CN105003035A - Construction method and structure of steel ladder of bridge crane of underground factory building - Google Patents
Construction method and structure of steel ladder of bridge crane of underground factory building Download PDFInfo
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- CN105003035A CN105003035A CN201510067293.XA CN201510067293A CN105003035A CN 105003035 A CN105003035 A CN 105003035A CN 201510067293 A CN201510067293 A CN 201510067293A CN 105003035 A CN105003035 A CN 105003035A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 148
- 239000010959 steel Substances 0.000 title claims abstract description 148
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims description 12
- 239000003351 stiffener Substances 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
- Ladders (AREA)
Abstract
The invention discloses a construction method and a structure of an upper bridge machine steel ladder of an underground factory building, which cancels the lattice column for supporting the upper bridge machine steel ladder in the prior art, and utilizes a cantilever supporting beam at the bottom of a steel ladder platform plate as the support of the whole steel ladder; the beam-passing anchor plate at the end part of the cantilever supporting beam is fixedly connected with the exposed end of the anchor rod anchored in the rock wall through a nut; the steel ladder for the bridge crane of the underground powerhouse is more concise in structure by saving a large amount of steel for constructing the lattice column. The steel ladder platform plate beam supporting mode is adjusted from the simple supporting beam anchored on the lattice columns at two ends to the cantilever beam anchored on the rock anchor rod at one end, so that the stability and reliability of the steel ladder structure of the bridge crane on the underground workshop are effectively enhanced, and a large amount of steel for constructing the lattice columns is effectively saved. Practical tests prove that the invention has the advantages of high structure safety and reliability, remarkable economic benefit, convenient construction, beautiful structure and the like, so the invention is very worthy of popularization. [ b ]
Description
Technical field
the present invention relates to construction method and the structure of bridge machine steel ladder on a kind of underground power house, belong to Hydraulic and Hydro-Power Engineering technical field.
Background technology
on current underground power house, bridge machine stair are generally located at clipping room end by rock mass side, great majority employing lattice column adds waist slab and adds landing slab steel ladder structure again, because of the clipping room supreme bridge machine platform discrepancy in elevation comparatively large (major part is at more than 10m), the design of lattice column needs at substantial steel to avoid flexing unstability, and have ignored Underground powerhouse excavation rock mass itself can as braced structures.Therefore on existing underground power house, the mode of constructing of bridge machine steel ladder is still reasonable not.A kind of rock mass that utilizes of necessary research is as the steel ladder beam braced structures supported.
Summary of the invention
the object of the invention is to: provide a kind of economical rationality, safe and reliable and construction method that is bridge machine steel ladder on the underground power house of easy construction and structure, to overcome the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
on a kind of underground power house of the present invention, the construction method of bridge machine steel ladder is, the method eliminates the lattice column of bridge machine steel ladder in existing support, utilizes the cantilever support beam bottom steel ladder landing slab as the support of whole steel ladder; Being fixedly connected with the anchor pole bared end be anchored in crag through nut through beam anchor slab of cantilever support beam end; To save the great deal of steel of constructing lattice column, make the structure of bridge machine steel ladder on underground power house more succinct.
in preceding method, the method is constructed according to the following steps:
the first step, after underground power house clipping room excavates and carries out first phase crag pneumatically placed concrete and bolt support, the pneumatically placed concrete on crag is cut at steel ladder landing slab cantilever support beam position, crag punches, anchor pole is inserted in the hole, and in hole slip casting by anchor rod anchored;
second step, is buried underground brace summer anchor slab and is connected with anchor pole by brace summer anchor slab by anchor pole end thread, adopts M35 mortar levelling right to beam anchor slab;
3rd step, is welded on cantilever support beam on beam anchor slab, is welded respectively by stiffener with cantilever support beam and anchor slab;
4th step, cantilever support beam is laid steel ladder landing slab, and be welded on cantilever support beam on for supporting by oblique steel ladder and straight steel ladder one end with steel ladder landing slab, the other end is welded on clipping room base plate pre-embedded steel slab or concrete ledge pre-embedded steel slab;
5th step, welds step plate, railing and straight steel ladder extension handrail with oblique steel ladder.
