CN112814008A - Steel pipe pile structure of steel box girder and construction method - Google Patents
Steel pipe pile structure of steel box girder and construction method Download PDFInfo
- Publication number
- CN112814008A CN112814008A CN202110181567.3A CN202110181567A CN112814008A CN 112814008 A CN112814008 A CN 112814008A CN 202110181567 A CN202110181567 A CN 202110181567A CN 112814008 A CN112814008 A CN 112814008A
- Authority
- CN
- China
- Prior art keywords
- pipe pile
- steel
- steel pipe
- box girder
- concrete foundation
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 115
- 239000010959 steel Substances 0.000 title claims abstract description 115
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 239000010410 layer Substances 0.000 claims abstract description 31
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 10
- 239000011449 brick Substances 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims 7
- 238000000034 method Methods 0.000 abstract description 15
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
Abstract
The application discloses a steel pipe pile structure of a steel box girder and a construction method, wherein the steel box girder is provided with a steel pile body; the concrete foundation layer is positioned below the surface layer; the reinforcing area is positioned below the concrete foundation layer; and one end of the steel pipe pile is positioned below the steel box girder and connected with the steel box girder, and the other end of the steel pipe pile is inserted into the ground surface layer and penetrates through the concrete foundation layer and the reinforcing area. The structure is simple and feasible, professional equipment such as a special grouting machine for entering a field is not needed, and construction cost is low. The method is not influenced by geological porosity and the like, and has good applicability. When the foundation strength meets the requirement, the triangular bearing plates are welded at the corresponding positions, and then the steel pipe pile can be stressed to prevent the steel pipe pile from continuously sinking.
Description
Technical Field
The application relates to the technical field of bridges, in particular to a steel pipe pile structure of a steel box girder and a construction method.
Background
The support method is a common process for mounting a steel box girder, and during construction near a river beach or a weak foundation, a steel pipe pile is often adopted for stress support, and the friction force between the side wall of the steel pipe pile and a soil body is mainly utilized to offset the upper load. However, in the installation process of the steel box girder, when the steel pipe pile support is subjected to special adverse conditions, such as insufficient friction between the steel pipe pile and the soil body caused by flooding, long-term local scouring, local weak geology and the like, the steel pipe pile can slowly sink, and at the moment, the steel pipe pile needs to be reinforced.
The process frequently adopted in engineering is a cement-water glass grouting process, namely grouting holes are firstly drilled at the periphery of a soil body, grouting solution is mixed according to a mixing proportion, a grouting machine is used for grouting, the grouting holes are blocked and the like, the process can quickly fill holes and other unfavorable geology in a foundation and the like under a certain environment, the bearing capacity of the foundation is improved, but the process has the following defects: (1) the grouting process is suitable for reinforcing the shallow concrete strip foundation, the depth of the steel pipe pile foundation is large, and the grouting effect cannot be reasonably judged. (2) The grouting process is suitable for sandy soil or silty soil geology with high porosity, and the solution mobility is good. However, the geology of the project is cohesive soil, the porosity of the soil body is small, and the solution fluidity is poor. (3) The grouting machine needs long time for entering the field, needs a special person to operate the machine, and has high manufacturing cost.
Disclosure of Invention
The main purpose of this application is to provide a steel-pipe pile structure of steel-pipe box girder, realizes utilizing the peripheral soil body of steel-pipe pile to carry out the bearing atress and prevents that the steel-pipe pile sinks.
On the one hand, the main object of the present application is to provide a steel pipe pile structure of a steel box girder, including:
a steel box girder;
the concrete foundation layer is positioned below the surface layer;
the reinforcing area is positioned below the concrete foundation layer;
and one end of the steel pipe pile is positioned below the steel box girder and connected with the steel box girder, and the other end of the steel pipe pile is inserted into the ground surface layer and penetrates through the concrete foundation layer and the reinforcing area.
Preferably, the steel pipe pile further comprises a plurality of stiffening plates, and the stiffening plates are distributed around the steel pipe pile on the ground surface layer.
Preferably, the concrete foundation slab further comprises connecting steel bars, the connecting steel bars are located below the stiffening plate and are in a shape of Contraband, the connecting steel bars are connected with the lower surface of the stiffening plate, and two ends of the connecting steel bars penetrate into the concrete foundation layer.
Preferably, the connecting steel bars and the stiffening plates are fixed by welding.
Preferably, both ends of the connecting reinforcement are provided with hooks extending to the concrete foundation layer.
Preferably, the reinforcing area is made of brick slag or broken stone, and the thickness of the reinforcing area is 70-90cm, more preferably 60cm, and the reinforcing area can play a role in stabilizing foundation soil.
Preferably, the concrete foundation layer has a thickness of 10-30cm, more preferably 20cm, and is made of C20 concrete.
Preferably, the stiffening plates are triangular stiffening plates, and the 4 stiffening plates are uniformly distributed around the steel pipe pile.
On the other hand, the application also provides a construction method of the steel pipe pile structure of the steel box girder, which comprises the following steps:
s1, excavating a foundation pit: and (3) excavating soil bodies within a certain range around the steel pipe pile by matching small machinery with manual work, wherein the depth is 0.5-1.5m, and removing original ground sludge and impurities. Preferably, the depth of the excavation is 1 m;
s2, replacement reinforced area: brick slag or broken stone is arranged in a range of 70-90cm away from the original ground, so that the effect of stabilizing the foundation soil body is achieved;
s3, pouring a concrete foundation layer and pre-buried connecting steel bars: pouring a layer of C20 concrete with the thickness of 10-30cm on the brick slag or the broken stones to be replaced, and embedding an embedded plate with the size matched with that of the connecting plate of the steel pipe pile at the position close to the steel pipe pile to ensure the accurate position;
s4, welding the stiffening plate: and when the strength of the concrete foundation layer meets the requirement, uniformly arranging 4 stiffening plates on the periphery of the steel pipe pile, and tightly welding the stiffening plates with the embedded connecting steel bars.
The beneficial effect of this application is: 4 triangular bearing plates are uniformly distributed and welded on the periphery of the steel pipe pile, the foundation around the steel pipe pile is filled and replaced, concrete is poured, and a pre-embedded plate is arranged at the corresponding position of the concrete foundation and welded with the bearing plates of the steel pipe pile. The structure is simple and feasible, professional equipment such as a special grouting machine for entering a field is not needed, and construction cost is low. The method is not influenced by geological porosity and the like, and has good applicability. When the foundation strength meets the requirement, the triangular bearing plates are welded at the corresponding positions, and then the steel pipe pile can be stressed to prevent the steel pipe pile from continuously sinking.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic view of an overall structure of a steel pipe pile structure of a steel box girder;
fig. 2 is a partial schematic view of a steel pipe pile structure of a steel box girder.
1-steel box girder; 2, connecting steel bars; 3, a stiffening plate; 4-concrete foundation layer; 5-a reinforcement zone; 6, steel pipe pile.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1-2, the present application provides a steel pipe pile structure of a steel box girder, including:
a steel box girder 1;
the concrete foundation layer 4 is positioned below the surface layer;
a reinforcement area 5 located below the concrete foundation layer 4;
and one end of the steel pipe pile 6 is positioned below the steel box girder 1 and connected with the steel box girder 1, and the other end of the steel pipe pile is inserted into the ground surface layer and penetrates through the concrete foundation layer 4 and the reinforcing area 5.
In this embodiment, the steel pipe pile further comprises a plurality of stiffening plates 3, and the stiffening plates 3 are distributed around the steel pipe pile 6 on the surface layer.
In this embodiment, the concrete foundation slab further comprises connecting steel bars 2, the connecting steel bars 2 are located below the stiffening plates 3, the connecting steel bars 2 are shaped like Contraband, the connecting steel bars 2 are connected with the lower surfaces of the stiffening plates 3, and two ends of the connecting steel bars 2 penetrate into the concrete foundation layer 4.
In this embodiment, the connecting steel bar 2 and the stiffening plate 3 are fixed by welding.
In this embodiment, both ends of the connecting reinforcement 2 are provided with hooks extending to the concrete foundation 4.
In the present embodiment, the reinforced area 5 is made of brick slag or gravel, and the thickness of the reinforced area 5 is 70-90cm, and more preferably 60cm, which can stabilize the foundation soil.
In this embodiment, the concrete foundation layer 4 has a thickness of 10-30cm, more preferably 20cm, and is made of C20 concrete.
In this embodiment, the stiffening plates 3 are triangular stiffening plates, and the stiffening plates are 4 stiffening plates uniformly distributed around the steel pipe pile 6.
On the other hand, the application also provides a construction method of the steel pipe pile structure of the steel box girder, which comprises the following steps:
s1, excavating a foundation pit: and (3) excavating soil bodies within a certain range around the steel pipe pile by matching small machinery with manual work, wherein the depth is 0.5-1.5m, and removing original ground sludge and impurities. Preferably, the depth of the excavation is 1 m;
s2, replacement reinforced area: brick slag or broken stone is arranged in a range of 70-90cm away from the original ground, so that the effect of stabilizing the foundation soil body is achieved;
s3, pouring a concrete foundation layer and pre-buried connecting steel bars: pouring a layer of C20 concrete with the thickness of 10-30cm on the brick slag or the broken stones to be replaced, and embedding an embedded plate with the size matched with that of the connecting plate of the steel pipe pile at the position close to the steel pipe pile to ensure the accurate position;
s4, welding the stiffening plate: and when the strength of the concrete foundation layer meets the requirement, uniformly arranging 4 stiffening plates on the periphery of the steel pipe pile, and tightly welding the stiffening plates with the embedded connecting steel bars.
The method makes full use of the principle of the open caisson foundation, and can be quickly connected with the concrete foundation layer by welding the stiffening plates after the strength of the foundation meets the requirement, so that the steel pipe piles are prevented from continuously sinking, and the installation accuracy of the steel box girder is ensured.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. The utility model provides a steel-pipe pile structure of steel box girder which characterized in that includes:
a steel box girder;
the concrete foundation layer is positioned below the surface layer;
the reinforcing area is positioned below the concrete foundation layer;
and one end of the steel pipe pile is positioned below the steel box girder and connected with the steel box girder, and the other end of the steel pipe pile is inserted into the ground surface layer and penetrates through the concrete foundation layer and the reinforcing area.
2. The steel pipe pile structure of a steel box girder according to claim 1, further comprising a plurality of stiffening plates, wherein the stiffening plates are distributed around the steel pipe pile on the surface layer.
3. The steel pipe pile structure of a steel box girder according to claim 1, further comprising a connection bar, wherein the connection bar is positioned under the stiffener, the connection bar is shaped like Contraband, the connection bar is connected to a lower surface of the stiffener, and both ends of the connection bar penetrate into the concrete foundation layer.
4. The steel pipe pile structure of a steel box girder according to claim 3, wherein the connection reinforcing bars and the stiffener plate are fixed by welding.
5. The steel-pipe pile structure of a steel box girder according to claim 3, wherein both ends of the connection reinforcing bars are provided with hooks extending to the concrete foundation layer.
6. The steel pipe pile structure of a steel box girder according to claim 1, wherein the reinforcement region is formed of brick slag or crushed stone, and the thickness of the reinforcement region is 70-90 cm.
7. The steel pipe pile structure of a steel box girder according to claim 1, wherein the concrete foundation layer has a thickness of 10-30cm and is made of C20 concrete.
