CN104088296B - Soft clay area basement adds a layer construction method - Google Patents
Soft clay area basement adds a layer construction method Download PDFInfo
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- CN104088296B CN104088296B CN201410363941.1A CN201410363941A CN104088296B CN 104088296 B CN104088296 B CN 104088296B CN 201410363941 A CN201410363941 A CN 201410363941A CN 104088296 B CN104088296 B CN 104088296B
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- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000009412 basement excavation Methods 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 4
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Abstract
The invention discloses a kind of soft clay area basement and add a layer construction method, comprise the following steps: step one, the newly-increased support wall of enforcement inside the completed original support wall of soft clay area basement; Step 2, carry out soil excavation and support erection, steel bar concrete is set in described newly-increased support wall wall top mark eminence and encloses purlin; Step 3, continuing to dig downwards to adding the layer end, hole, adding the layer end, hole and described newly-increased support wall adjacent corners position is carried out local and backbreak; Step 4, pouring structure base plate, and arrange bracket structure on position is backbreak in local; Step 5, cut described newly-increased support wall and be in described steel bar concrete and enclose part between purlin and structure base slab; Step 6, successively remove bracing frame, water build floor until the completing of structure roof.The present invention, under the prerequisite of general safety reliability not affecting basement, cuts occupying the newly-increased support wall part adding layer basement area, effectively eliminates back the stage of building to increase support wall occupying basement building area newly.
Description
Technical field
The present invention relates to Construction Technique of Underground Works field, particularly relate to a kind of soft clay area basement and add a layer construction method.
Background technology
In the Construction of Basement of soft clay area, the requirement that pattern foundation pit supporting structure wall length or intensity can not meet excavation of foundation pit depth down has been implemented because the reasons such as the overall underground space planning adjustment in region, basement Function Extension cause, and simply adopt row's support wall formation composite support system of setting up inside existing support wall can solve the safety problem in excavation of foundation pit, but how safe and reliable, eliminating back the stage of building, to increase support wall newly to basement building area " occupying " impact be still unsolved technical barrier practically.
Therefore, the applicant is devoted to exploitation one and can constructs for soft clay area basement carries out adding layer practically, and can not occupy the soft clay area basement adding layer building area and add a layer construction method.
Summary of the invention
Because the above-mentioned deficiency of prior art, the present invention proposes one can construct for soft clay area basement carries out adding layer practically, and can not occupy the soft clay area basement adding layer building area and add a layer construction method.
For achieving the above object, the invention provides a kind of soft clay area basement and add a layer construction method, comprise the following steps:
Step one, inside the completed original support wall of soft clay area basement, implement newly-increased support wall.
Step 2, carry out soil excavation by the construction method of traditional cut and cover method foundation ditch and support is established, steel bar concrete is set in described newly-increased support wall wall top mark eminence and encloses purlin, the vertical reinforcement of described newly-increased support wall anchors into described steel bar concrete and encloses in purlin, and described steel bar concrete encloses purlin also links together with described original support wall.
Step 3, continue to dig downwards to adding the layer end, hole, and carry out local and backbreak adding the layer end, the hole corner positions adjacent with described newly-increased support wall.
Step 4, pouring structure base plate, and backbreak on position arrange bracket structure in the described local, the end, layer hole that adds, described bracket structure is connected on described newly-increased support wall and described structure base slab, reaches the support of removing bottom after design strength until described structure base slab.
Step 5, cut described newly-increased support wall and be in described steel bar concrete and enclose part between purlin and structure base slab.
Step 6, successively remove support by open cut along the construction method of building basement, water build floor until the completing of structure roof.
Preferably, the described newly-increased support wall in described step one is constructed inside described original support wall, is reserved with space, is filled with reinforcing force transfer body in described space between described newly-increased support wall and described original support wall.
Preferably, described steel bar concrete in described step 2 encloses purlin and comprises and hang muscle, bar planting and steel concrete, described muscle one end of hanging is connected on described steel concrete, the other end is fixed in described original support wall, one end of described bar planting is implanted in described original support wall, and the other end is implanted in described steel concrete.
Preferably, the described soft clay area basement before not constructing is underground double-layer structure, and the described soft clay area basement after construction is F3/B3 structure.
The beneficial effect that soft clay area of the present invention basement adds layer construction method is as follows:
1) the present invention utilizes the mode that adds newly-increased support wall to provide go along with sb. to guard him basis for adding layer construction further, be convenient to the safe excavation that basement adds the earthwork of layer work progress, arrange steel bar concrete enclose purlin on the wall top of newly-increased support wall and carry out local and backbreak and add down bracket structure adding the layer end, hole simultaneously, not only achieve the further consolidation to newly-increased support wall, and be convenient to after structure base slab reaches design strength, under the prerequisite of general safety reliability not affecting basement, cut occupying the newly-increased support wall part adding layer basement area, effective elimination is returned the stage of building and is increased support wall occupying basement building area newly.
2) the present invention sets up a row and increases support wall newly inside original support wall, and is filled with reinforcing force transfer body in space reserved between described newly-increased support wall and described original support wall, achieves the reliable composite support system of structure.
3) steel bar concrete is set on newly-increased support wall wall top and encloses effective connection that purlin achieves the old and new's support wall.
4) backbreak on position arrange bracket structure in the described local, the end, layer hole that adds, achieve effective transmission of foundation ditch horizontal force and ensure the integrality of structure base slab.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is that specific embodiment soft clay area basement adds layer construction operating mode one.
Fig. 2 is that specific embodiment soft clay area basement adds layer construction operating mode two.
Fig. 3 is that specific embodiment soft clay area basement adds layer construction operating mode three.
Fig. 4 is that specific embodiment soft clay area basement adds layer construction operating mode four.
Fig. 5 is that specific embodiment soft clay area basement adds layer construction operating mode five.
Fig. 6 is the A place enlarged diagram of Fig. 2.
Fig. 7 is the B place enlarged diagram of Fig. 3.
Detailed description of the invention
As shown in the figure, a kind of soft clay area basement of the present embodiment adds a layer construction method, implementing to add layer by two layers, underground is F3/B3, namely the described soft clay area basement before not constructing is underground double-layer structure, described soft clay area basement after construction is F3/B3 structure, specifically comprises the following steps:
Step one, as shown in Figure 1, implements newly-increased support wall 2 inside the completed original support wall 1 of soft clay area basement.
Step 2, as shown in Figure 2 and Figure 6, carry out soil excavation by the construction method of traditional cut and cover method foundation ditch and arrange supporting erection, steel bar concrete is set in newly-increased support wall 2 wall top mark eminence and encloses purlin 5, the vertical reinforcement of newly-increased support wall 2 anchors into steel bar concrete and encloses in purlin 5, and steel bar concrete encloses purlin 5 also links together with original support wall 1.
Step 3, as shown in Figure 2, continues to dig downwards to adding the layer end 4, hole, and carries out local and backbreak adding the layer end 4, the hole corner positions adjacent with newly-increased support wall 2.
Step 4, as shown in Figure 3 and Figure 7, pouring structure base plate 6, and backbreak on position and arrange bracket structure 7 adding local, the end 4, layer hole, the bracket structure 7 that falls is connected on newly-increased support wall 2 and structure base slab 6, reaches the support 3 of removing bottom after design strength until structure base slab 6.
Step 5, as shown in Figure 4, cuts newly-increased support wall 2 and is in steel bar concrete and encloses part between purlin 5 and structure base slab 6.
Step 6, as shown in Figure 5, successively removes support by open cut along the construction method of building basement, waters build floor until the completing of structure roof.
Concrete, the newly-increased support wall 2 of the present embodiment in described step one is constructed inside original support wall 1, increases newly and is reserved with space between support wall 2 and original support wall 1, as shown in Figure 1, be filled with in described space and reinforce force transfer body 8, form the reliable composite support system of structure.As shown in Figure 6, steel bar concrete in step 2 described in the present embodiment encloses purlin 5 and comprises and hang muscle 51, bar planting 52 and steel concrete 53, hanging muscle 51 one end is connected on steel concrete 53, the other end is fixed in original support wall 1, one end of bar planting 52 is implanted in original support wall 1, and the other end is implanted in steel concrete 53.
Exemplary, as shown in the figure, the present embodiment is applied in the Soft Deep Foundation Pit of two layers, underground, be positioned at the medial surface place of original support wall 1 of Foundation Pit bottom, formed and carry out a row towards excavation of foundation pit depth direction multiple bored pile of constructing and increase support wall 2 newly, and on space reserved between newly-increased support wall 2 and the binding face of original support wall 1, utilize rotary churning pile to inject concrete grout and tamp formation reinforcing force transfer body 8, original support wall 1, reinforcing force transfer body 8 and newly-increased support wall 2 three effectively connect as one, construct and define the reliable composite support system of structure, there is provided go along with sb. to guard him basis for adding layer construction further, be convenient to the safe excavation that basement adds the earthwork of layer work progress, arrange steel bar concrete enclose purlin 5 on the wall top of newly-increased support wall 2 and carry out local and backbreak and add down bracket structure 7 adding the layer end 4, hole simultaneously, not only achieve the further consolidation to newly-increased support wall 2, and be convenient to after structure base slab 6 reaches design strength, under the prerequisite of general safety reliability not affecting basement, cut occupying newly-increased support wall 2 part adding layer basement area, effective elimination is returned the stage of building and is increased occupying of support wall 2 pairs of basement building areas newly.Wherein, newly-increased support wall 2 wall top arranges steel bar concrete and encloses effective connection that purlin 5 achieves the old and new's support wall, backbreaks on position and arranges bracket structure 7 adding local, the end 4, layer hole, achieves effective transmission of foundation ditch horizontal force and ensures the integrality of structure base slab 6.In addition, be filled with in the space that the present embodiment is also reserved between newly-increased support wall 2 and original support wall 1 and reinforce force transfer body 8, constructed the reliable composite support system of structure.
Of course, the present invention can also be different to the number of plies as required basement carry out two-layer or more the number of plies add layer construction, the construction method of traditional cut and cover method foundation ditch that the present embodiment relates to and open cut are prior art along the construction method of building basement, those skilled in the art can use for reference prior art in accordance with the teachings of the present invention and carry out constructing, and repeat no more herein.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (4)
1. soft clay area basement adds a layer construction method, it is characterized in that, comprises the following steps:
Step one, inside the completed original support wall of soft clay area basement, implement newly-increased support wall;
Step 2, carry out soil excavation by the construction method of traditional cut and cover method foundation ditch and support is established, steel bar concrete is set in described newly-increased support wall wall top mark eminence and encloses purlin, the vertical reinforcement of described newly-increased support wall anchors into described steel bar concrete and encloses in purlin, and described steel bar concrete encloses purlin also links together with described original support wall;
Step 3, continue to dig downwards to adding the layer end, hole, and carry out local and backbreak adding the layer end, the hole corner positions adjacent with described newly-increased support wall;
Step 4, pouring structure base plate, and backbreak on position arrange bracket structure in the described local, the end, layer hole that adds, described bracket structure is connected on described newly-increased support wall and described structure base slab, reaches the support of removing bottom after design strength until described structure base slab;
Step 5, cut described newly-increased support wall and be in described steel bar concrete and enclose part between purlin and structure base slab;
Step 6, successively remove support by open cut along the construction method of building basement, water build floor until the completing of structure roof.
2. soft clay area as claimed in claim 1 basement adds a layer construction method, it is characterized in that: the described newly-increased support wall in described step one is constructed inside described original support wall, be reserved with space between described newly-increased support wall and described original support wall, in described space, be filled with reinforcing force transfer body.
3. soft clay area as claimed in claim 1 basement adds a layer construction method, it is characterized in that: the described steel bar concrete in described step 2 encloses purlin and comprises and hang muscle, bar planting and steel concrete, described muscle one end of hanging is connected on described steel concrete, the other end is fixed in described original support wall, one end of described bar planting is implanted in described original support wall, and the other end is implanted in described steel concrete.
4. the soft clay area basement as described in any one of claim 1-3 adds a layer construction method, it is characterized in that: the described soft clay area basement before not constructing is underground double-layer structure, and the described soft clay area basement after construction is F3/B3 structure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286445.0 | 2014-06-24 | ||
| CN201410286445 | 2014-06-24 | ||
| CN201410363941.1A CN104088296B (en) | 2014-06-24 | 2014-07-29 | Soft clay area basement adds a layer construction method |
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| CN201410363941.1A CN104088296B (en) | 2014-06-24 | 2014-07-29 | Soft clay area basement adds a layer construction method |
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| CN104088296A CN104088296A (en) | 2014-10-08 |
| CN104088296B true CN104088296B (en) | 2016-02-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107119711A (en) * | 2017-07-06 | 2017-09-01 | 中国铁路设计集团有限公司 | A kind of connected structure and construction method for abutting existing transfer station on a large scale |
| CN110616714B (en) * | 2019-09-12 | 2021-07-23 | 上海建工集团股份有限公司 | Novel enclosure construction method for existing underground structure deepening |
| CN110616738A (en) * | 2019-09-12 | 2019-12-27 | 上海建工集团股份有限公司 | Underground space vertical building construction method and structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0382608A1 (en) * | 1989-02-07 | 1990-08-16 | Sondages Injections Forages "S.I.F." Entreprise Bachy | Method of making an excavation by the trench wall technique involving the use of releasably prestressed floor elements |
| JPH03262833A (en) * | 1990-03-14 | 1991-11-22 | Taisei Corp | Construction of underground floor |
| CN1391013A (en) * | 2002-07-25 | 2003-01-15 | 上海隧道工程股份有限公司 | Technology building up diagonal space brace by reverse masonry method |
| CN1687536A (en) * | 2005-06-07 | 2005-10-26 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
| CN102493487A (en) * | 2011-12-13 | 2012-06-13 | 上海市第一建筑有限公司 | Method for constructing foundation slab embedded with concrete supports |
| CN103195085A (en) * | 2013-04-02 | 2013-07-10 | 东南大学 | Downward story-adding basement and construction method thereof |
-
2014
- 2014-07-29 CN CN201410363941.1A patent/CN104088296B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0382608A1 (en) * | 1989-02-07 | 1990-08-16 | Sondages Injections Forages "S.I.F." Entreprise Bachy | Method of making an excavation by the trench wall technique involving the use of releasably prestressed floor elements |
| JPH03262833A (en) * | 1990-03-14 | 1991-11-22 | Taisei Corp | Construction of underground floor |
| CN1391013A (en) * | 2002-07-25 | 2003-01-15 | 上海隧道工程股份有限公司 | Technology building up diagonal space brace by reverse masonry method |
| CN1687536A (en) * | 2005-06-07 | 2005-10-26 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
| CN102493487A (en) * | 2011-12-13 | 2012-06-13 | 上海市第一建筑有限公司 | Method for constructing foundation slab embedded with concrete supports |
| CN103195085A (en) * | 2013-04-02 | 2013-07-10 | 东南大学 | Downward story-adding basement and construction method thereof |
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Address after: 200011 Tibet South Road, Shanghai, No. 1170, No. Patentee after: Shanghai urban construction design & Research Institute (Group) Co., Ltd. Address before: 200011 Tibet South Road, Shanghai, No. 1170, No. Patentee before: Shanghai Urban Construction Design & Research Institute |