CN102733419A - Supporting structure of underground plant floor slab and construction method - Google Patents
Supporting structure of underground plant floor slab and construction method Download PDFInfo
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- CN102733419A CN102733419A CN2012100944343A CN201210094434A CN102733419A CN 102733419 A CN102733419 A CN 102733419A CN 2012100944343 A CN2012100944343 A CN 2012100944343A CN 201210094434 A CN201210094434 A CN 201210094434A CN 102733419 A CN102733419 A CN 102733419A
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- anchor pole
- floor
- supporting construction
- shearing resistance
- power house
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Abstract
The invention discloses a supporting structure of an underground plant floor slab and a construction method. The supporting structure comprises an anchor rod beam (2), wherein the anchor rod beam (2) is fixed on an underground plant rock wall (1) through an anchor rod and is connected with a secondary beam (3), and a floor slab (4) is arranged on the anchor rod beam (2) and the secondary beam (3) respectively. According to the supporting structure of the underground plate floor slab, disclosed by the invention, the floor slabs and the secondary beam are directly and fixedly supported on the anchor rod beam of the underground plant rock wall, and supporting beams of an underground plant and pillars of the floor slabs are omitted so that the excavation span of the underground plant can be effectively reduced, the stability of surrounding rocks is improved, the excavation supporting engineering amount of a hole chamber can be reduced, and the engineering investment is saved.
Description
Technical field
the present invention relates to a kind of supporting construction and job practices of underground power house floor, belong to the construction engineering technical field of underground power house.
Background technology
In
hydroelectric project, underground power house cavity group cavern quantity is many, scale is big, and spatial placement is staggered complicated, and surrounding rock of chamber stability is outstanding, and the size of factory building excavation span still is responsive to surrounding rock stability.Traditional underground power house floor is bearing on concrete column or the brick rod structure, and the setting of pillar has occupied certain space, arranges needs for satisfying electromechanical equipment, must strengthen the excavation span of factory building.And the increase of excavation span will be unfavorable for can increasing the adjoining rock stability of underground power house cavity group the hole simultaneously to dig and the support engineering amount, prolong the duration, increase construction investment.
Summary of the invention
the objective of the invention is to, and a kind of supporting construction and job practices of underground power house floor is provided.Can effectively reduce factory building excavation span, help the adjoining rock stability of underground power house cavity group, can guarantee the safety and saving construction investment of floor slab structure simultaneously again.
Technical scheme of the present invention:
The supporting construction of
underground power house floor comprises through anchor pole being fixed on the anchor pole beam on the underground power house crag that the anchor pole beam is connected with secondary beam, on anchor pole beam and secondary beam, is provided with floor.
In
aforementioned supporting construction, the vertical cross-section of said anchor pole beam is trapezoidal, and the bottom surface of anchor pole beam and the angle of horizontal plane are 30 °～45 °.
In
aforementioned supporting construction, the vertical distance H of inclined-plane bottom to floor end face is not more than 3 times of vertical distance h of top, inclined-plane to floor end face at the bottom of the anchor pole beam at the bottom of the said anchor pole beam.
In
aforementioned supporting construction, said anchor pole beam is arranged along the length direction of underground power house.
In
aforementioned supporting construction, said anchor pole comprises and tiltedly draws anchor pole and shearing resistance anchor pole.
In
aforementioned supporting construction, said shearing resistance anchor pole comprises horizontal shearing resistance anchor pole and diagonal brace shearing resistance anchor pole; Tiltedly draw anchor pole and the shearing resistance anchor pole length direction separation along underground power house, spacing is 0.7m～1.2m.
In
aforementioned supporting construction, said tiltedly to draw the angle of inclination of anchor pole and the angle of horizontal plane be 15 °～30 °; And is 10～20cm at the crag place apart from the distance of anchor pole top surface of the beam.
In
aforementioned supporting construction, the angle of inclination of said diagonal brace shearing resistance anchor pole is identical with the angle of inclination of anchor pole soffit; And high 10～20cm apart from anchor pole beam base.
According to the job practices that aforementioned supporting construction is formulated, this method is constructed by following operation:
1., on the underground power house crag, make a call to one group of bolthole according to designing requirement: comprise lateral aperture, bow hole and uphole;
2., in lateral aperture, bow hole and uphole, inject cement mortar or cement paste, respectively with horizontal shearing resistance anchor pole, diagonal brace shearing resistance anchor pole with tiltedly draw anchor pole to insert in lateral aperture, bow hole and the uphole, all anchor poles are fixed in the bolthole then;
3., treat that cement mortar or cement paste in the bolthole reach after the design strength, with anchor pole and anchor pole beam steel skeleton firm welding; Colligation secondary beam cage of reinforcement and floor bar skeleton on this basis again, secondary beam cage of reinforcement and floor bar skeleton should anchor in the anchor pole beam;
4., outside anchor pole beam steel skeleton, secondary beam cage of reinforcement and floor bar skeleton, build template, the concreting of completion anchor pole beam, secondary beam and floor;
In
aforementioned job practices, said operation cement mortar or cement paste strength grade 2. is not less than M20, said operation 4. in concrete strength grade be not less than C25.
compared with prior art; Underground power house floor supporting construction of the present invention; Floor and secondary beam directly are bearing on the anchor pole beam that is fixed on the factory building crag; Cancelled the pillar of brace summer and floor in the underground power house, can effectively reduce factory building excavation span, increase surrounding rock stability, can reduce cavern excavation support engineering amount again, save construction investment.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional view at anchor pole beam of the present invention position.
Being labeled as in
accompanying drawing: 1-underground power house crag, 2-anchor pole beam, 3-secondary beam, 4-floor, 5-tiltedly draw anchor pole, the horizontal shearing resistance anchor pole of 6-, 7-diagonal brace shearing resistance anchor pole, 8-anchor pole beam steel skeleton, 9-secondary beam cage of reinforcement, 10-floor bar skeleton.
The specific embodiment
are done further detailed description below in conjunction with accompanying drawing and embodiment to the present invention, but not as to any restriction of the present invention.
The supporting construction of
a kind of underground power house floor, as depicted in figs. 1 and 2.Comprise through anchor pole and be fixed on the anchor pole beam 2 on the underground power house crag 1.Anchor pole comprises and tiltedly draws anchor pole 5 and shearing resistance anchor pole that the shearing resistance anchor pole comprises horizontal shearing resistance anchor pole 6 and diagonal brace shearing resistance anchor pole 7; Tiltedly drawing the angle of inclination of anchor pole 5 and the angle of horizontal plane is 15 °～30 °; And is 10～20cm at the crag place apart from the distance of anchor pole top surface of the beam.The angle of inclination of diagonal brace shearing resistance anchor pole 7 is identical with the angle of inclination of anchor pole beam 2 bottom surfaces; And high 10～20cm apart from anchor pole beam 2 bases; Tiltedly draw anchor pole 5, horizontal shearing resistance anchor pole 6 and the diagonal brace shearing resistance anchor pole length direction separation along underground power house, spacing is 0.7m～1.2m.The vertical cross-section of anchor pole beam 2 is trapezoidal, and the bottom surface of anchor pole beam 2 and the angle of horizontal plane are 30 °～45 °; Bottom, inclined-plane, 2 end of anchor pole beam is not more than 3 times of (see figure 2)s of the vertical distance h of top, inclined-plane, 2 end of anchor pole beam to floor 4 end faces to the vertical distance H of floor 4 end faces; Anchor pole beam 2 is arranged along the length direction of underground power house.Anchor pole beam 2 is connected with secondary beam 3, on anchor pole beam 2 and secondary beam 3, is provided with floor 4.
The job practices that formulate according to aforementioned supporting construction
, as depicted in figs. 1 and 2.This method is constructed by following operation:
One group of bolthole is made a call to according to designing requirement in
on underground power house crag 1; Comprise lateral aperture, bow hole and uphole; In lateral aperture, bow hole and uphole, inject cement mortar or the cement paste that strength grade is not less than M20; Respectively with horizontal shearing resistance anchor pole 6, diagonal brace shearing resistance anchor pole 7 with tiltedly draw anchor pole 5 to insert in lateral apertures, bow hole and the uphole, all anchor poles are fixed in the bolthole then; Treat that cement mortar or cement paste in the bolthole reach after the design strength, with anchor pole and anchor pole beam steel skeleton 8 firm welding; Colligation secondary beam cage of reinforcement 9 and floor bar skeleton 10 on this basis again; Outside anchor pole beam steel skeleton 8, secondary beam cage of reinforcement 9 and floor bar skeleton 10, build template again, the concrete that is not less than C25 with strength grade is accomplished building of anchor pole beam 2, secondary beam 3 and floor 4.
Claims (10)
1. the supporting construction of underground power house floor, it is characterized in that: comprise through anchor pole being fixed on the anchor pole beam (2) on the underground power house crag (1), anchor pole beam (2) is connected with secondary beam (3), on anchor pole beam (2) and secondary beam (3), is provided with floor (4).
2. according to the said supporting construction of claim 1, it is characterized in that: the vertical cross-section of said anchor pole beam (2) is trapezoidal, and the bottom surface of anchor pole beam (2) and the angle of horizontal plane are 30 °～45 °.
3. according to the said supporting construction of claim 2, it is characterized in that: the vertical distance H of said anchor pole beam (2) inclined-plane, end bottom to floor (4) end face is not more than 3 times of vertical distance h of top, anchor pole beam (2) inclined-plane, the end to floor (4) end face.
4. according to the said supporting construction of claim 2, it is characterized in that: said anchor pole beam (2) is arranged along the length direction of underground power house.
5. according to the said supporting construction of claim 1, it is characterized in that: said anchor pole comprises and tiltedly draws anchor pole (5) and shearing resistance anchor pole; Tiltedly draw anchor pole (5) and the shearing resistance anchor pole length direction separation along underground power house, spacing is 0.7m～1.2m.
