A truss bracket device for block 0 and block 1 and a construction method thereof

Abstract

The present invention discloses a truss bracket device for block 0 and block 1 and a construction method thereof, the device comprises a first group of truss structures and a second group of truss structures, the first group of truss structures and the second group of truss structures both comprise a transverse truss, a vertical truss and a lower torsion bar, and an upper torsion bar and an upper truss, the lower torsion bar and the upper torsion bar are both retractable; the method comprises the following steps: 1. pre-embedded fine-rolled threaded steel bars during construction of the top of the bridge pier; 2. splicing of the truss structure; 3. hoisting of the truss structure; 4. installation of the first group of brackets and the second group of brackets; 5. adjustment and anchoring of the first group of truss structures; 6. adjustment and anchoring of the second group of truss structures; 7. laying of I-shaped wood distribution beams and installation of bottom molds; 8. steel bar binding and concrete pouring of block 0 and block 1. The present invention has multiple truss structures that are convenient to install and disassemble as a whole and can be reused, reducing manpower and material resources and improving the adaptability of the truss structure bracket.

Description

Technical Field

[0001] The present invention belongs to the technical field of No. 0 block and No. 1 block brackets, and in particular relates to a truss bracket device for No. 0 block and No. 1 block and a construction method thereof. Background Art

[0002] With the rapid development of domestic infrastructure construction, a large number of high-pier and large-span continuous rigid frame bridge structures have emerged. The construction of Block 0 and Block 1 is the top priority of continuous rigid frame bridge construction. The existing technology mostly selects ground-type brackets or cantilever brackets according to many conditions such as bridge structure form, pier column height, riverbed conditions, etc. The ground-type bracket has the disadvantages of complicated construction procedures, more input materials, low reuse, and long construction period. The cantilever bracket is mainly composed of a bracket bracket, a transverse distribution beam, etc. The bracket bracket cannot be adjusted and cannot effectively adapt to the different heights of the bottom plate of Block 1, and the adaptability range is small.

[0003] Therefore, what is lacking nowadays is a truss bracket device for blocks No. 0 and No. 1 with a simple structure and reasonable design and a construction method thereof, in which multiple truss structures can be easily installed and disassembled as a whole and can be reused, thus reducing manpower and material resources, and the top of the truss structure can adapt to the fine-tuning of the height of the bottom of block No. 1, thereby improving the adaptability range of the truss structure bracket. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a truss bracket device for block No. 0 and block No. 1 in view of the deficiencies in the above-mentioned prior art, which has a reasonable design and is easy to operate. The overall installation and disassembly of multiple truss structures are convenient and can be reused, thereby reducing manpower and material resources, and the top of the truss structure can adapt to the fine-tuning of the height of the bottom of block No. 1, thereby improving the adaptability range of the truss structure bracket.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a truss bracket device for block 0 and block 1, characterized in that it comprises a first group of truss structures and a second group of truss structures arranged on two opposite sides of the top of the pier, and a first group of brackets and a second group of brackets arranged on the other two opposite sides of the top of the pier;

[0006] The first group of truss structures and the second group of truss structures each include a plurality of truss structures, each of the truss structures includes a transverse truss, a vertical truss one end of which is hinged to one end of the transverse truss, and a plurality of lower torsion bars hinged between the transverse trusses and the vertical trusses from the inside to the outside, as well as a plurality of upper torsion bars hinged to the top of the transverse truss and an upper truss hinged to the plurality of upper torsion bars, the lower torsion bars and the upper torsion bars both being retractable, and an inclination sensor being arranged at the bottom of the upper truss.

[0007] The above-mentioned truss bracket device of block No. 0 and block No. 1 is characterized in that: the number of the lower torsion bars is four, and the four lower torsion bars are sequentially recorded as the first lower torsion bar, the second lower torsion bar, the third lower torsion bar and the fourth lower torsion bar from the inside to the outside;

[0008] The number of the upper torsion bars is seven, and the seven upper torsion bars are sequentially recorded as the first upper torsion bar, the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar, the fifth upper torsion bar, the sixth upper torsion bar and the seventh upper torsion bar from the inside to the outside.

[0009] The above-mentioned truss bracket device for block No. 0 and block No. 1 is characterized in that: the lower torsion bar includes a lower sleeve, a first lower adjusting screw passed through one end of the lower sleeve and a second lower adjusting screw passed through the other end of the lower sleeve, and a first rotating handle is provided on the lower sleeve, the end of the first lower adjusting screw away from the lower sleeve is hinged to the transverse truss, and the end of the second lower adjusting screw away from the lower sleeve is hinged to the vertical truss.

[0010] The above-mentioned truss bracket device for block No. 0 and block No. 1 is characterized in that: the upper torsion bar includes an upper sleeve, a first upper adjusting screw passed through one end of the upper sleeve and a second upper adjusting screw passed through the other end of the upper sleeve, a second rotating handle is provided on the upper sleeve, the end of the first upper adjusting screw away from the upper sleeve is hinged to the upper truss, and the end of the second upper adjusting screw away from the upper sleeve is hinged to the transverse truss.

[0011] The above-mentioned truss support device for block No. 0 and block No. 1 is characterized in that: a plurality of I-beams are arranged on the upper truss, and the plurality of I-beams are arranged along the length direction of the upper truss, the length direction of the I-beams is perpendicular to the length direction of the upper truss, and a plurality of upper trusses extend from both ends of the I-beams.

[0012] At the same time, the present invention also discloses a construction method for No. 0 block and No. 1 block, which has simple steps, reasonable design and convenient implementation, and is characterized in that the method comprises the following steps:

[0013] Step 1: Pre-embed the fine-rolled threaded steel bars during the construction of the top of the bridge pier:

[0014] Step 101, tying the steel bars at the top of the pier to form a steel bar section at the top of the pier;

[0015] Step 102: in the process of forming the steel bar section at the top of the bridge pier, pre-embed the first fine-rolled threaded steel bar and the second fine-rolled threaded steel bar according to the designed spacing;

[0016] Step 103: Forming the steel bar segments at the top of the pier, and performing cast-in-place concrete curing until the concrete strength of the pier reaches the designed concrete strength, thereby forming the top of the pier; wherein both ends of each first fine-rolled threaded steel bar extend out of one opposite side of the top of the pier, and both ends of each second fine-rolled threaded steel bar extend out of another opposite side of the top of the pier;

[0017] Step 2: Splicing of truss structure:

[0018] Step 201, hinge one end of the transverse truss and one end of the vertical truss;

[0019] Step 202: sequentially splice a plurality of lower torsion bars between the transverse truss and the vertical truss from inside to outside; wherein the lengths of the plurality of lower torsion bars gradually increase from inside to outside, one end of the lower torsion bar is hinged to the transverse truss, and the other end of the lower torsion bar is hinged to the vertical truss;

[0020] Step 203, sequentially splicing a plurality of upper torsion bars on the top of the transverse truss, and splicing an upper truss on the plurality of upper torsion bars, to complete the splicing of a truss structure; wherein one end of the upper torsion bar is hinged to the transverse truss, and the other end of the upper torsion bar is hinged to the upper truss;

[0021] Step 204, repeating steps 201 to 203 multiple times to obtain multiple truss structures;

[0022] Step 3: Hoisting of truss structure:

[0023] Step 301, the first finish-rolled threaded steel bars extending out of an opposite side of the top of the bridge pier are arranged in sequence along the transverse direction of the bridge: the first first finish-rolled threaded steel bar, ..., the i-th first finish-rolled threaded steel bar, ..., the I-th first finish-rolled threaded steel bar; wherein i and I are both positive integers, and 1≤i≤I;

[0024] Step 302, hoisting the i-th truss structure to one side of the top of the pier; wherein the i-th truss structure and the i-th first fine-rolled threaded steel bar are anchored;

[0025] Step 303, repeating step 302 multiple times to complete the hoisting of the first truss structure on one side of the pier top, and obtaining the first set of truss structures;

[0026] Step 304: According to the method described in steps 301 to 303, the hoisting of the first truss structure to the first truss structure on the other side of the pier top is completed to obtain a second set of truss structures; wherein the first set of truss structures and the second set of truss structures are located on an opposite side of the pier top;

[0027] Step 4: Installation of the first and second brackets:

[0028] Step 401, the second fine-rolled threaded steel bars extending out from the other opposite side of the top of the bridge pier are arranged in order along the longitudinal bridge direction: the first second fine-rolled threaded steel bar, ..., the i′th second fine-rolled threaded steel bar, ..., the I′th second fine-rolled threaded steel bar; wherein i′ and I′ are both positive integers, and 1≤i′≤I′;

[0029] Step 402, hoisting the i'th right-angle bracket to one side of the top of the pier; wherein the i'th right-angle bracket is anchored to the i'th second precision-rolled threaded steel bar;

[0030] Step 403, repeating step 402 multiple times to complete the installation of the I′th right-angle bracket on one side of the top of the pier, and obtaining the first set of brackets;

[0031] Step 404: According to the method described in step 402 to step 403, the hoisting of the first right-angle bracket to the I′th right-angle bracket on the other side of the pier top is completed to obtain a second group of brackets; wherein the first group of brackets and the second group of brackets are located on the other opposite side of the pier top;

[0032] Step 5: Adjustment and anchoring of the first set of truss structures:

[0033] I truss structures in the first group of truss structures are adjusted so that the top heights of the I truss structures all meet the first design elevation. Then the i-th truss structure in the first group of truss structures is adjusted. The specific process is as follows:

[0034] Step 501, adjusting the extension and contraction of multiple lower torsion bars in the i-th truss structure so that the transverse trusses and the vertical trusses are arranged vertically; wherein the pier supports installed on the vertical trusses are in contact with the top surface of the piers, and the vertical trusses are arranged vertically;

[0035] Step 502, adjusting a plurality of upper torsion bars in the i-th truss structure so that the top height of the upper truss meets the first design elevation;

[0036] Step 6: Adjustment and anchoring of the second set of truss structures:

[0037] I truss structures in the second group of truss structures are adjusted so that the top heights of the I truss structures all meet the second design elevation. Then the i-th truss structure in the second group of truss structures is adjusted. The specific process is as follows:

[0038] Step 601, adjusting the extension and contraction of multiple lower torsion bars in the i-th truss structure so that the transverse trusses and the vertical trusses are arranged vertically;

[0039] Step 602: adjust a plurality of upper torsion bars in the i-th truss structure so that the top height of the upper truss meets the second design elevation;

[0040] Step 7: Laying of I-beam distribution beams and installation of bottom formwork:

[0041] Step 701: Arrange a plurality of I-beams on the upper truss of one truss structure in the first truss structure and the second truss structure along the length direction of the upper truss; wherein the length direction of the I-beam is perpendicular to the length direction of the upper truss, and both ends of the I-beam extend out of one upper truss.