8. The steel pipe pile structure of a steel box girder according to claim 1, wherein the stiffener is a triangular stiffener, and the number of the stiffener is 4, and the stiffener is uniformly distributed around the steel pipe pile.
9. A construction method of a steel pipe pile structure of a steel box girder comprises the following steps:
s1, excavating a foundation pit: and (3) excavating soil bodies within a certain range around the steel pipe pile by matching small machinery with manual work, wherein the depth is 0.5-1.5m, and removing original ground sludge and impurities. Preferably, the depth of the excavation is 1 m;
s2, replacement reinforced area: brick slag or broken stone is arranged in a range of 70-90cm away from the original ground, so that the effect of stabilizing the foundation soil body is achieved;
s3, pouring a concrete foundation layer and pre-buried connecting steel bars: pouring a layer of C20 concrete with the thickness of 10-30cm on the brick slag or the broken stones to be replaced, and embedding an embedded plate with the size matched with that of the connecting plate of the steel pipe pile at the position close to the steel pipe pile to ensure the accurate position;
s4, welding the stiffening plate: and when the strength of the concrete foundation layer meets the requirement, uniformly arranging 4 stiffening plates on the periphery of the steel pipe pile, and tightly welding the stiffening plates with the embedded connecting steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181567.3A CN112814008A (en) | 2021-02-09 | 2021-02-09 | Steel pipe pile structure of steel box girder and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181567.3A CN112814008A (en) | 2021-02-09 | 2021-02-09 | Steel pipe pile structure of steel box girder and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112814008A true CN112814008A (en) | 2021-05-18 |
Family
ID=75865152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110181567.3A Pending CN112814008A (en) | 2021-02-09 | 2021-02-09 | Steel pipe pile structure of steel box girder and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112814008A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07150554A (en) * | 1993-11-25 | 1995-06-13 | Shimizu Corp | Steel pipe pile and method for installing it |
| JP2004244955A (en) * | 2003-02-14 | 2004-09-02 | Shimizu Corp | Cast-in-place concrete-filled steel pipe pile, construction method for cast-in-place concrete-filled steel pipe pile and foundation structure of structure |
| CN204059356U (en) * | 2014-10-15 | 2014-12-31 | 葛洲坝集团第五工程有限公司 | Extended chemotherapy braced structures in temporary steel trestle water |
| CN104420486A (en) * | 2013-08-21 | 2015-03-18 | 贵阳铝镁设计研究院有限公司 | Method and structure for adding steel pipe pile at bottom of extended shallow foundation |
| CN105569043A (en) * | 2014-10-15 | 2016-05-11 | 葛洲坝集团第五工程有限公司 | Underwater foundation spreading supporting structure for temporary steel trestle |
| CN206887984U (en) * | 2017-03-24 | 2018-01-16 | 华夏聚光（内蒙古）光伏电力有限公司 | A kind of photovoltaic generation support steel bar concrete reinforcement steel pipe pile foundation |
| CN107700521A (en) * | 2017-10-27 | 2018-02-16 | 西安建筑科技大学 | One kind is built（Structure）Build thing foundation stabilization and underpin pier and its construction method |
| CN109457868A (en) * | 2018-07-10 | 2019-03-12 | 国网浙江省电力有限公司丽水供电公司 | A kind of steel tube concrete column feet node and its construction method |
| CN109881659A (en) * | 2019-03-27 | 2019-06-14 | 东南大学 | A kind of offshore wind farm steel pipe pile foundation foundation reinforcement method with protection against erosion ability |
-
2021
- 2021-02-09 CN CN202110181567.3A patent/CN112814008A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07150554A (en) * | 1993-11-25 | 1995-06-13 | Shimizu Corp | Steel pipe pile and method for installing it |
| JP2004244955A (en) * | 2003-02-14 | 2004-09-02 | Shimizu Corp | Cast-in-place concrete-filled steel pipe pile, construction method for cast-in-place concrete-filled steel pipe pile and foundation structure of structure |
| CN104420486A (en) * | 2013-08-21 | 2015-03-18 | 贵阳铝镁设计研究院有限公司 | Method and structure for adding steel pipe pile at bottom of extended shallow foundation |
| CN204059356U (en) * | 2014-10-15 | 2014-12-31 | 葛洲坝集团第五工程有限公司 | Extended chemotherapy braced structures in temporary steel trestle water |
| CN105569043A (en) * | 2014-10-15 | 2016-05-11 | 葛洲坝集团第五工程有限公司 | Underwater foundation spreading supporting structure for temporary steel trestle |
| CN206887984U (en) * | 2017-03-24 | 2018-01-16 | 华夏聚光（内蒙古）光伏电力有限公司 | A kind of photovoltaic generation support steel bar concrete reinforcement steel pipe pile foundation |
| CN107700521A (en) * | 2017-10-27 | 2018-02-16 | 西安建筑科技大学 | One kind is built（Structure）Build thing foundation stabilization and underpin pier and its construction method |
| CN109457868A (en) * | 2018-07-10 | 2019-03-12 | 国网浙江省电力有限公司丽水供电公司 | A kind of steel tube concrete column feet node and its construction method |
| CN109881659A (en) * | 2019-03-27 | 2019-06-14 | 东南大学 | A kind of offshore wind farm steel pipe pile foundation foundation reinforcement method with protection against erosion ability |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102444142B (en) | Pile group column replacement expanded basement and construction method of same | |
| CN108193642B (en) | Revetment reinforcing facility and construction method thereof | |
| CN106088127A (en) | Open caisson construction method | |
| CN107447778A (en) | The heightening and consolidation structure and method of a kind of in-service reinforced concrete retaining wall | |
| CN102430277B (en) | Coarse grid sunk well for physically processing waste water and construction method thereof | |
| CN107489164A (en) | The heightening and consolidation structure and method of a kind of in-service reinforced concrete retaining wall | |
| CN112064751A (en) | Deep groove construction method for drainage pipeline | |
| RU2392387C2 (en) | Device and method for reinforcement of mast base | |
| CN207331740U (en) | A kind of heightening and consolidation structure of in-service reinforced concrete retaining wall | |
| CN109706952A (en) | Large-scale well-sinking construction method | |
| CN207331739U (en) | A kind of heightening and consolidation structure of in-service reinforced concrete retaining wall | |
| CN104895111B (en) | The construction method of integrated pipe canal in weak soil ground | |
| CN108729927B (en) | A kind of existing tunnel reorganization and expansion is the mid-board construction method of multiple-arch tunnel | |
| CN109826224A (en) | A kind of sinking well protection wall digging foundation and its construction method for desert region iron tower of power transmission line | |
| CN212001226U (en) | Backfill miscellaneous soil composite foundation structure | |
| CN108457289A (en) | A kind of open caisson construction method of complex condition | |
| CN105040707A (en) | Combined densely-arrayed pile deep foundation pit supporting and enclosure structure used as basement external wall | |
| CN218813764U (en) | Stress-maintaining type faces combination continuous pile wall supporting construction forever | |
| CN215518843U (en) | Steel-pipe pile structure of steel case roof beam | |
| CN109763513B (en) | Construction method of anchor cable lattice and modified soil retaining wall composite supporting and retaining structure | |
| CN109056804B (en) | Comprehensive pipe rack foundation pit supporting structure and implementation method thereof | |
| CN115506382A (en) | Construction method for pile plate wall of island building platform | |
| CN112814008A (en) | Steel pipe pile structure of steel box girder and construction method | |
| CN107964977A (en) | The composite foundation and its construction method of a kind of karst landform | |
| CN106988337B (en) | It is a kind of for reducing the reinforcement means of bar shaped shallow foundation house differential settlement |
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 |