CN107604805B - Beret truss section - Google Patents
Beret truss section Download PDFInfo
- Publication number
- CN107604805B CN107604805B CN201711049604.5A CN201711049604A CN107604805B CN 107604805 B CN107604805 B CN 107604805B CN 201711049604 A CN201711049604 A CN 201711049604A CN 107604805 B CN107604805 B CN 107604805B
- Authority
- CN
- China
- Prior art keywords
- chord
- lower chord
- upper chord
- web member
- frame body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A bailey truss section relates to the technical field of bridge construction and comprises an upper chord, a lower chord, a vertical rod, a middle cross rod and a diagonal web member, wherein the middle cross rod divides bailey pieces formed by the upper chord, the lower chord and the vertical rod into an upper frame and a lower frame for respectively accommodating the diagonal web member; the length of the upper chord and the lower chord can be adjusted between 50cm and 75 cm; the same angle alpha is formed between the inclined web member and the upper chord or between the inclined web member and the lower chord, and the angle alpha is 30 degrees less than alpha less than 60 degrees. The invention aims to solve the problem of the allowance of 50cm in length, and the allowance below 25cm can be adjusted by cutting two ends of the bailey segment on site.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bailey truss section.
Background
The prior art bailey beam is used as a temporary assembled bridge structural member or a building construction support assembled member, is gradually widely applied in the field of engineering construction, has the characteristics of high strength, rapid construction, wide application range and the like, and is characterized in that the 321' Bei Leibiao standard section is 3m long, and 1.0m, 1.5m and 2.0m nonstandard sections are also appeared in the market in recent years, but when the assembly structure length allowance is within the range of 50cm in practical application, the condition that the existing truss section cannot be satisfied is only utilized.
The prior publication No. CN201077956 discloses a female and male Bailey steel frame for building an arch, and relates to a steel frame for bridge construction.
But still not quickly adjustable, and cannot be adapted to special situations, such as when it is desired to have a length margin of the assembled structure in the range of 50cm, which cannot be met by the prior art truss alone.
Disclosure of Invention
The object of the present invention is to produce a bailey frame which is distinguished from the prior art in order to solve the above-mentioned problems.
The technical aim of the invention is realized by the following technical scheme: the bailey truss section comprises an upper chord, a lower chord, a vertical rod, a middle cross rod and a diagonal web member, and is characterized in that the middle cross rod divides a bailey piece formed by the upper chord, the lower chord and the vertical rod into an upper frame body and a lower frame body which respectively accommodate the diagonal web member; the length of the upper chord and the lower chord can be adjusted between 50cm and 75 cm; the same angle alpha is formed between the inclined web member and the upper chord or between the inclined web member and the lower chord, and the angle alpha is 30 degrees less than alpha less than 60 degrees.
Preferably, the length of the upper chord and the lower chord is adjusted by cutting the two ends of the upper chord and the lower chord on site.
Preferably, the four diagonal web members are connected in the frame body in a diamond shape, and a distance of 35-50cm is reserved between the diagonal web members which are oppositely arranged.
Preferably, two ends of the upper chord and the lower chord are respectively provided with a joint, and the joints are movably connected or fixedly connected with the upper chord and the lower chord.
Preferably, when the upper chord and the lower chord are not cut, the joint is movably connected with the upper chord and the lower chord; after the upper chord and the lower chord are cut, the connector is fixedly connected with the upper chord and the lower chord.
Preferably, the upper chord, the lower chord, the vertical bar, the middle cross bar, the diagonal web member and the like are called as bars, and the ends of the bars are provided with pre-calibration pieces; the pre-calibration element comprises a male part arranged on one of the bars and a female part arranged on the bar corresponding to the bar containing the male part.
Preferably, the pre-calibration element comprises a frame welded to the rod and magnetic blocks embedded in the frame, the magnetic blocks of the male part are south poles, and the magnetic blocks of the cathode are north poles.
Preferably, the lever comprises a contact surface and an outer surface, the pre-calibration being provided on the outer surface.
Preferably, the pre-calibration piece is detached after the rods are fixedly connected, and the magnetic block is detached after the pre-calibration piece is detached.
Preferably, a thermal expansion member is filled between the frame and the magnetic blocks, and when the rods are welded, the thermal expansion member is operated by heat to move the magnetic blocks out of the frame.
The beneficial technical effects of the invention are as follows:
1. the bailey frame solves the problem of the allowance of 50cm in length, and the adjustment of the allowance below 25cm can be realized by cutting two ends of the bailey segment on site.
2. The bending resistance and the shearing resistance of the invention are far greater than the strength of the standard joint, so that the invention is safe and reliable when being matched with the standard joint; the present invention Xu Wanju is 788.2kn.m. Xu Wanju which is greater than standard Bei Leijie. The allowable shear force of the invention is greater than the allowable shear force 245.2KN of standard Bei Leijie.
3. The setting of pre-calibration piece can make the perfect cooperation that reduces repeated dismouting and realize whole structure, adjusts through once only arranging whole line frame structure, then carries out the pre-fixation, carries out comprehensive fixation again, has omitted the step of repeated dismouting, has reduced workman's intensity of labour.
4. The arrangement of the magnetic blocks can enable workers to freely allocate in the assembly process, and the assembly of the magnetic blocks into a row frame with compact structure and attractive appearance is facilitated.
5. The pre-calibration piece is removed after the installation of the Bailey truss section is completed, so that the structural strength of the later-stage traveling frame can be ensured, and the whole traveling frame can be conveniently matched with other traveling frames. If the bars of the beret truss sections are connected through bolts, the magnetic blocks are removed through a tool after the bolts are fixed; if the bars of the beret truss section are connected by welding, the thermal expansion member provided to the frame body when the bolts are fixed automatically removes the magnetic blocks.
Drawings
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a schematic illustration of a pre-calibration of the present invention;
in fig. 1 and 2, 1-upper chord, 2-lower chord, 3-vertical bar, 4-middle cross bar, 5-diagonal web member, 6-joint, 7-pre-calibration, 71-male portion, 72-female portion.
Detailed Description
In the first embodiment, as shown in fig. 1, the bailey truss section comprises upper and lower strings 1,2, a vertical rod 3, a middle cross rod 4 and a diagonal web member 5, wherein the upper and lower strings 1,2 are 75cm long, double-spliced channel steel is adopted, the vertical rod 3 is 140cm long, the middle cross rod 4 is 75cm long, the middle cross rod 4 uniformly divides the vertical rod 3 into two ends, the upper and lower vertical rods 3 are 70cm respectively, and the vertical rod 3, the middle cross rod 4 and the diagonal web member 5 are all 8-number i-steel. The lengths of the upper and lower chords 1 and 2 are 75cm, so that the problem of the allowance of 50cm is solved, and the upper and lower chords 1 and 2 and the upper and lower vertical rods 3 can be equal to each other by cutting the bailey segments on site for the allowance of less than 25 cm.
The two ends of the upper chord 1 and the lower chord 2 are respectively provided with a joint 6, the joints 6 are perpendicular to the vertical rods 3, the joints 6 are movably connected or fixedly connected with the upper chord 1 and the lower chord 2, and the joints 6 are male heads or female heads. When the upper and lower strings 1,2 are not cut, the joint 6 is movably connected with the upper and lower strings 1, 2; after the upper and lower strings 1,2 are cut, the joint 6 is fixedly connected with the upper and lower strings 1, 2. The lengths of the upper chord and the lower chord 1,2 after cutting are 70cm, and the length of the middle cross bar is 70cm, so that the same angle alpha is formed between the inclined web member 5 and the upper chord 1 or between the inclined web member 5 and the lower chord 2, and alpha=45 degrees.
The middle cross rod 4 divides the bailey piece formed by the upper chord 1, the lower chord 2 and the vertical rod 3 into an upper frame body and a lower frame body which respectively contain the inclined web members 5, the inclined web members 5 are four and are connected in the frame body to form a diamond shape, and a distance of 49.5cm is reserved between the inclined web members 5 which are oppositely arranged.