[0042] Step 702: Lay a bottom template on a plurality of I-beams;

[0043] Step 703: Install a guardrail protection structure at the upper truss end of one truss structure in the first group of truss structures and the second group of truss structures;

[0044] Step 704: laying bamboo plywood on the top of the first group of brackets and the second group of brackets; wherein guardrail protection structures are installed at the ends of the first group of brackets and the second group of brackets;

[0045] Step 8: Tie up the steel bars of Block 0 and Block 1 and pour concrete:

[0046] The steel bars of block No. 0 and block No. 1 are tied on the first set of truss structures, the second set of truss structures, the first set of brackets and the second set of brackets, and concrete pouring construction is carried out to form block No. 0 and block No. 1.

[0047] The above method is characterized in that: after the reinforcement binding and concrete pouring of block No. 0 and block No. 1 in step eight are completed, the first group of brackets, the second group of brackets, the first group of truss structures, and the second group of truss structures are dismantled, wherein the i-th truss structure in the first group of truss structures and the second group of truss structures is dismantled, and the specific process is as follows:

[0048] Step A, adjusting a plurality of upper torsion bars in the i-th truss structure so that there is a gap between the bottom template at the top of the upper truss and block No. 1; wherein the plurality of upper torsion bars are adjusted to shrink from outside to inside;

[0049] Step B: Remove the bottom formwork and I-beam at the top of the upper truss;

[0050] Step C, dismantling the guardrail protection structure at the end of the upper truss;

[0051] Step D: remove the anchor between the i-th truss structure and the i-th first fine-rolled threaded steel bar, and remove the i-th truss structure.

[0052] The above method is characterized in that: the first group of brackets and the second group of brackets have the same structure, and both the first group of brackets and the second group of brackets include a cross bar, a vertical bar arranged perpendicular to the cross bar, and a diagonal brace connected between the cross bar and the vertical bar. The cross bar is provided with a plurality of distribution beams for laying bamboo plywood, the end of the cross bar is anchored to the second precision-rolled threaded steel bar, the pier support on the vertical bar fits the top surface of the pier, and the vertical bar is arranged vertically.

[0053] The above method is characterized in that: an inclination sensor is arranged at the bottom of the upper truss, and the inclination sensor is a MEMS single-axis inclination sensor. The MEMS single-axis inclination sensor detects the inclination angle of the upper truss so that the top height of the upper truss in the first group of truss structures meets the first design elevation and the top height of the upper truss in the second group of truss structures meets the second design elevation.

[0054] Compared with the prior art, the present invention has the following advantages:

[0055] 1. The present invention has a simple structure, reasonable design, easy installation and layout, low investment cost and high reusability.

[0056] 2. The first and second fine-rolled threaded steel bars are pre-embedded in the top of the bridge pier of the present invention, so that the first and second truss structures are connected to both ends of the first fine-rolled threaded steel bars, and the first and second brackets are connected to the second fine-rolled threaded steel bars, thereby ensuring the installation strength of the first and second truss structures, the first and second brackets, and facilitating disassembly and installation.

[0057] 3. The first group of truss structures and the second group of truss structures of the present invention both include multiple truss structures, each of which includes a transverse truss, a vertical truss, a lower torsion bar, an upper torsion bar and an upper truss. The transverse truss is adjusted to be arranged vertically with the vertical truss by the lower torsion bar so that the vertical truss is arranged vertically along the height direction of the pier; the height of the upper truss is adjusted by the upper torsion bar so that the height of the upper truss adapts to the bottom height of block No. 1, so that the top of the truss structure can adapt to the fine-tuning of the bottom height of block No. 1, thereby improving the adaptability range of the truss structure bracket.

[0058] 4. The construction method of block No. 0 and block No. 1 of the present invention has simple steps, is easy to implement and simple to operate, so that multiple truss structures are hoisted to form a bracket, and the overall installation and disassembly are convenient and can be reused, so that the construction period of block No. 0 and block No. 1 is short and the economic benefit is high.

[0059] 5. The construction method of block No. 0 and block No. 1 of the present invention is easy to operate and has good use effect. First, the fine-rolled threaded steel bars are pre-embedded during the construction of the top of the pier, and then the truss structure is spliced, and then the truss structure is hoisted; then the first group of brackets and the second group of brackets are installed, and the first group of truss structures and the second group of truss structures are adjusted and anchored, and finally the I-beam distribution beam is laid and the bottom formwork is installed, so as to facilitate the subsequent reinforcement binding and concrete pouring construction of block No. 0 and block No. 1, thereby realizing the construction of block No. 0 and block No. 1.

[0060] In summary, the present invention has a reasonable design and is easy to operate. The multiple truss structures are easy to install and disassemble as a whole and can be reused, reducing manpower and material resources. The top of the truss structure can adapt to the fine-tuning of the bottom height of block No. 1, thereby improving the adaptability range of the truss structure bracket.

[0061] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic structural diagram of the truss bracket device of block No. 0 and block No. 1 of the present invention.

[0063] Figure 2 It is a structural schematic diagram of the first group of brackets and the second group of brackets of the truss bracket device of block No. 0 and block No. 1 of the present invention.

[0064] Figure 3 It is a structural schematic diagram of the truss structure of the truss bracket device of block No. 0 and block No. 1 of the present invention.

[0065] Figure 4 It is a flowchart of the construction method of block No. 0 and block No. 1 of the present invention.

[0066] Description of reference numerals:

[0067] 1—Horizontal truss; 2—Vertical truss; 3—Lower torsion bar;

[0068] 3-1—first lower adjusting screw; 3-2—second lower adjusting screw; 3-3—lower sleeve;

[0069] 3-4—first rotating handle; 4—upper torsion bar; 4-1—first upper adjusting screw;

[0070] 4-2—Second upper adjusting screw; 4-3—Upper sleeve; 4-4—Second rotating handle;

[0071] 5—upper truss; 6—pier support; 7—I-beam;

[0072] 8—bottom formwork; 9—guardrail protection structure; 10—first set of truss structure;

[0073] 11—horizontal bar; 12—vertical bar; 13—diagonal brace;

[0074] 14—distribution beam; 15—top of pier; 16—first fine-rolled rebar;

[0075] 17—Second finishing rolled rebar; 18—No. 1 block; 19—No. 0 block;

[0076] 20—the second set of truss structures; 30—the first set of brackets; 40—the second set of brackets. DETAILED DESCRIPTION

[0077] like Figures 1 to 3 A truss bracket device for block 0 and block 1 shown includes a first group of truss structures 10 and a second group of truss structures 20 arranged on two opposite sides of the pier top 15, and a first group of brackets 30 and a second group of brackets 40 arranged on the other two opposite sides of the pier top 15;

[0078] The first group of truss structures 10 and the second group of truss structures 20 each include a plurality of truss structures, each of the truss structures including a transverse truss 1, a vertical truss 2 having one end hinged to one end of the transverse truss 1, and a plurality of lower torsion bars 3 hinged between the transverse truss 1 and the vertical truss 2 from the inside to the outside, as well as a plurality of upper torsion bars 4 hinged to the top of the transverse truss 1 and an upper truss 5 hinged to the plurality of upper torsion bars 4, the lower torsion bars 3 and the upper torsion bars 4 both being retractable, and an inclination sensor being arranged at the bottom of the upper truss 5.

[0079] In this embodiment, the number of the lower torsion bars 3 is four, and the four lower torsion bars 3 are sequentially recorded as the first lower torsion bar, the second lower torsion bar, the third lower torsion bar and the fourth lower torsion bar from the inside to the outside;

[0080] The number of the upper torsion bars 4 is seven, and the seven upper torsion bars 4 are sequentially recorded as the first upper torsion bar, the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar, the fifth upper torsion bar, the sixth upper torsion bar and the seventh upper torsion bar from the inside to the outside.

[0081] In this embodiment, the lower torsion rod 3 includes a lower sleeve 3-3, a first lower adjusting screw 3-1 passed through one end of the lower sleeve 3-3, and a second lower adjusting screw 3-2 passed through the other end of the lower sleeve 3-3. A first rotating handle 3-4 is provided on the lower sleeve 3-3. The end of the first lower adjusting screw 3-1 away from the lower sleeve 3-3 is hinged to the transverse truss 1, and the end of the second lower adjusting screw 3-2 away from the lower sleeve 3-3 is hinged to the vertical truss 2.

[0082] In this embodiment, the upper torsion rod 4 includes an upper sleeve 4-3, a first upper adjusting screw 4-1 passed through one end of the upper sleeve 4-3, and a second upper adjusting screw 4-2 passed through the other end of the upper sleeve 4-3. A second rotating handle 4-4 is provided on the upper sleeve 4-3. The end of the first upper adjusting screw 4-1 away from the upper sleeve 4-3 is hinged to the upper truss 5, and the end of the second upper adjusting screw 4-2 away from the upper sleeve 4-3 is hinged to the transverse truss 1.

[0083] In this embodiment, a plurality of I-beams 7 are provided on the upper truss 5 , and the plurality of I-beams 7 are arranged along the length direction of the upper truss 5 . The length direction of the I-beams 7 is perpendicular to the length direction of the upper truss 5 , and both ends of the I-beams 7 extend out of the plurality of upper trusses 5 .

[0084] In this embodiment, the lengths of the lower sleeves 3-3 in the first lower torsion bar, the second lower torsion bar, the third lower torsion bar to the fourth lower torsion bar increase sequentially; the lengths of the upper sleeves 4-3 in the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar and the fifth upper torsion bar are the same, the lengths of the upper sleeves 4-3 in the first upper torsion bar and the sixth upper torsion bar are the same and are greater than the length of the upper sleeve 4-3 in the fourth upper torsion bar, and the length of the upper sleeve 4-3 in the seventh upper torsion bar is greater than the length of the upper sleeve 4-3 in the sixth upper torsion bar.

[0085] In this embodiment, the lengths of the lower sleeves 3-3 in the first lower torsion bar, the second lower torsion bar, the third lower torsion bar and the fourth lower torsion bar are 0.75m, 1.5m, 2.0m and 2.5m respectively, and the first lower torsion bar, the second lower torsion bar, the third lower torsion bar and the fourth lower torsion bar are arranged at acute angles to the transverse truss 1 and the vertical truss 2.

[0086] In this embodiment, the length of the upper sleeve 4-3 in the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar and the fifth upper torsion bar is 0.75m, the length of the upper sleeve 4-3 in the first upper torsion bar and the sixth upper torsion bar is 1m, the length of the upper sleeve 4-3 in the seventh upper torsion bar is 1.5m, and the seventh upper torsion bar and the transverse truss 1 are arranged at an obtuse angle.

[0087] In this embodiment, the contraction of the first lower torsion bar, the second lower torsion bar, the third lower torsion bar and the fourth lower torsion bar is adjusted by operating the first rotating handle 3-4 to drive the lower sleeve 3-3 to rotate, so as to adjust the length of the first lower adjusting screw 3-1 and the second lower adjusting screw 3-2 extending out of the two ends of the lower sleeve 3-3, thereby adjusting the length of the first lower torsion bar, the second lower torsion bar, the third lower torsion bar and the fourth lower torsion bar;

[0088] To adjust the contraction of the first upper torsion bar, the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar, the fifth upper torsion bar, the sixth upper torsion bar and the seventh upper torsion bar, the second rotating handle 4-4 is operated to drive the upper sleeve 4-3 to rotate, so as to adjust the length of the first upper adjusting screw 4-1 and the second upper adjusting screw 4-2 extending out of the two ends of the upper sleeve 4-3, thereby adjusting the length of the first upper torsion bar, the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar, the fifth upper torsion bar, the sixth upper torsion bar and the seventh upper torsion bar.

[0089] like Figure 4 A construction method of block 0 and block 1 shown includes the following steps:

[0090] Step 1: Pre-embed the fine-rolled threaded steel bars during the construction of the top of the bridge pier:

[0091] Step 101, tying the steel bars at the top of the pier to form a steel bar section at the top of the pier;

[0092] Step 102: in the process of forming the steel bar section at the top of the pier, pre-embed the first fine-rolled threaded steel bar 16 and the second fine-rolled threaded steel bar 17 according to the designed spacing;

[0093] Step 103: Forming the steel bar segments at the top of the pier, and casting concrete for curing until the concrete strength of the pier reaches the designed concrete strength, thereby forming the top of the pier 15; wherein both ends of each first fine-rolled threaded steel bar 16 extend out of one opposite side of the top of the pier, and both ends of each second fine-rolled threaded steel bar 17 extend out of another opposite side of the top of the pier;

[0094] Step 2: Splicing of truss structure:

[0095] Step 201, hinge one end of the transverse truss 1 and one end of the vertical truss 2;

[0096] Step 202: sequentially splice a plurality of lower torsion bars 3 between the transverse truss 1 and the vertical truss 2 from inside to outside; wherein the lengths of the plurality of lower torsion bars 3 gradually increase from inside to outside, one end of the lower torsion bar 3 is hinged to the transverse truss 1, and the other end of the lower torsion bar 3 is hinged to the vertical truss 2;

[0097] Step 203, sequentially splicing a plurality of upper torsion bars 4 on the top of the transverse truss 1, and splicing an upper truss 5 on the plurality of upper torsion bars 4, to complete the splicing of a truss structure; wherein one end of the upper torsion bar 4 is hinged to the transverse truss 1, and the other end of the upper torsion bar 4 is hinged to the upper truss 5;

[0098] Step 204, repeating steps 201 to 203 multiple times to obtain multiple truss structures;

[0099] Step 3: Hoisting of truss structure:

[0100] Step 301, the first finished rolled threaded steel bars 16 extending out of an opposite side of the pier top 15 are arranged in sequence along the transverse direction of the bridge: the first first finished rolled threaded steel bar, ..., the i-th first finished rolled threaded steel bar, ..., the I-th first finished rolled threaded steel bar; wherein i and I are both positive integers, and 1≤i≤I;

[0101] Step 302, hoisting the i-th truss structure to one side of the pier top 15; wherein the i-th truss structure and the i-th first fine-rolled threaded steel bar are anchored;

[0102] Step 303, repeating step 302 multiple times to complete the hoisting of the first truss structure on one side of the pier top 15, and obtaining the first group of truss structures 10;

[0103] Step 304: According to the method described in steps 301 to 303, the hoisting of the first truss structure to the first truss structure on the other side of the pier top 15 is completed to obtain a second group of truss structures 20; wherein the first group of truss structures 10 and the second group of truss structures 20 are located on an opposite side of the pier top 15;

[0104] Step 4: Installation of the first and second brackets:

[0105] Step 401, the second fine-rolled threaded steel bars 17 extending out from the other opposite side of the pier top 15 are arranged in order along the longitudinal bridge direction: the first second fine-rolled threaded steel bar, ..., the i′th second fine-rolled threaded steel bar, ..., the I′th second fine-rolled threaded steel bar; wherein i′ and I′ are both positive integers, and 1≤i′≤I′;

[0106] Step 402, hoisting the i'th right-angle bracket to one side of the pier top 15; wherein the i'th right-angle bracket is anchored to the i'th second precision-rolled threaded steel bar;

[0107] Step 403, repeating step 402 multiple times, completing the installation of the I′th right-angle bracket on one side of the pier top 15, and obtaining the first set of brackets 30;

[0108] Step 404: According to the method described in step 402 to step 403, the hoisting of the first right-angle bracket to the I′th right-angle bracket on the other side of the pier top 15 is completed to obtain a second group of brackets 40; wherein the first group of brackets 30 and the second group of brackets 40 are located on the other opposite side of the pier top 15;

[0109] Step 5: Adjustment and anchoring of the first set of truss structures:

[0110] I truss structures in the first group of truss structures 10 are adjusted so that the top heights of the I truss structures all meet the first design elevation, and the i-th truss structure in the first group of truss structures 10 is adjusted. The specific process is as follows:

[0111] Step 501, adjusting the extension and contraction of the multiple lower torsion bars 3 in the i-th truss structure so that the transverse truss 1 and the vertical truss 2 are arranged vertically; wherein the pier support 6 installed on the vertical truss 2 fits the surface of the pier top 15, and the vertical truss 2 is arranged vertically;

[0112] Step 502, adjusting the plurality of upper torsion bars 4 in the i-th truss structure so that the top height of the upper truss 5 meets the first design elevation;

[0113] Step 6: Adjustment and anchoring of the second set of truss structures:

[0114] I truss structures in the second group of truss structures 20 are adjusted so that the top heights of the I truss structures all meet the second design elevation, and the i-th truss structure in the second group of truss structures 20 is adjusted. The specific process is as follows:

[0115] Step 601, adjusting the extension and contraction of multiple lower torsion bars 3 in the i-th truss structure so that the transverse truss 1 and the vertical truss 2 are arranged vertically;

[0116] Step 602, adjusting the plurality of upper torsion bars 4 in the i-th truss structure so that the top height of the upper truss 5 meets the second design elevation;

[0117] Step 7: Laying of I-beam distribution beams and installation of bottom formwork:

[0118] Step 701: Arrange a plurality of I-beams 7 on the upper truss 5 of one truss structure in the first group of truss structures 10 and the second group of truss structures 20 along the length direction of the upper truss 5; wherein the length direction of the I-beams 7 is perpendicular to the length direction of the upper truss 5, and both ends of the I-beams 7 extend out of one upper truss 5.

[0119] Step 702, laying a bottom template 8 on a plurality of I-beams 7;

[0120] Step 703: Install a guardrail protection structure 9 at the end of the upper truss 5 of one truss structure in the first group of truss structures 10 and the second group of truss structures 20;

[0121] Step 704: laying bamboo plywood on the top of the first group of brackets 30 and the second group of brackets 40; wherein, guardrail protection structures 9 are installed at the ends of the first group of brackets 30 and the second group of brackets 40;

[0122] Step 8: Tie up the steel bars of Block 0 and Block 1 and pour concrete:

[0123] The steel bars of block No. 0 and block No. 1 are tied on the first group of truss structures 10 , the second group of truss structures 20 , the first group of brackets 30 and the second group of brackets 40 , and concrete pouring construction is performed to form block No. 0 19 and block No. 1 18 .

[0124] In this embodiment, after the reinforcement binding and concrete pouring of block No. 0 and block No. 1 in step eight are completed, the first group of brackets 30, the second group of brackets 40, the first group of truss structures 10, and the second group of truss structures 20 are dismantled, wherein the i-th truss structure in the first group of truss structures 10 and the second group of truss structures 20 is dismantled, and the specific process is as follows:

[0125] Step A, adjusting the plurality of upper torsion bars 4 in the i-th truss structure so that there is a gap between the bottom template 8 at the top of the upper truss 5 and the No. 1 block 18; wherein the plurality of upper torsion bars 4 are adjusted to shrink from the outside to the inside;

[0126] Step B, removing the bottom template 8 and the I-beam 7 on the top of the upper truss 5;

[0127] Step C, removing the guardrail protection structure 9 at the end of the upper truss 5;

[0128] Step D: remove the anchor between the i-th truss structure and the i-th first fine-rolled threaded steel bar, and remove the i-th truss structure.

[0129] In this embodiment, the first group of brackets 30 and the second group of brackets 40 have the same structure. The first group of brackets 30 and the second group of brackets 40 both include a cross bar 11, a vertical bar 12 arranged perpendicular to the cross bar 11, and a diagonal brace 13 connected between the cross bar 11 and the vertical bar 12. The cross bar 11 is provided with a plurality of distribution beams 14 for laying bamboo plywood. The end of the cross bar 11 is anchored to a second precision-rolled threaded steel bar. The pier support on the vertical bar 12 fits the surface of the pier top 15, and the vertical bar 12 is arranged vertically.

[0130] In this embodiment, an inclination sensor is arranged at the bottom of the upper truss 5, and the inclination sensor is a MEMS single-axis inclination sensor. The MEMS single-axis inclination sensor detects the inclination angle of the upper truss 5 so that the top height of the upper truss 5 in the first group of truss structures 10 meets the first design elevation and the top height of the upper truss 5 in the second group of truss structures 20 meets the second design elevation.

[0131] In this embodiment, the distance between two adjacent I-beams 7 is 0.25m.

[0132] In summary, the present invention has a reasonable design and is easy to operate. The multiple truss structures are easy to install and disassemble as a whole and can be reused, reducing manpower and material resources. The top of the truss structure can adapt to the fine-tuning of the bottom height of block No. 1, thereby improving the adaptability range of the truss structure bracket.

