阅读说明：本技术 外置钢轨式轻型拦污漂端部结构及施工方法 (External steel rail type light trash-blocking float end structure and construction method ) 是由 崔颖 张家成 周剑 苗永盛 程慧平 魏鹏帅 王立军 尤治伟 陈杨龙 魏小红 于 2020-05-22 设计创作，主要内容包括：本发明涉及一种外置钢轨式轻型拦污漂端部结构及施工方法,该拦污漂端部结构,包括塔体混凝土、拦污漂滑动结构、上部结构混凝土、塔侧回填混凝土和外置钢轨,将塔侧回填混凝土作为拦污漂端部结构的下部混凝土,减少了混凝土的浇筑量,节省了拦污漂端部结构独立施工工期,并可与塔体混凝土浇筑共享同一施工平台,降低了施工成本；上部结构混凝土设在塔体混凝土侧面和塔侧回填混凝土上部,避免了开挖爆破对进水塔混凝土施工造成的结构及工期等影响,以及独立搭设施工平台的高额成本；采用外置钢轨解决了传统内置式导槽施工难度大,施工工期长,施工成本高,不易检修等问题,降低了施工难度与工程造价。(The invention relates to an external steel rail type light trash-floating end structure and a construction method, wherein the trash-floating end structure comprises tower body concrete, a trash-floating sliding structure, upper structure concrete, tower side backfill concrete and an external steel rail, the tower side backfill concrete is used as lower concrete of the trash-floating end structure, the pouring amount of the concrete is reduced, the independent construction period of the trash-floating end structure is saved, the trash-floating end structure and the tower body concrete can be poured to share the same construction platform, and the construction cost is reduced; the upper structure concrete is arranged on the side surface of the tower body concrete and the upper part of the tower side backfill concrete, so that the influences of excavation blasting on the structure, the construction period and the like of the water inlet tower concrete construction are avoided, and the high cost of independently building a construction platform is avoided; the external steel rail is adopted to solve the problems of large construction difficulty, long construction period, high construction cost, difficulty in maintenance and the like of the traditional built-in guide groove, and the construction difficulty and the construction cost are reduced.)

1. The utility model provides a light-duty trash floating end structure that blocks of external rail formula, includes tower body concrete (5) and blocks that the trash floats sliding construction (7), its characterized in that: also comprises upper structure concrete (1), tower side backfill concrete (2) and an external steel rail (3),

the upper structure concrete (1) and the tower side backfill concrete (2) are arranged on the side surface of the tower body concrete (5), the upper structure concrete (1) is positioned on the upper part of the tower side backfill concrete (2), and the tower upper structure concrete (1) is anchored with the tower body concrete (5) and the tower side backfill concrete (2);

concrete (2) are backfilled to tower side and superstructure concrete (1) upstream face is equipped with steel anchor slab (8), the fixed rail brackets (4) that are equipped with on steel anchor slab (8), the fixed external rail (3) that are equipped with on rail brackets (4), external rail (3) set up and backfill concrete (2) and superstructure concrete (1) facade at tower side, block dirty floating sliding structure (7) and adopt nested sliding connection with external rail (3).

2. The outboard steel rail type light trash floating end structure of claim 1, wherein: the upper structure concrete (1) is anchored with the tower body concrete (5) and the tower side backfill concrete (2) through the dowel bars (6).

3. The outboard steel rail type light trash floating end structure of claim 1, wherein: the steel rail bracket (4) and the steel anchor plate (8) as well as the external steel rail (3) and the steel rail bracket (4) are fixed by welding.

4. The outboard steel rail type light trash floating end structure of claim 1, wherein: the external steel rail (3) is formed by splicing a plurality of sections of standard hollow round steel.

5. The outboard steel rail type light trash floating end structure according to claim 4, wherein: each standard section of steel rail is welded and fixed with at least two steel rail brackets (4).

6. The outboard steel rail type light trash floating end structure of claim 5, wherein: the head and tail steel rail brackets (4) and the corresponding sections of steel rails are subjected to full wrapping welding, and the middle steel rail bracket (4) and the corresponding sections of steel rails are welded in an arc of 1/4-1/3.

7. The outboard steel rail type light trash floating end structure of claim 1, wherein: the steel anchor plate (8) is arranged at the positions of the upstream face trash-blocking floating guide groove of the tower side backfill concrete (2) and the upper structure concrete (1).

8. A construction method of an external steel rail type light trash-floating-end-part structure comprises the following steps:

a. after the tower side backfilling concrete (2) is poured to a designed elevation, continuously pouring the upper structure concrete (1) on the side surface of the tower body concrete (5) and the upper part of the tower side backfilling concrete (2), and performing roughening and embedded inserting rib (6) treatment on the side surface of the tower body concrete (5) and the upper surface of the tower side backfilling concrete (2) when pouring the upper structure concrete (1) so as to anchor the upper structure concrete (1);

b. the upper structure concrete (1) is designed and constructed according to a gravity dam type body, the basic section of the upper structure concrete is triangular, and the upstream surface of the upper structure concrete is designed into a vertical section;

c. in the construction process of backfilling concrete (2) on the tower side and upper structure concrete (1), embedding a steel anchor plate (8) at the design position of a dirt blocking float guide groove on the upstream face of the tower, and effectively welding a steel rail bracket (4) and the steel anchor plate (8) after a vertical face template is removed;

d. welding and fixing the external steel rails (3) and the steel rail brackets (4), wherein the external steel rails (3) are assembled by adopting hollow round steel bars in standard sections, each steel rail in the standard sections is welded and fixed with at least two steel rail brackets (4), the head and tail steel rail brackets (4) are welded with the corresponding steel rail sections in a full wrapping way, the middle steel rail brackets (4) are welded with circular arcs 1/4-1/3 of the corresponding steel rails, and the external steel rails (3) and the steel rail brackets (4) adopt reliable anticorrosion measures;

e. the trash floating block sliding structure (7) is connected with the external steel rail (3) in a nested sliding mode and can automatically lift along with the rise and fall of water level.

Technical Field

The invention relates to the technical field of water diversion of hydraulic and hydroelectric engineering, in particular to an external steel rail type light trash floating end structure and a construction method.

Background

In water conservancy and hydropower engineering, the trash holding float as a diversion building occupies a very important position, and particularly, the end structure form of the trash holding float in a diversion type hydropower station has a control influence on the whole construction period and the whole construction cost of the hydropower station.

The traditional construction of the end structure of the high-slope trash floating block needs slope excavation and support, while excavation blasting easily causes certain influence on a water inlet tower structure and the construction period of the water inlet tower structure, the traditional end structure of the trash floating block is generally vertically arranged, an independent construction platform needs to be erected after excavation is completed, and a large amount of concrete needs to be backfilled along the slope surface of a mountain, so that the construction measure cost and the concrete pouring cost are high, the construction period is long, and the delay of the power generation period is easily caused; partial engineering blocks dirty floating end structure and sets up to the inclined plane in order to reduce backfill concrete volume, and this kind of mode has provided higher requirement to blocking dirty floating end flotation tank hinged structure design, and the common emergence is blocked dirty floating end flotation tank because the too big circumstances of being stuck of resistance in the engineering is used, and the practicality is not high.

Disclosure of Invention

In order to solve the problems, the invention provides an external steel rail type light-weight trash-floating end structure and a construction method, which are suitable for the design of a concrete structure at the trash-floating end of a water inlet under a complex condition, short in construction period and convenient to construct and overhaul.

The technical scheme adopted by the invention is as follows: the utility model provides a light-duty trash floating end structure that blocks of external rail formula, includes tower body concrete and blocks that the trash floats sliding construction, its characterized in that: also comprises upper structure concrete, tower side backfill concrete and an external steel rail,

the upper structure concrete and the tower side backfilling concrete are arranged on the side surface of the tower body concrete, the upper structure concrete is positioned on the upper part of the tower side backfilling concrete, and the tower upper structure concrete is anchored with the tower body concrete and the tower side backfilling concrete;

the tower side backfilling concrete and the upper structure concrete upstream face are provided with steel anchor plates, steel rail supports are fixedly arranged on the steel anchor plates, external steel rails are fixedly arranged on the steel rail supports, the external steel rails are arranged on the tower side backfilling concrete and the upper structure concrete outer vertical face, and the trash floating blocking sliding structure and the external steel rails are connected in a nested sliding mode.

Preferably, the superstructure concrete is anchored with the tower body concrete and the tower side backfill concrete by means of the dowel bars.

Preferably, the steel rail bracket and the steel anchor plate, and the external steel rail and the steel rail bracket are fixed by welding.

Preferably, the external steel rail is formed by splicing a plurality of sections of standard hollow round steel.

Furthermore, each standard section of steel rail is welded and fixed with at least two steel rail brackets.

Furthermore, the head and tail steel rail brackets and the corresponding sections of steel rails are subjected to full wrapping welding, and the middle steel rail brackets and the corresponding sections of steel rails are welded by adopting 1/4-1/3 circular arcs.

Preferably, the steel anchor plate is arranged at the position of the tower side backfill concrete and the upper structure concrete upstream face dirt blocking floating guide groove.

A construction method of an external steel rail type light trash-floating-end-part structure comprises the following steps:

a. after the tower side backfilling concrete is poured to a designed elevation, continuously pouring upper structure concrete on the side surface of the tower body concrete and the upper part of the tower side backfilling concrete, and performing roughening and embedded joint bar treatment on the side surface of the tower body concrete and the upper surface of the tower side backfilling concrete when the upper structure concrete is poured so as to anchor the upper structure concrete;

b. the upper structure concrete is designed and constructed according to the 'gravity dam type' body type, the basic section of the upper structure concrete is triangular, and the upstream surface of the upper structure concrete is designed into a vertical section;

c. in the construction process of backfilling concrete on the tower side and upper structure concrete, a steel anchor plate is pre-embedded at the design position of a water surface dirt blocking float guide groove, and a steel rail bracket is effectively welded with the steel anchor plate after a vertical face template is removed;

d. welding and fixing external steel rails and steel rail brackets, wherein the external steel rails are assembled by adopting hollow round steel in standard sections, each steel rail in the standard sections is welded and fixed with at least two steel rail brackets, the head and tail steel rail brackets are welded with corresponding sections of steel rails in a full wrapping manner, the middle steel rail bracket is welded with 1/4-1/3 circular arcs of the corresponding sections of steel rails, and the external steel rails and the steel rail brackets adopt reliable anti-corrosion measures;

e. the trash-holding float sliding structure is connected with the external steel rail in a nested sliding mode and can automatically lift along with the fluctuation of water level.

The beneficial effects obtained by the invention are as follows:

(1) the tower side backfill concrete is used as the lower concrete of the end structure of the dirt blocking float, so that the pouring amount of the concrete is reduced, the independent construction period of the end structure of the dirt blocking float is saved, the same construction platform can be shared with the tower body concrete pouring, and the construction cost is reduced;

(2) the upper structure concrete is arranged on the side surface of the tower body concrete and the upper part of the tower side backfill concrete, so that construction projects such as side slope excavation and supporting are omitted compared with a scheme that the dirt blocking float end part structures are arranged on the side slopes on the two sides of the upstream of the water inlet tower, the influences of excavation blasting on the structure, the construction period and the like of the water inlet tower concrete construction are avoided, and the high cost of independently erecting a construction platform is also avoided;

(3) the upper structure of the end part of the trash floating block is anchored by the dowel bars, the concrete of the tower body and the backfilling concrete at the side of the tower, and a light gravity dam type concrete structure is adopted on the basis of ensuring the stable structure, so that the problem in the process of pouring large-volume concrete is reduced, and the technical economy is better;

(4) the traditional dirt blocking float end structure adopts a built-in pulley or slide rail guide groove mode, the manufacturing and installation processes such as splicing of the internal and external corners of the template and reservation of dowel holes are complex, and original concrete needs to be cut and sawed or an external guide groove needs to be poured when the poured concrete is reformed and upgraded according to the dirt blocking float end structure; the invention adopts the scheme of the external steel rail to solve the problems of high construction difficulty, long construction period, high construction cost, difficult maintenance and the like of the traditional built-in guide groove, and reduces the construction difficulty and the construction cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

reference numerals: 1. superstructure concrete; 2. backfilling concrete at the tower side; 3. externally arranging steel rails; 4. a rail support; 5. concrete for the tower body; 6. inserting ribs; 7. a sliding structure of the trash-blocking float; 8. a steel anchor plate.

Detailed Description

The invention will be further described with reference to the following drawings and specific embodiments.

As shown in fig. 1-3, the external steel rail type light trash floating end structure comprises a tower body concrete 5, a trash floating sliding structure 7, an upper structure concrete 1, a tower side backfilling concrete 2 and an external steel rail 3, wherein the upper structure concrete 1 and the tower side backfilling concrete 2 are both arranged on the side surface of the tower body concrete 5, the upper structure concrete 1 is positioned on the upper portion of the tower side backfilling concrete 2, the tower side backfilling concrete 2 is used as lower concrete of the trash floating end structure, the pouring amount of concrete is reduced, the independent construction period of the trash floating end structure is saved, the trash floating end structure and the tower body concrete 5 can be poured to share the same construction platform, and the construction cost is reduced. And superstructure concrete 1 establishes 2 upper portions at tower body concrete 5 side and tower side backfill concrete, and the scheme of arranging on the side slope of the tower upper reaches both sides trash-blocking floats tip structure has saved construction items such as side slope excavation, support, has avoided the influence such as structure and time limit that excavation blasting caused to the concrete construction of the tower of intaking to and the high cost of independently setting up construction platform.

In the embodiment, the upper structure concrete 1, the tower body concrete 5 and the tower side backfill concrete 2 are anchored through the dowel bars 6, a light gravity dam type concrete structure is adopted on the basis of ensuring the stable structure, the difficult problem in the process of pouring large-volume concrete is reduced, and the technical economy is better.

In the construction process of backfilling concrete 2 and superstructure concrete 1 at the tower side, pre-burying a steel anchor plate 8 at the design position of a water-facing surface dirt blocking float guide groove, effectively welding a steel rail support 4 and the steel anchor plate 8 after a vertical face template is removed, fixedly arranging an external steel rail 3 on the steel rail support 4, arranging the external steel rail 3 at the outer vertical face of the backfilling concrete 2 and superstructure concrete 1 at the tower side, and adopting nested sliding connection of a dirt blocking float sliding structure 7 and the external steel rail 3, so that the automatic lifting along with the water level fluctuation can be realized.

External rail 3 adopts standard section cavity round steel to assemble, every standard section rail carries out welded fastening with two at least rail brackets 4, head and tail rail bracket 4 need carry out the parcel welding entirely with corresponding section rail, middle rail bracket 4 welds with corresponding section rail 1/4 ~ 1/3 circular arcs, rail bracket 4 welds with block dirty pre-buried steel anchor plate 8 that floats tip concrete, block dirty floating sliding structure 7 and adopt nested sliding connection with external rail 3, external rail 3 and rail bracket 4 all adopt reliable anti-corrosion measures, can reduce and block dirty floating lifting friction power, be convenient for overhaul afterwards, and the operation cost is reduced.

The invention relates to a construction method of an external steel rail type light trash-floating end structure, which comprises the following steps:

a. after the tower side backfilling concrete 2 is poured to a designed elevation, continuously pouring the upper structure concrete 1 on the side surface of the tower body concrete 5 and the upper part of the tower side backfilling concrete 2, and performing roughening and embedded inserting rib 6 treatment on the side surface of the tower body concrete 5 and the upper surface of the tower side backfilling concrete 2 when the upper structure concrete 1 is poured so as to anchor the upper structure concrete 1;

b. the upper structure concrete 1 is designed and constructed according to the 'gravity dam type' body type, the basic section of the upper structure concrete is triangular, and the upstream surface of the upper structure concrete is designed into a vertical section; the upper structure concrete (01) and the tower body concrete 5 can be synchronously poured and lifted;

c. in the construction process of the tower side backfill concrete 2 and the upper structure concrete 1, a steel anchor plate 8 is pre-embedded at the design position of the upstream face dirt blocking float guide groove, and the steel rail bracket 4 and the steel anchor plate 8 are effectively welded after the vertical face template is removed;

d. the external steel rails 3 and the steel rail supports 4 are welded and fixed, wherein the external steel rails 3 are assembled by adopting hollow round steel in standard sections, each standard section of steel rail is welded and fixed with at least two steel rail supports 4, the head and tail steel rail supports 4 and the corresponding section of steel rail are welded in a full wrapping way, the middle steel rail support 4 and the corresponding section of steel rail are welded in circular arcs of 1/4-1/3, and the external steel rails 3 and the steel rail supports 4 adopt reliable anti-corrosion measures;

e. the trash-blocking float sliding structure 7 is connected with the external steel rail 3 in a nested sliding mode and can automatically lift along with water level fluctuation.

The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.