6. according to the said supporting construction of claim 5, it is characterized in that: said shearing resistance anchor pole comprises horizontal shearing resistance anchor pole (6) and diagonal brace shearing resistance anchor pole (7).
7. according to the said supporting construction of claim 5, it is characterized in that: said tiltedly to draw the angle of inclination of anchor pole (5) and the angle of horizontal plane be 15 °～30 °; And is 10～20cm at the crag place apart from the distance of anchor pole top surface of the beam.
8. according to the said supporting construction of claim 6, it is characterized in that: the angle of inclination of said diagonal brace shearing resistance anchor pole (7) is identical with the angle of inclination of anchor pole beam (2) bottom surface; And apart from anchor pole beam (2) high 10～20cm in base.
9. according to the job practices of the said supporting construction of the arbitrary claim of claim 1～8, it is characterized in that: this method is constructed by following operation:
1., go up at underground power house crag (1) according to designing requirement and make a call to one group of bolthole: comprise lateral aperture, bow hole and uphole;
2., in lateral aperture, bow hole and uphole, inject cement mortar or cement paste, then respectively with horizontal shearing resistance anchor pole (6), diagonal brace shearing resistance anchor pole (7) with tiltedly draw in anchor pole (5) insertion lateral aperture, bow hole and the uphole, all anchor poles are fixed in the bolthole;
3., treat that cement mortar or cement paste in the bolthole reach after the design strength, with anchor pole and anchor pole beam steel skeleton (8) firm welding; Colligation secondary beam cage of reinforcement (9) and floor bar skeleton (10) on this basis again, secondary beam cage of reinforcement (9) and floor bar skeleton (10) should anchor in the anchor pole beam (2);
4., outside anchor pole beam steel skeleton (8), secondary beam cage of reinforcement (9) and floor bar skeleton (10), build template, the concreting of completion anchor pole beam (2), secondary beam (3) and floor (4).
10. according to the said job practices of claim 9, it is characterized in that: said operation cement mortar or cement paste strength grade 2. is not less than M20, said operation 4. in concrete strength grade be not less than C25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100944343A CN102733419A (en) | 2012-04-01 | 2012-04-01 | Supporting structure of underground plant floor slab and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100944343A CN102733419A (en) | 2012-04-01 | 2012-04-01 | Supporting structure of underground plant floor slab and construction method |
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| Publication Number | Publication Date |
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| CN102733419A true CN102733419A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100944343A Pending CN102733419A (en) | 2012-04-01 | 2012-04-01 | Supporting structure of underground plant floor slab and construction method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009235809A (en) * | 2008-03-27 | 2009-10-15 | Sanshin Corp | Construction method for dismantlement and removal of underground structure having foundation pile |
| CN201473966U (en) * | 2009-09-08 | 2010-05-19 | 中国水电顾问集团北京勘测设计研究院 | Novel paving base structure of L type suspension rigid foundation for rocky crane beams in underground plants |
| CN201485974U (en) * | 2009-07-08 | 2010-05-26 | 中国电力工程顾问集团东北电力设计院 | Plug-in floor steel secondary beam node structure |
| CN202500152U (en) * | 2012-04-01 | 2012-10-24 | 中国水电顾问集团贵阳勘测设计研究院 | Supporting structure of underground factory floor |
-
2012
- 2012-04-01 CN CN2012100944343A patent/CN102733419A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009235809A (en) * | 2008-03-27 | 2009-10-15 | Sanshin Corp | Construction method for dismantlement and removal of underground structure having foundation pile |
| CN201485974U (en) * | 2009-07-08 | 2010-05-26 | 中国电力工程顾问集团东北电力设计院 | Plug-in floor steel secondary beam node structure |
| CN201473966U (en) * | 2009-09-08 | 2010-05-19 | 中国水电顾问集团北京勘测设计研究院 | Novel paving base structure of L type suspension rigid foundation for rocky crane beams in underground plants |
| CN202500152U (en) * | 2012-04-01 | 2012-10-24 | 中国水电顾问集团贵阳勘测设计研究院 | Supporting structure of underground factory floor |
Non-Patent Citations (1)
| Title |
|---|
| 宁华晚等: "索风营水电站地下厂房设计优化及技术特点", 《水利水电技术》 * |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 550081 No. 16 Xing Qian Road, Jinyang New District, Guizhou, Guiyang Applicant after: China Kweiyang survey and design research institute company limited of electricity Jian group Address before: 550081 No. 16 Xing Qian Road, Jinyang New District, Guizhou, Guiyang Applicant before: Guiyang Prospection & Design Inst, China Hydraulic Power Consultary Group |
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Free format text: CORRECT: APPLICANT; FROM: GUIYANG PROSPECTION + DESIGN INST, CHINA HYDRAULIC POWER CONSULTARY GROUPTO: CHINA POWER GROUP GUIYANG INVESTIGATION DESIGN + RESEARCH INSTITUTE CO., LTD. |
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Application publication date: 20121017 |