[0133] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for constructing a No. 0 block and a No. 1 block using a truss bracket device for a No. 0 block and a No. 1 block, the device comprising a first group of truss structures (10) and a second group of truss structures (20) arranged on two opposite sides of a pier top (15), and a first group of brackets (30) and a second group of brackets (40) arranged on the other two opposite sides of the pier top (15); The first group of truss structures (10) and the second group of truss structures (20) both include a plurality of truss structures, each of the truss structures including a transverse truss (1), a vertical truss (2) one end of which is hinged to one end of the transverse truss (1), and a plurality of lower torsion bars (3) hinged between the transverse truss (1) and the vertical truss (2) from the inside to the outside, as well as a plurality of upper torsion bars (4) hinged to the top of the transverse truss (1) and an upper truss (5) hinged to the plurality of upper torsion bars (4), the lower torsion bars (3) and the upper torsion bars (4) both being retractable, and an inclination sensor being arranged at the bottom of the upper truss (5); characterized in that: The method comprises the following steps: Step 1: Pre-embed the fine-rolled threaded steel bars during the construction of the top of the bridge pier: Step 101, tying the steel bars at the top of the pier to form a steel bar section at the top of the pier; Step 102: in the process of forming the steel bar section at the top of the bridge pier, pre-embed the first fine-rolled threaded steel bar (16) and the second fine-rolled threaded steel bar (17) according to the designed spacing; Step 103, supporting the side formwork of the steel bar segment at the top of the pier, and curing the cast-in-place concrete until the concrete strength of the pier reaches the designed concrete strength, thereby forming the top of the pier (15); wherein both ends of each first fine-rolled threaded steel bar (16) extend out of one relative side of the top of the pier, and both ends of each second fine-rolled threaded steel bar (17) extend out of another relative side of the top of the pier; Step 2: Splicing of truss structure: Step 201, hinge one end of the transverse truss (1) and one end of the vertical truss (2); Step 202: splice a plurality of lower torsion bars (3) in sequence from the inside to the outside between the transverse truss (1) and the vertical truss (2); wherein the lengths of the plurality of lower torsion bars (3) gradually increase from the inside to the outside, one end of the lower torsion bar (3) is hinged to the transverse truss (1), and the other end of the lower torsion bar (3) is hinged to the vertical truss (2); Step 203, sequentially splicing a plurality of upper torsion bars (4) on the top of the transverse truss (1), and splicing an upper truss (5) on the plurality of upper torsion bars (4), to complete the splicing of a truss structure; wherein one end of the upper torsion bar (4) is hinged to the transverse truss (1), and the other end of the upper torsion bar (4) is hinged to the upper truss (5); Step 204, repeating steps 201 to 203 multiple times to obtain multiple truss structures; Step 3: Hoisting of truss structure: Step 301, the first fine-rolled threaded steel bars (16) extending out of an opposite side of the top of the pier (15) are arranged in order along the transverse direction of the bridge: the first first fine-rolled threaded steel bar, ..., the i-th first fine-rolled threaded steel bar, ..., the I-th first fine-rolled threaded steel bar; wherein i and I are both positive integers, and 1≤i≤I; Step 302, hoisting the i-th truss structure to one side of the top of the pier (15); wherein the i-th truss structure is anchored to the i-th first fine-rolled threaded steel bar; Step 303, repeating step 302 multiple times to complete the hoisting of the first truss structure on one side of the pier top (15), and obtaining the first set of truss structures (10); Step 304: According to the method described in steps 301 to 303, the hoisting of the first truss structure to the first truss structure on the other side of the pier top (15) is completed to obtain a second group of truss structures (20); wherein the first group of truss structures (10) and the second group of truss structures (20) are located on an opposite side of the pier top (15); Step 4: Installation of the first and second brackets: Step 401, the second fine-rolled threaded steel bars (17) extending out of the other opposite side of the pier top (15) are arranged in order along the longitudinal bridge direction: the first second fine-rolled threaded steel bar, ..., the i′th second fine-rolled threaded steel bar, ..., the I′th second fine-rolled threaded steel bar; wherein i′ and I′ are both positive integers, and 1≤i′≤I′; Step 402, hoisting the i'th right-angle bracket to one side of the top of the pier (15); wherein the i'th right-angle bracket is anchored to the i'th second precision-rolled threaded steel bar; Step 403, repeating step 402 multiple times to complete the installation of the I′th right-angle bracket on one side of the pier top (15), and obtaining the first set of brackets (30); Step 404: According to the method described in steps 402 to 403, the hoisting of the first right-angle bracket to the I′th right-angle bracket on the other side of the pier top (15) is completed to obtain a second group of brackets (40); wherein the first group of brackets (30) and the second group of brackets (40) are located on the other opposite side of the pier top (15); Step 5: Adjustment and anchoring of the first set of truss structures: I truss structures in the first group of truss structures (10) are adjusted so that the top heights of the I truss structures all meet the first design elevation. The i-th truss structure in the first group of truss structures (10) is adjusted. The specific process is as follows: Step 501, adjusting the extension and contraction of the plurality of lower torsion bars (3) in the i-th truss structure so that the transverse truss (1) and the vertical truss (2) are arranged vertically; wherein the pier support (6) installed on the vertical truss (2) is in contact with the surface of the pier top (15), and the vertical truss (2) is arranged vertically; Step 502, adjusting a plurality of upper torsion bars (4) in the i-th truss structure so that the top height of the upper truss (5) meets the first design elevation; Step 6: Adjustment and anchoring of the second set of truss structures: I truss structures in the second group of truss structures (20) are adjusted so that the top heights of the I truss structures all meet the second design elevation. The i-th truss structure in the second group of truss structures (20) is adjusted. The specific process is as follows: Step 601, adjusting the extension and contraction of a plurality of lower torsion bars (3) in the i-th truss structure so that the transverse truss (1) and the vertical truss (2) are arranged vertically; Step 602, adjusting the plurality of upper torsion bars (4) in the i-th truss structure so that the top height of the upper truss (5) meets the second design elevation; Step 7: Laying of I-beam distribution beams and installation of bottom formwork: Step 701: Arrange a plurality of I-beams (7) on the upper truss (5) of one truss structure in the first group of truss structures (10) and the second group of truss structures (20) along the length direction of the upper truss (5); wherein the length direction of the I-beams (7) is perpendicular to the length direction of the upper truss (5), and both ends of the I-beams (7) extend out of one upper truss (5). Step 702: Lay a bottom template (8) on a plurality of I-beams (7); Step 703: installing a guardrail protection structure (9) at the end of the upper truss (5) of one truss structure in the first group of truss structures (10) and the second group of truss structures (20); Step 704: laying bamboo plywood on the top of the first group of brackets (30) and the second group of brackets (40); wherein guardrail protection structures (9) are installed at the ends of the first group of brackets (30) and the second group of brackets (40); Step 8: Tie up the steel bars of Block 0 and Block 1 and pour concrete: The steel bars of block No. 0 and block No. 1 are tied on the first set of truss structures (10), the second set of truss structures (20), the first set of brackets (30) and the second set of brackets (40), and concrete pouring is performed to form block No. 0 (19) and block No. 1 (18); An inclination sensor is arranged at the bottom of the upper truss (5), and the inclination sensor is a MEMS single-axis inclination sensor. The MEMS single-axis inclination sensor detects the inclination angle of the upper truss (5), so that the top height of the upper truss (5) in the first group of truss structures (10) meets the first design elevation and the top height of the upper truss (5) in the second group of truss structures (20) meets the second design elevation.

2. The method according to claim 1, characterized in that: The number of the lower torsion bars (3) is four, and the four lower torsion bars (3) are sequentially recorded as a first lower torsion bar, a second lower torsion bar, a third lower torsion bar and a fourth lower torsion bar from the inside to the outside; The number of the upper torsion bars (4) is seven, and the seven upper torsion bars (4) are sequentially recorded from the inside to the outside as the first upper torsion bar, the second upper torsion bar, the third upper torsion bar, the fourth upper torsion bar, the fifth upper torsion bar, the sixth upper torsion bar and the seventh upper torsion bar.

3. The method according to claim 1, characterized in that: The lower torsion rod (3) comprises a lower sleeve (3-3), a first lower adjusting screw (3-1) inserted through one end of the lower sleeve (3-3), and a second lower adjusting screw (3-2) inserted through the other end of the lower sleeve (3-3); a first rotating handle (3-4) is provided on the lower sleeve (3-3); an end of the first lower adjusting screw (3-1) away from the lower sleeve (3-3) is hinged to the transverse truss (1); and an end of the second lower adjusting screw (3-2) away from the lower sleeve (3-3) is hinged to the vertical truss (2).

4. The method according to claim 1, characterized in that: The upper torsion rod (4) comprises an upper sleeve (4-3), a first upper adjusting screw (4-1) passing through one end of the upper sleeve (4-3), and a second upper adjusting screw (4-2) passing through the other end of the upper sleeve (4-3); a second rotating handle (4-4) is provided on the upper sleeve (4-3); an end of the first upper adjusting screw (4-1) away from the upper sleeve (4-3) is hinged to an upper truss (5); and an end of the second upper adjusting screw (4-2) away from the upper sleeve (4-3) is hinged to a transverse truss (1).

5. The method according to claim 1, characterized in that: A plurality of I-beams (7) are arranged on the upper truss (5). The plurality of I-beams (7) are arranged along the length direction of the upper truss (5). The length direction of the I-beams (7) is perpendicular to the length direction of the upper truss (5). Both ends of the I-beams (7) extend out of the plurality of upper trusses (5).

6. The method according to claim 1, characterized in that: After the reinforcement binding and concrete pouring of block No. 0 and block No. 1 in step eight are completed, the first group of brackets (30), the second group of brackets (40), the first group of truss structures (10), and the second group of truss structures (20) are dismantled, wherein the i-th truss structure in the first group of truss structures (10) and the second group of truss structures (20) is dismantled, and the specific process is as follows: Step A, adjusting the plurality of upper torsion bars (4) in the i-th truss structure so that there is a gap between the bottom template (8) at the top of the upper truss (5) and the No. 1 block (18); wherein the plurality of upper torsion bars (4) are adjusted to shrink from the outside to the inside; Step B, removing the bottom template (8) and the I-beam (7) on the top of the upper truss (5); Step C, removing the guardrail protection structure (9) at the end of the upper truss (5); Step D: remove the anchor between the i-th truss structure and the i-th first fine-rolled threaded steel bar, and remove the i-th truss structure.

7. The method according to claim 1, characterized in that: The first group of brackets (30) and the second group of brackets (40) have the same structure. The first group of brackets (30) and the second group of brackets (40) both comprise a crossbar (11), a vertical bar (12) arranged perpendicular to the crossbar (11), and a diagonal brace (13) connected between the crossbar (11) and the vertical bar (12). The crossbar (11) is provided with a plurality of distribution beams (14) for laying bamboo plywood. The end of the crossbar (11) is anchored to the second precision-rolled threaded steel bar. The pier support on the vertical bar (12) fits the surface of the pier top (15), and the vertical bar (12) is arranged vertically.

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