according to bridge machine steel ladder structure on of the present invention a kind of underground power house that said method is formed, this structure comprises the crane girder 13 being positioned at crag 16 side, is provided with bridge machine steel ladder between crane girder 13 and clipping room base plate 15; Described upper bridge machine steel ladder top and middle part are provided with steel ladder landing slab 12, are provided with cantilever support beam 1 bottom steel ladder landing slab 12, and cantilever support beam 1 end is provided with beam anchor slab 2, and beam anchor slab 2 is fixedly connected with anchor pole 4 bared end be anchored in crag 16 through nut 5; Steel ladder landing slab in the middle part of the steel ladder landing slab at upper bridge machine steel ladder top and upper bridge machine steel ladder, and the steel ladder landing slab in the middle part of upper bridge machine steel ladder is connected through oblique steel ladder 8 with between clipping room base plate 15, the steel ladder landing slab at upper bridge machine steel ladder top is connected through straight steel ladder 9 with between crane girder 13 end face.
in aforementioned structure, described crag 16 surface is provided with pneumatically placed concrete 7.
in aforementioned structure, described steel ladder landing slab 12 is provided with two symmetrically arranged cantilever support beams 1, is provided with stiffener 3 between cantilever support beam 1 end and beam anchor slab 2.
in aforementioned structure, the crag of described anchor pole 4 bared end is provided with M35 mortar levelling layer 6.
in aforementioned structure, described oblique steel ladder 8 edge is provided with protective guard 11.
in aforementioned structure, crane girder 13 edge at described straight steel ladder 9 top is provided with straight steel ladder extension handrail 10.
in aforementioned structure, outside the crag 16 at described crane girder 13 top, be provided with damp-proofing wall 14.
owing to have employed technique scheme, the present invention compared with prior art, the present invention by steel ladder platform plate-girder supporting way by the simply supported beam be anchored on the lattice column of two ends, be adjusted to one end and be anchored at semi girder on rock mass anchor pole, this not only effectively enhances stability and the reliability of bridge machine steel ladder structure on underground power house, but also effectively saves the great deal of steel of the lattice column that falls to construct.Advantages such as using through actual tests and prove, the present invention has that structural safety reliability is high, remarkable in economical benefits, easy construction, structure are attractive in appearance, therefore the present invention highly promotes.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
fig. 2 is the partial enlarged drawing in Fig. 1;
fig. 3 is the connection diagram of cantilever support beam and anchor pole; ,
fig. 4 is the structural representation of beam anchor slab.
being labeled as in accompanying drawing: 1-cantilever support beam, 2-beam anchor slab, 3-stiffener, 4-anchor pole, 5-nut, 6-M35 mortar levelling layer, 7-pneumatically placed concrete, the oblique steel ladder of 8-, the straight steel ladder of 9-, the straight steel ladder extension handrail of 10-, 11-protective guard, 12-steel ladder landing slab, 13-crane girder, 14-damp-proofing wall, 15-clipping room base plate, 16-crag.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
the construction method of bridge machine steel ladder on a kind of underground power house of the present invention, as shown in Figure 1, the method eliminates the lattice column of bridge machine steel ladder in existing support, utilizes the cantilever support beam bottom steel ladder landing slab as the support of whole steel ladder; Being fixedly connected with the anchor pole bared end be anchored in crag through nut through beam anchor slab of cantilever support beam end; To save the great deal of steel of constructing lattice column, make the structure of bridge machine steel ladder on underground power house more succinct.The method is constructed according to the following steps: the first step, after underground power house clipping room excavates and carries out first phase crag pneumatically placed concrete and bolt support, the pneumatically placed concrete on crag is cut at steel ladder landing slab cantilever support beam position, crag punches, anchor pole is inserted in the hole, and in hole slip casting by anchor rod anchored; Second step, is buried underground brace summer anchor slab and is connected with anchor pole by brace summer anchor slab by anchor pole end thread, adopts M35 mortar levelling right to beam anchor slab; 3rd step, is welded on cantilever support beam on beam anchor slab, is welded respectively by stiffener with cantilever support beam and anchor slab; 4th step, cantilever support beam is laid steel ladder landing slab, and be welded on cantilever support beam on for supporting by oblique steel ladder and straight steel ladder one end with steel ladder landing slab, the other end is welded on clipping room base plate pre-embedded steel slab or concrete ledge pre-embedded steel slab; 5th step, welds step plate, railing and straight steel ladder extension handrail with oblique steel ladder.
according to bridge machine steel ladder structure on of the present invention a kind of underground power house that said method is formed, as shown in Figure 1, this structure comprises the crane girder 13 being positioned at crag 16 side, is provided with bridge machine steel ladder between crane girder 13 and clipping room base plate 15; Described upper bridge machine steel ladder top and middle part are provided with steel ladder landing slab 12, are provided with cantilever support beam 1 bottom steel ladder landing slab 12, and cantilever support beam 1 end is provided with beam anchor slab 2, and beam anchor slab 2 is fixedly connected with anchor pole 4 bared end be anchored in crag 16 through nut 5; Steel ladder landing slab in the middle part of the steel ladder landing slab at upper bridge machine steel ladder top and upper bridge machine steel ladder, and the steel ladder landing slab in the middle part of upper bridge machine steel ladder is connected through oblique steel ladder 8 with between clipping room base plate 15, the steel ladder landing slab at upper bridge machine steel ladder top is connected through straight steel ladder 9 with between crane girder 13 end face.Crag 16 surface is provided with pneumatically placed concrete 7.Steel ladder landing slab 12 is provided with two symmetrically arranged cantilever support beams 1, is provided with stiffener 3 between cantilever support beam 1 end and beam anchor slab 2.The crag of anchor pole 4 bared end is provided with M35 mortar levelling layer 6.Oblique steel ladder 8 edge is provided with protective guard 11.Crane girder 13 edge at straight steel ladder 9 top is provided with straight steel ladder extension handrail 10.Damp-proofing wall 14 is provided with outside the crag 16 at crane girder 13 top.
Embodiment
for Guizhou Province Ma Ya one-level underground workshop: on clipping room, bridge machine steel ladder overall height 11m(is not containing the straight steel ladder of upper crane back), steel ladder width 0.6m; Each steel ladder landing slab arranges 2 cantilever support beams: adopt length to be 1.258 meters of 18a channel-section steels, brace summer anchor slab adopts 300 × 400 × 25mm steel plate, stiffener adopts 25 × (40 ~ 90) mm steel plates, connected by supporting nuts and washers with the grade III steel anchor pole (L=3m exposes 25cm) of 4 φ 25; Adopt 45 ° of oblique steel ladders of band landing slab from clipping room floor elevation supreme bridge machine drivers' cab elevation, oblique steel ladder beam adopts 18a channel-section steel; Adopt straight steel ladder from upper bridge machine drivers' cab to Rock Crane Rail Support crest level, bench beam adopts L75 × 50 × 5 angle steel; Railing post and handrail all adopt φ 50 × 3 stainless steel tube.
lattice column steel ladder according to prior art then needs 4 11m height lattice columns, 4 6m height lattice columns, every root lattice column needs 4 L180X10mm columns of angles, needs to arrange lacing L80X6 Bolted angle connection reinforce between adjacent two columns of angles every 1m, will at substantial steel.After adopting technical scheme of the present invention, can the consumption of significantly saving steel.And structure is attractive in appearance.
Claims (9)
1. the construction method of bridge machine steel ladder on underground power house, is characterized in that: the method eliminates the lattice column of bridge machine steel ladder in existing support, utilizes the cantilever support beam bottom steel ladder landing slab as the support of whole steel ladder; Being fixedly connected with the anchor pole bared end be anchored in crag through nut through beam anchor slab of cantilever support beam end; To save the great deal of steel of constructing lattice column, make the structure of bridge machine steel ladder on underground power house more succinct.
2. method according to claim 2, is characterized in that: the method is constructed according to the following steps:
The first step, after underground power house clipping room excavates and carries out first phase crag pneumatically placed concrete and bolt support, the pneumatically placed concrete on crag is cut at steel ladder landing slab cantilever support beam position, crag punches, anchor pole is inserted in the hole, and in hole slip casting by anchor rod anchored;
Second step, is buried underground brace summer anchor slab and is connected with anchor pole by brace summer anchor slab by anchor pole end thread, adopts M35 mortar levelling right to beam anchor slab;
3rd step, is welded on cantilever support beam on beam anchor slab, is welded respectively by stiffener with cantilever support beam and anchor slab;
4th step, cantilever support beam is laid steel ladder landing slab, and be welded on cantilever support beam on for supporting by oblique steel ladder and straight steel ladder one end with steel ladder landing slab, the other end is welded on clipping room base plate pre-embedded steel slab or concrete ledge pre-embedded steel slab;
5th step, welds step plate, railing and straight steel ladder extension handrail with oblique steel ladder.
3., by a bridge machine steel ladder structure on the underground power house of method formation described in claim 1 or 2, comprise the crane girder (13) being positioned at crag (16) side, between crane girder (13) and clipping room base plate (15), be provided with bridge machine steel ladder; It is characterized in that: described upper bridge machine steel ladder top and middle part are provided with steel ladder landing slab (12), steel ladder landing slab (12) bottom is provided with cantilever support beam (1), cantilever support beam (1) end is provided with beam anchor slab (2), and beam anchor slab (2) is fixedly connected with anchor pole (4) bared end be anchored in crag (16) through nut (5); Steel ladder landing slab in the middle part of the steel ladder landing slab at upper bridge machine steel ladder top and upper bridge machine steel ladder, and steel ladder landing slab in the middle part of upper bridge machine steel ladder with between clipping room base plate (15) between be connected through oblique steel ladder (8), the steel ladder landing slab at upper bridge machine steel ladder top is connected through straight steel ladder (9) with between crane girder (13) end face.
4. bridge machine steel ladder structure on underground power house according to claim 3, is characterized in that: described crag (16) surface is provided with pneumatically placed concrete (7).
5. bridge machine steel ladder structure on underground power house according to claim 3, it is characterized in that: described steel ladder landing slab (12) is provided with two symmetrically arranged cantilever support beams (1), is provided with stiffener (3) between cantilever support beam (1) end and beam anchor slab (2).
6. bridge machine steel ladder structure on underground power house according to claim 3, is characterized in that: the crag of described anchor pole (4) bared end is provided with M35 mortar levelling layer (6).
7. bridge machine steel ladder structure on underground power house according to claim 3, is characterized in that: described oblique steel ladder (8) edge is provided with protective guard (11).
8. bridge machine steel ladder structure on underground power house according to claim 3, is characterized in that: crane girder (13) edge at described straight steel ladder (9) top is provided with straight steel ladder extension handrail (10).
9. bridge machine steel ladder structure on underground power house according to claim 3, is characterized in that: be provided with damp-proofing wall (14) outside the crag (16) at described crane girder (13) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067293.XA CN105003035B (en) | 2015-02-10 | 2015-02-10 | Construction method and structure of steel ladder of bridge crane of underground factory building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067293.XA CN105003035B (en) | 2015-02-10 | 2015-02-10 | Construction method and structure of steel ladder of bridge crane of underground factory building |
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| Publication Number | Publication Date |
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| CN105003035A true CN105003035A (en) | 2015-10-28 |
| CN105003035B CN105003035B (en) | 2017-07-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013637A (en) * | 2016-07-22 | 2016-10-12 | 中铁第四勘察设计院集团有限公司 | L-shaped stair structure for subway station |
| CN107989448A (en) * | 2017-12-11 | 2018-05-04 | 合肥霞康电子商务有限公司 | A kind of grain depot with side ladder |
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| CN202047408U (en) * | 2011-04-21 | 2011-11-23 | 中国十七冶集团有限公司 | Massif non-damage embedded anchoring device |
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| CN103225257A (en) * | 2013-04-09 | 2013-07-31 | 中钢集团马鞍山矿山研究院有限公司 | Cantilever beam structure of antique plank road along cliff and construction technology thereof |
| CN203488088U (en) * | 2013-08-07 | 2014-03-19 | 中国有色集团抚顺红透山矿业有限公司 | Steel structure of ladder compartment for pedestrian courtyard |
| CN203769217U (en) * | 2013-12-31 | 2014-08-13 | 广东南海国际建筑设计有限公司 | Independent cantilever steel structure stair |
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2015
- 2015-02-10 CN CN201510067293.XA patent/CN105003035B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1561678A (en) * | 2004-03-18 | 2005-01-12 | 潘传瑞 | Plant cultivating groove on cliff and its construction method |
| JP2006265846A (en) * | 2005-03-22 | 2006-10-05 | Matsushita Electric Works Ltd | Decorative method of wall body of cantilever stairs |
| CN101936068A (en) * | 2010-08-27 | 2011-01-05 | 山东高阳建设有限公司 | Method for constructing cliff scaffold platform |
| CN202047408U (en) * | 2011-04-21 | 2011-11-23 | 中国十七冶集团有限公司 | Massif non-damage embedded anchoring device |
| CN102409613A (en) * | 2011-08-17 | 2012-04-11 | 中国十七冶集团有限公司 | Construction method for installing steel beam of plank road built along mountain and near river |
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| CN203769217U (en) * | 2013-12-31 | 2014-08-13 | 广东南海国际建筑设计有限公司 | Independent cantilever steel structure stair |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013637A (en) * | 2016-07-22 | 2016-10-12 | 中铁第四勘察设计院集团有限公司 | L-shaped stair structure for subway station |
| CN107989448A (en) * | 2017-12-11 | 2018-05-04 | 合肥霞康电子商务有限公司 | A kind of grain depot with side ladder |
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| CN105003035B (en) | 2017-07-11 |
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