam, a left inclined supporting rod and a right inclined supporting rod are arranged between the fixed beam and the fixed plate, wherein the supporting beam is vertically arranged, the upper part of the supporting beam is fixedly connected with the lower surface of the fixed plate, the lower part of the supporting beam is fixedly connected with the upper surface of the fixed beam, the upper part of the left inclined supporting rod is fixedly connected with the left lower surface of the fixed plate, the lower part of the left inclined supporting rod is fixedly connected with the joint of the fixed beam and the left web plate, the upper part of the right inclined supporting rod is fixedly connected with the right lower surface of the fixed plate, and the lower part of the right inclined supporting rod is fixedly connected with the joint of the fixed beam and the right web plate;
s5: a plurality of square timbers are arranged on the upper surface of the left upper flange, a plurality of square timbers are arranged on the upper surface of the right upper flange, the square timbers on the left upper flange are flush with the square timbers on the right upper flange, a left support column and a right support column are arranged on the fixing plate, a gap is arranged between the left support column and the right support column, and the upper surfaces of the left support column and the right support column are flush with the upper surfaces of the square timbers;
s6: the upper surfaces of the square timber, the left support column and the right support column are provided with stress beams, the left ends of the stress beams are positioned on the left side of the left end of the left upper flange, and the right ends of the stress beams are positioned on the right side of the right end of the right upper flange;
s7: the left end of atress roof beam sets up left sloping the right-hand member of atress roof beam sets up right sloping, the upper end of left side sloping with the atress roof beam is located the lower fixed surface of the left side part of left upper flange left end is connected, the lower extreme of left side sloping with the upper fixed surface of the left side of left lower flange is connected, the upper end of right sloping with the atress roof beam is located the lower fixed surface of the right side part of right upper flange right-hand member, the lower extreme of right sloping with the upper fixed surface of the right side of right lower flange is connected, left support column with the central line of right support column vertical direction is located respectively the left and right sides of support beam vertical direction central line.
2. The method of constructing a beam for bridge i-steel reinforcement according to claim 1, wherein: and a supporting part is arranged between the reinforcing beam and the left lower flange and between the reinforcing beam and the right lower flange.
3. The method of constructing a beam for bridge i-steel reinforcement according to claim 1, wherein: square timber on the left upper flange is arranged at equal intervals, and square timber on the right upper flange is arranged at equal intervals.
4. The method of constructing a beam for bridge i-steel reinforcement according to claim 1, wherein: the left oblique beam and the right oblique beam are symmetrically arranged or asymmetrically arranged.
5. The method of constructing a beam for bridge i-steel reinforcement according to claim 1, wherein: the left inclined beam and the right inclined beam are made of steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110827840.5A CN113481885B (en) | 2021-07-18 | 2021-07-18 | Construction method of I-steel reinforced beam for bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110827840.5A CN113481885B (en) | 2021-07-18 | 2021-07-18 | Construction method of I-steel reinforced beam for bridge |
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| Publication Number | Publication Date |
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| CN113481885A CN113481885A (en) | 2021-10-08 |
| CN113481885B true CN113481885B (en) | 2023-06-30 |
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| CN202110827840.5A Active CN113481885B (en) | 2021-07-18 | 2021-07-18 | Construction method of I-steel reinforced beam for bridge |
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| CN114182694B (en) * | 2021-12-27 | 2022-10-04 | 黄河水利委员会黄河水利科学研究院 | Gate beam reinforcing and supporting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202416183U (en) * | 2011-12-23 | 2012-09-05 | 中铁十九局集团第五工程有限公司 | Bent cap collar-clamp type cast support |
| CN203923913U (en) * | 2014-05-19 | 2014-11-05 | 东风设计研究院有限公司 | The load formula carrier structure of Bridge High-pier bent cap |
| CN207419287U (en) * | 2017-11-10 | 2018-05-29 | 长安大学 | A kind of steel construction combined member for being used to replace bridge pad |
| CN211036639U (en) * | 2019-09-20 | 2020-07-17 | 中国建筑第七工程局有限公司 | Municipal administration road local reinforcement structure |
| CN212247894U (en) * | 2020-05-17 | 2020-12-29 | 北京市政建设集团有限责任公司 | A concrete placement support device for steel-concrete composite beam |
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