The movable connection is that a plurality of pinholes are arranged on the double-spliced channel steel, a joint pin hole matched with the pin hole is arranged on the joint 6, the pin hole is fixed with the joint pin hole through a pin bolt, and if the upper chord 1 and the lower chord 2 are not cut or are cut, the pin bolt is melted to enable the joint 6 to form a whole with the upper chord 1 and the lower chord 2.
How to cut quickly on site and to re-fix the joint 6 is a major challenge in the solution, which is achieved by the following steps,
(1) The Bailey sheet is supported to be horizontally placed, two parallel lines are drawn on the upper chord 1 and the lower chord 2, and the distance between the two adjacent parallel lines is the width required to be cut;
(2) The two parallel lines are clamped by fixing mechanisms, and the two parallel lines are spliced in two, so that the two parallel lines are vertically arranged, the fixing mechanisms for clamping the free ends of the upper strings 1 and the lower strings 2 of the upper block are bent upwards by an angle of 30 degrees to 45 degrees, and the fixing mechanisms for clamping the free ends of the upper strings 1 and the lower strings 2 of the lower block are bent downwards by an angle of 30 degrees to 45 degrees. The internal mechanism of the bent side is weakened by the tensile structure strength after bending, and the cutting is easy;
(3) Placing an oxygen acetylene cutting machine at the bending position and moving in two parallel lines; softening the bending part, realizing the relaxation of the bending part by repeatedly turning up and down the fixing mechanism at the free ends of the upper and lower strings 1,2 for 4-5, and realizing the instantaneous fracture of the cutting part in the horizontal plane by pulling the fixing mechanism at the free ends of the upper and lower strings 1, 2.
(4) And leveling the marked line segment and shaping the pin hole in the period of cooling the bailey piece to normal temperature. Therefore, the required bailey pieces are directly cut on site, and the structural strength of the whole bailey piece is higher than that of a standard bailey piece.
The second embodiment is a bailey truss section, which comprises upper and lower strings 1,2, a vertical rod 3, a middle cross rod 4 and a diagonal web member 5, wherein the non-standard part of the bailey is used as a matching standard part '321', the most preferable specification is that the upper and lower strings 1,2 are 75cm long, double-spliced channel steel is adopted, the vertical rod 3 is 140cm long, the middle cross rod 4 is 75cm long, the middle cross rod 4 uniformly divides the vertical rod 3 into two ends, the upper and lower vertical rods 3 are 70cm respectively, and the vertical rod 3, the middle cross rod 4 and the diagonal web member 5 are all 8-shaped I-steel. The lengths of the upper and lower chords 1 and 2 are 75cm, so that the problem of the allowance of 50cm is solved, and the upper and lower chords 1 and 2 and the upper and lower vertical rods 3 can be equal to each other by cutting the bailey segments on site for the allowance of less than 25 cm.
The two ends of the upper chord 1 and the lower chord 2 are respectively provided with a joint 6, the joints 6 are perpendicular to the vertical rods 3, the joints 6 are movably connected or fixedly connected with the upper chord 1 and the lower chord 2, and the joints 6 are male heads or female heads. When the upper and lower strings 1,2 are not cut, the joint 6 is movably connected with the upper and lower strings 1, 2; after the upper and lower strings 1,2 are cut, the joint 6 is fixedly connected with the upper and lower strings 1, 2. The lengths of the upper chord and the lower chord after cutting are 50cm, and the length of the middle cross bar is 50cm. The others are the same as the examples.
In the above embodiment, the upper and lower chords 1,2, the vertical rod 3, the middle cross rod 4, the diagonal web member 5 and the like are called as rods, and on the basis of the above embodiment, the end parts of the rods are provided with pre-calibration pieces 7; the pre-calibration member 7 comprises a male part 71 and a female part 72, the male part 71 being arranged on one of the bars and the female part 72 being arranged on the bar corresponding to the bar comprising the male part 71. For example, a male part 71 is provided on the diagonal web member 5, and a female part 72 is provided on the middle cross bar 4 or the upper and lower chords 1,2 or the vertical bar 3 to which the diagonal web member 5 is to be connected.
The pre-calibration member 7 has a specific structure that the pre-calibration member 7 comprises a frame welded on a rod and a magnetic block embedded in the frame, the magnetic block of the male part 71 is a south pole, and the magnetic block of the cathode 72 is a north pole. The pre-fixing between the rods is realized through the mutual attraction between the magnetic blocks, and the pre-fixing is free movable detachable fixed connection.
The pre-calibration piece 7 is set in the following positions: the lever comprises a contact surface and an outer surface on which the pre-calibration piece 6 is arranged. Because the arrangement on the outer surface facilitates the removal of the magnetic blocks in the next step.
The pre-alignment member 7 is removed by removing the magnetic blocks by means of tools, such as pliers, etc., which are fixedly connected by bolts when the bars are connected.
When the rods are fixedly connected through welding, the thermal expansion piece is pre-buried between the frame body and the magnetic blocks in advance, and when the rods are welded, the thermal expansion piece works to move the magnetic blocks out of the frame body.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. The bailey truss section comprises an upper chord (1), a lower chord (2), a vertical rod (3), a middle cross rod (4) and a diagonal web member (5), and is characterized in that the middle cross rod (4) divides a bailey piece formed by the upper chord (1), the lower chord (2) and the vertical rod (3) into an upper frame body and a lower frame body which respectively contain the diagonal web member (5); the lengths of the upper chord (1) and the lower chord (2) are adjusted between 50cm and 75 cm; the same angle alpha is formed between the inclined web member (5) and the upper chord (1) or between the inclined web member (5) and the lower chord (2), and the angle alpha is smaller than 30 degrees and smaller than 60 degrees;
the lengths of the upper chord (1) and the lower chord (2) are adjusted by cutting the two ends of the upper chord (1) and the lower chord (2) on site;
two ends of the upper chord (1) and the lower chord (2) are respectively provided with a joint (6), and the joints (6) are movably connected or fixedly connected with the upper chord (1) and the lower chord (2);
when the upper chord (1) and the lower chord (2) are not cut, the joint (6) is movably connected with the upper chord (1) and the lower chord (2); after the upper chord (1) and the lower chord (2) are cut, the joint (6) is fixedly connected with the upper chord (1) and the lower chord (2);
the inclined web members (5) are four and are connected in the frame body in a diamond shape, and a distance of 35-50cm is reserved between the oppositely arranged inclined web members (5);
the upper chord (1), the lower chord (2), the vertical rod (3), the middle cross rod (4) and the inclined web member (5) are called rods, and pre-calibration pieces (7) are arranged at the ends of the rods; the pre-calibration element (7) comprises a male part (71) and a female part (72), the male part (71) being arranged on one of the bars, the female part (72) being arranged on the bar corresponding to the bar containing the male part (71);
the pre-calibration piece (7) comprises a frame body welded on the rod and a magnetic block embedded in the frame body, wherein the magnetic block of the male part (71) is a south pole, and the magnetic block of the female part (72) is a north pole;
and a thermal expansion piece is filled between the frame body and the magnetic blocks, and when the rods are welded, the thermal expansion piece works to move the magnetic blocks out of the frame body by heat.
2. A beret truss section according to claim 1, wherein the bars comprise contact surfaces and outer surfaces, the pre-calibration member (7) being provided on the outer surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049604.5A CN107604805B (en) | 2017-10-31 | 2017-10-31 | Beret truss section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049604.5A CN107604805B (en) | 2017-10-31 | 2017-10-31 | Beret truss section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107604805A CN107604805A (en) | 2018-01-19 |
| CN107604805B true CN107604805B (en) | 2024-02-13 |
Family
ID=61083832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711049604.5A Active CN107604805B (en) | 2017-10-31 | 2017-10-31 | Beret truss section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107604805B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020280A (en) * | 2006-11-22 | 2007-08-22 | 沪东中华造船(集团)有限公司 | Locating unit of connecting pedestal |
| CN203007814U (en) * | 2012-12-19 | 2013-06-19 | 中铁十局集团第三建设有限公司 | Connection piece used for building bailey beam truss |
| CN203644319U (en) * | 2013-10-21 | 2014-06-11 | 惠州市德赛智能科技有限公司 | Easily assembled LED display box body |
| CN205295918U (en) * | 2015-12-29 | 2016-06-08 | 中冶建筑研究总院有限公司 | Purlin piece is assembled to multipurpose standard |
| TWM529111U (en) * | 2016-05-06 | 2016-09-21 | Raider Electric Corp | Ceiling light fixing structure |
| CN106734952A (en) * | 2016-12-04 | 2017-05-31 | 重庆市环岛机械制造有限公司 | The casting mould of motor housing |
| CN207405467U (en) * | 2017-10-31 | 2018-05-25 | 中铁十六局集团第三工程有限公司 | A kind of Bailey truss section |
-
2017
- 2017-10-31 CN CN201711049604.5A patent/CN107604805B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020280A (en) * | 2006-11-22 | 2007-08-22 | 沪东中华造船(集团)有限公司 | Locating unit of connecting pedestal |
| CN203007814U (en) * | 2012-12-19 | 2013-06-19 | 中铁十局集团第三建设有限公司 | Connection piece used for building bailey beam truss |
| CN203644319U (en) * | 2013-10-21 | 2014-06-11 | 惠州市德赛智能科技有限公司 | Easily assembled LED display box body |
| CN205295918U (en) * | 2015-12-29 | 2016-06-08 | 中冶建筑研究总院有限公司 | Purlin piece is assembled to multipurpose standard |
| TWM529111U (en) * | 2016-05-06 | 2016-09-21 | Raider Electric Corp | Ceiling light fixing structure |
| CN106734952A (en) * | 2016-12-04 | 2017-05-31 | 重庆市环岛机械制造有限公司 | The casting mould of motor housing |
| CN207405467U (en) * | 2017-10-31 | 2018-05-25 | 中铁十六局集团第三工程有限公司 | A kind of Bailey truss section |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107604805A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204298720U (en) | A kind of concrete box girder being provided with cable guide pipe positioner | |
| CN211114827U (en) | Building templates link that civil engineering used | |
| CN210948747U (en) | Fully-mechanized mining working face two-lane circulating movable type advanced support hydraulic support | |
| CN107604805B (en) | Beret truss section | |
| CN104878695A (en) | Viaduct cover beam shaping bottom die support and application method thereof | |
| CN204919902U (en) | Fashioned curved surface curtain system of broken line unit | |
| CN110700490B (en) | Transfer floor large-span steel reinforced concrete beam and construction method | |
| CN202192391U (en) | Gantry type hanger frame applicable to mounting cross steel columns | |
| CN107653785B (en) | High structural strength bailey truss section | |
| CN105625717A (en) | Shear wall waist beam concrete casting formwork plug tool and plugging method thereof | |
| CN216157680U (en) | Bending-resistant straight rail groove | |
| CN105544399A (en) | Minimal-interval separation type thin-wall pier formwork and application thereof | |
| CN105113536A (en) | Movable sidewall formwork erecting system for underground structure and construction method of system | |
| CN1287942C (en) | Welding apparatus and welding method, and method for producing shear reinforcement | |
| CN216689068U (en) | Arch bridge concrete form strutting arrangement | |
| CN207405467U (en) | A kind of Bailey truss section | |
| CN212743380U (en) | Pin-connected panel post-cast strip shutoff instrument | |
| CN211775790U (en) | Square cylinder template reinforcing apparatus | |
| CN209380049U (en) | It is a kind of for making the mold of T-steel | |
| CN107570640B (en) | Double-stirrup bending and welding integrated reinforcing steel bar dislocation preventing mechanism | |
| CN219952768U (en) | Leveling device suitable for assembled large-span prestressed hollow slab | |
| CN107953059B (en) | Intersecting line rod piece angle adjusting device and pipe truss embedded rod piece construction method | |
| CN218862170U (en) | Protective net for constructional engineering | |
| CN210713535U (en) | Auxiliary device for manufacturing grouting sleeve-steel bar connecting piece sample | |
| CN218342415U (en) | Aerated concrete adobe material side is surely repaiied device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |