CN202578717U - Four-direction connection box for arch frame - Google Patents
Four-direction connection box for arch frame Download PDFInfo
- Publication number
- CN202578717U CN202578717U CN 201220163370 CN201220163370U CN202578717U CN 202578717 U CN202578717 U CN 202578717U CN 201220163370 CN201220163370 CN 201220163370 CN 201220163370 U CN201220163370 U CN 201220163370U CN 202578717 U CN202578717 U CN 202578717U
- Authority
- CN
- China
- Prior art keywords
- bow member
- junction plate
- connection plate
- preliminary bracing
- arch frame
- 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.)
- Expired - Fee Related
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model belongs to the technical field of tunnel construction, and provides a four-direction connection box for an arch frame. The four-direction connection box comprises two cambered plates (12) and four connection plates, wherein the four connection plates are a connection plate I (8) connected with an outer layer preliminary supporting arch frame, a connection plate II (9) connected with a temporary steel support and a connection plate III (10) and a connection plate IV (11) which are connected with an inner layer preliminary supporting arch frame; the connection plate I (8) and the connection plate II (9) are positioned on the inner sides and the outer sides of the two cambered plates (12); and the connection plate III (10) and the connection plate IV (11) are positioned at the upper ends and the lower ends of the two cambered plates. Under the condition that a stress system consisting of the outer layer preliminary supporting arch frame and the temporary steel support is not damaged, the inner layer preliminary supporting arch frame is built; and the four-direction connection box has the characteristics of high safety and convenience in operation.
Description
Technical field
The utility model belongs to the tunnel construction technology field, relates generally to a kind of bow member four-way connecting box.
Background technology
At present, the tunnel preliminary bracing is mostly two-layer or multilayer bow member+sprayed mortar structure is formed, and in the tunnel excavation process, is provided with temporary steel support; How to guarantee that preliminary bracing bow member and smooth connection between the temporary steel support are the key factors of safety for tunnel engineering.Traditional connected mode is to be connected with temporary steel support immediately after outer preliminary bracing bow member sets up completion; When setting up internal layer preliminary bracing bow member, earlier temporary steel support is separated with outer preliminary bracing bow member, treat again temporary steel support and internal layer preliminary bracing bow member to be linked together after internal layer preliminary bracing bow member has set up.Traditional method bring great hidden danger to safety for tunnel engineering, and efficiency of construction is lower owing to will remove temporary steel support earlier before setting up internal layer preliminary bracing bow member.
The utility model content
In order to overcome the deficiency of prior art middle arch rack connected mode, the purpose of the utility model is to propose a kind of bow member four-way connecting box.
The utility model adopts following technical scheme for accomplishing the foregoing invention task:
A kind of bow member four-way connecting box, described bow member four-way connecting box includes two arcs and four junction plates; Described four junction plates are respectively: in order to the junction plate I that is connected with outer preliminary bracing bow member, junction plate II and junction plate III, the junction plate IV in order to be connected with internal layer preliminary bracing bow member in order to be connected with temporary steel support; Described junction plate I, junction plate II are positioned at the inside and outside both sides of two arcs, and described junction plate III, junction plate IV are positioned at the two ends up and down of two arcs.
The use of described bow member four-way connecting box is: after the installation of outer preliminary bracing bow member, bow member four-way connecting box is connected one with outer preliminary bracing bow member, again bow member four-way connecting box is connected one with temporary steel support; When internal layer preliminary bracing bow member is installed, directly internal layer preliminary bracing bow member is connected with bow member four-way connecting box and get final product.
A kind of bow member four-way connecting box that the utility model proposes; Overcome the deficiency of prior art middle arch rack connected mode; Under the situation of not destroying outer preliminary bracing bow member and the formed stress system of temporary steel support; Carry out setting up of internal layer preliminary bracing bow member, have security performance height, convenience operation.
Description of drawings
Fig. 1 is the user mode figure of the utility model.
Among the figure: 1, outer preliminary bracing bow member, 2, temporary steel support, 3, bow member four-way connecting box; 4, internal layer preliminary bracing bow member, 5, outer preliminary bracing bow member junction plate, 6, internal layer preliminary bracing bow member junction plate; 7, temporary steel support junction plate, 8, the junction plate I, 9, the junction plate II; 10, junction plate III, 11, the junction plate IV, 12, arc.
The specific embodiment
In conjunction with accompanying drawing and specific embodiment the utility model is explained;
As shown in Figure 1, a kind of bow member four-way connecting box, described bow member four-way connecting box is arranged between outer preliminary bracing bow member 1 and the temporary steel support 2; Include two arcs 12 and four junction plates; Described four junction plates are respectively: in order to the junction plate I 8 that is connected with outer preliminary bracing bow member 1, junction plate II 9 and junction plate III 10, the junction plate IV 11 in order to be connected with internal layer preliminary bracing bow member 4 in order to be connected with temporary steel support 2; Described junction plate I 8, junction plate II 9 are positioned at the inside and outside both sides of two arcs 12, and described junction plate III 10, junction plate IV 11 are positioned at the two ends up and down of two arcs 12.
The utility model in use; After outer preliminary bracing bow member 1 installation; Use high-strength bolt that the junction plate I 8 of bow member four-way connecting box 3 is connected one with outer preliminary bracing bow member junction plate 5, pass through high-strength bolt again the junction plate II 9 of bow member four-way connecting box 3 is connected one with temporary steel support junction plate 7; When internal layer preliminary bracing bow member 4 is installed, through high-strength bolt internal layer preliminary bracing junction plate 6 is connected with junction plate III 10, the junction plate IV 11 of bow member four-way connecting box and to get final product.Under the situation of not removing already installed temporary steel support 2, still can reach the purpose of smooth installation internal layer preliminary bracing bow member 4 like this.
Claims (1)
1. bow member four-way connecting box, it is characterized in that: described bow member four-way connecting box includes two arcs (12) and four junction plates; Described four junction plates are respectively: in order to the junction plate I (8) that is connected with outer preliminary bracing bow member (1), junction plate II (9) and junction plate III (10), the junction plate IV (11) in order to be connected with internal layer preliminary bracing bow member (4) in order to be connected with temporary steel support (2); Described junction plate I (8), junction plate II (9) are positioned at the inside and outside both sides of two arcs (12), and described junction plate III (10), junction plate IV (11) are positioned at the two ends up and down of two arcs (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163370 CN202578717U (en) | 2012-04-18 | 2012-04-18 | Four-direction connection box for arch frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163370 CN202578717U (en) | 2012-04-18 | 2012-04-18 | Four-direction connection box for arch frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578717U true CN202578717U (en) | 2012-12-05 |
Family
ID=47248138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220163370 Expired - Fee Related CN202578717U (en) | 2012-04-18 | 2012-04-18 | Four-direction connection box for arch frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202578717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606174A (en) * | 2012-04-18 | 2012-07-25 | 中铁隧道股份有限公司 | Four-direction connection box for lagging jacks |
-
2012
- 2012-04-18 CN CN 201220163370 patent/CN202578717U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606174A (en) * | 2012-04-18 | 2012-07-25 | 中铁隧道股份有限公司 | Four-direction connection box for lagging jacks |
| CN102606174B (en) * | 2012-04-18 | 2014-07-02 | 中铁隧道股份有限公司 | Four-direction connection box for lagging jacks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20170418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |